[go: up one dir, main page]

WO2011064525A1 - Milieu de filtration comportant une multiplicité de couches de filtration différentes et son utilisation pour tester des milieux de filtration - Google Patents

Milieu de filtration comportant une multiplicité de couches de filtration différentes et son utilisation pour tester des milieux de filtration Download PDF

Info

Publication number
WO2011064525A1
WO2011064525A1 PCT/GB2010/002081 GB2010002081W WO2011064525A1 WO 2011064525 A1 WO2011064525 A1 WO 2011064525A1 GB 2010002081 W GB2010002081 W GB 2010002081W WO 2011064525 A1 WO2011064525 A1 WO 2011064525A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
fluid
obstacle
flow path
filter element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2010/002081
Other languages
English (en)
Inventor
Richard Price
Daniel Whittaker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HYDROTECHNIK UK Ltd
Original Assignee
HYDROTECHNIK UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB0920683.0A external-priority patent/GB0920683D0/en
Application filed by HYDROTECHNIK UK Ltd filed Critical HYDROTECHNIK UK Ltd
Publication of WO2011064525A1 publication Critical patent/WO2011064525A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/055—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported ring shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/904—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding directing the mixture to be filtered on the filtering element in a manner to clean the filter continuously

Definitions

  • the present invention relates to methods and apparatus for fluid filtration.
  • examples of the present invention provide a fluid filter comprising: a filter element serving, in use, to trap particulate material from a fluid flowing along a fluid flow path which passes through the filter element; and an obstacle member positioned upstream of the filter element in the fluid flow path to create an eddy region in the fluid flow path, in which one or more eddies form in the fluid, during use; the filter element being positioned in the eddy region.
  • the eddy region may extend downstream of the obstacle member.
  • the filter element may be positioned downstream of the obstacle member.
  • the filter element may abut the obstacle member.
  • There may be a plurality of filter elements positioned in the eddy region.
  • the or each filter element may be planar.
  • the or each filter element may be a sheet of filter material.
  • the filter may have a plurality of obstacle members and a plurality of filter elements, the obstacle members and filter elements alternating along the fluid flow path.
  • the filter elements may be in abutment with the preceding and following obstacle members.
  • the or each obstacle member may be a planar member having at least one edge in the flow path to cause the formation of eddies.
  • The, or at least one of the edges may be straight.
  • The, or at least one of the edges may include a corner at which two straight portions meet to form a discontinuity. The corner may form a right angle between the straight portions.
  • the or each obstacle member may have a plurality of edges in the flow path, to cause the formation of eddies.
  • the or each obstacle member may be a sheet of impervious material.
  • the or each obstacle member may define at least one aperture having at least one edge in the flow path, to cause the formation of eddies.
  • the or each aperture may be elongate to provide opposed edges which each create an eddy region downstream.
  • the or each aperture may be an elongate slot.
  • the or each obstacle member may define a plurality of slots. The plurality of slots may be oriented to radiate from a common point.
  • the obstacle member may be generally circular, the slots extending radially.
  • the obstacle member may be magnetized.
  • examples of the present invention provide a method of filtering a fluid, in which: a filter element is provided to trap particulate material from a fluid flowing along a fluid flow path which passes through the filter element; and an obstacle member is positioned upstream of the filter element in the fluid flow path to create an eddy region in the fluid flow path, one or more eddies forming in the fluid within the eddy region, during use; and positioning the filter element in the eddy region.
  • the eddy region may extend downstream of the obstacle member.
  • the filter element may be positioned downstream of the obstacle member.
  • the filter element may abut the obstacle member.
  • the or each filter element may be planar.
  • the or each filter element may be a sheet of filter material.
  • the filter may have a plurality of obstacle members and a plurality of filter elements, the obstacle members and filter elements alternating along the fluid flow path.
  • the filter elements may be in abutment with the preceding and following obstacle members.
  • the or each obstacle member may be a planar member having at least one edge in the flow path to cause the formation of eddies.
  • The, or at least one of the edges may be straight.
  • The, or at least one of the edges may include a corner at which two straight portions meet to form a discontinuity. The corner may form a right angle between the straight portions.
  • the or each obstacle member may have a plurality of edges in the flow path, to cause the formation of eddies.
  • the or each obstacle member may be a sheet of impervious material.
  • the or each obstacle member may define at least one aperture having at least one edge in the flow path, to cause the formation of eddies.
  • the or each aperture may be elongate to provide opposed edges which each create an eddy region downstream.
  • the or each aperture may be an elongate slot.
  • the or each obstacle member may define a plurality of slots.
  • the plurality of slots may be oriented to radiate from a common point.
  • the obstacle member may be generally circular, the slots extending radially.
  • the obstacle member may be magnetized.
  • Fig. 3 is a perspective view of an obstacle member of the filter of Fig. 1 ;
  • Fig. 4 illustrates, highly schematically, fluid flow past an edge within the filter of Fig. 1 , enlarged for clarity;
  • Fig. 5 is an exploded view of an alternative fluid filter
  • Fig. 6 is a plan view of an obstacle member of the filter of Fig. 5 and Fig. 6a shows part of Fig. 6 on an enlarged scale;
  • Fig. 7 illustrates, highly schematically, fluid flow through slots in the obstacle member of Fig. 6, enlarged for clarity.
  • Fig. 1 illustrates one example of a fluid filter 10.
  • the filter 10 comprises a plurality of filter elements 12.
  • the elements 12 are illustrated as layers of the filter 10, which is constructed in a manner to be described below.
  • a fluid flow path is indicated by an arrow 14.
  • the path 14 passes sequentially through the elements 12 of the filter 10.
  • Each filter element 12 serves, in use, to trap particulate material from fluid flowing along the fluid flow path, which passes through the filter elements 12.
  • the filter 10 also includes several obstacle members 15, among the filter elements 12. As will be described in more detail below, each obstacle member 15 is positioned upstream of a filter element 12 in the fluid flow path 14 to create an eddy region downstream of the obstacle member 15, in which one or more eddies form in the fluid, during use.
  • the filter element 12 is positioned in the eddy region.
  • the material to be filtered will be called “fluid” and may be liquid or gas.
  • the material which is removed from the fluid will be called the “filtrand”.
  • the clean fluid, after removal of the filtrand, will be called the “filtrate”. Structure of a filter element 12
  • Fig. 2 illustrates one of the filter elements 12.
  • the filter element 12 is in the form of a generally planar disc-like filter structure, having a generally circular periphery
  • the fluid flow path 14 is shown crossing the plane in one direction through the material of the element 12.
  • the periphery 16 could have another shape.
  • the aperture 17 could have another shape.
  • the aperture 17 could be omitted.
  • the element 12 may be one or more layers of filter material such as a woven or non-woven filter cloth.
  • the filter material will have a filter characteristic which represents the ability of the material to remove filtrand from fluid. Filter characteristics may be described in various different ways. In one possibility, the filter characteristic is expressed as a micron rating representing the maximum particle size which can pass through the material. For example, a filter material with a 3 micron rating will block particulate material with a particle size of 3 microns or greater. A micron rating may also be called a "pore size", referring to the size of pore in a perforated structure which allows the same particle size to be passed.
  • the pore size or micron rating may represent a measurement from an equivalent structure providing the same filter characteristic, rather than an actual measurement of a perforation, because many techniques of filtering particles are available in addition to simple perforated sheets, meshes or the like.
  • Filter materials with many different micron ratings are available. For example, materials with micron ratings as high as 100 microns are available for filtering fluids.
  • Typical filter materials for a wide range of common filter tasks may have a thickness in the region of 1 mm or 2 mm, allowing an element to be constructed with as many as 60 filter elements within a relatively small volume.
  • Fig. 3 illustrates an obstacle member 15 included in the filter 10.
  • Each obstacle member 15 is a planar disc made of an impervious material which is dimensionally stable, such as a synthetic plastics material. Other examples are described below.
  • Apertures 18 are formed in the material of the disc 15. The apertures 18 leave a continuous ring 19 around the outer circumference of the disc 15.
  • a central aperture 20 is surrounded by a continuous inner ring 22.
  • the rings 19, 22 are connected by spokes 24.
  • the spokes 24 provide straight edges 25a for the apertures 18, extending generally radially, and meeting arcuate inner and outer edges 25b at corners 25c.
  • the edges 25a, b meet at right angles at the corners 25c.
  • several obstacle member discs 15 are included in the stack of filter elements 12.
  • the outer diameter of the discs 15 is approximately the same as the diameter of the filter elements 12.
  • the diameter of the central aperture 20 is approximately the same as the diameter of the central aperture 17 in the filter elements 12. Accordingly, the discs 15 can be included in the stack of filter elements 12 by placing each disc 15 between two adjacent filter elements 12.
  • an inner cylinder 26 and an outer cylinder 28 resist fluid leaving the filter 10 unless it has passed through the filter elements 12 by flowing through the filter elements 12 in a direction generally parallel with the cylindrical axis of the filter 0.
  • the filter elements 12 are not sealed to the cylinders 26, 28. This reduces the risk of damage to the filter elements 12 if they shrink during use, which some filter media may do.
  • Shrinkage of the filter elements 12 would open gaps between the filter elements 12 and one or both of the cylinders 26, 28, potentially leaving open a path through which fluid can bypass the filter elements 12. Gaps between the filter elements 12 and the cylinders 26, 28 could also arise for other reasons, such as production tolerances, inaccurate cutting, sizing or shaping of the material, or the like.
  • the obstacle members 15 are dimensionally stable and have dimensions chosen to be a close fit to the cylinders 26, 28. Consequently, even if the filter elements 12 leave gaps, the gaps between the obstacle members 15 and the cylinders 26, 28 will remain small. The path of least resistance for fluid flowing through the filter 10, across an obstacle member 15, will remain the paths through the apertures 18.
  • the obstacle members 15 serve as obstacles in the fluid flow path 14 to cause eddies, the formation and significance of which will be described more fully below, after a description of the structure of the filter formed from the filter elements 12 and the obstacle members 15. Structure of the filter
  • the filter 10 is formed from a stack of planar filter elements 12 arranged at generally parallel planes to form a cylindrical structure, as shown. Obstacle members 15 are also included in the stack. The filter elements 12 and the obstacle members 15 are centred on the cylindrical axis of the structure. This results in a fluid flow path leg 14 which passes sequentially through the filter material of each of the elements 12, in turn, and also through the apertures 18 in the obstacle members 15.
  • the inner and outer cylinders 26, 28 (shown partially cut away in Fig. 1 ) prevent fluid leaking from the filter 10 before passing through all of the filter elements 12 and the obstacle members 15.
  • Upper and lower annular rings 30 define inlet and outlet apertures 32 for the filter 10.
  • each of the obstacle members 15 is upstream of a filter element 12 in the fluid flow path 14.
  • the edges 25a, 25b of the apertures 18, particularly the edges 25a of the spokes 24, provide edges which obstruct the fluid flow, and past which the fluid will flow along the path 14.
  • Fig. 4 schematically illustrates the situation, during use. Fluid, indicated generally at 34, is flowing along the flow path 14 from the top of the drawing, as illustrated in Fig. 4, toward the obstacle member 15, of which only the edge 24a of a spoke 24 is visible in Fig. 4. A filter element 12 can be seen, immediately downstream of the spoke 24.
  • each eddy 38 there will be regions of reduced, reversed or zero flow along the flow path 14.
  • the presence of the eddies 38, and the positioning of the filter elements 12 in the eddy region 40 results in an improved performance in the filter 10 in removing particulate material from the filtrand 41 .
  • the reduced, reversed or zero flow allows particles to come out of suspension in the fluid, and to come to rest on the filter element 12, thereby being filtered from the fluid 34.
  • particles which are smaller than the nominal pore size of the filter element 12 will nevertheless be captured by the filter element 12.
  • a filter element 12 with a nominal pore size of 1 micron is found to capture filtrand particulates of a size smaller than 1 micron.
  • a large number of filter elements 12 is provided after each obstacle member 15. It is therefore likely that some of the filter elements 12 will be too far downstream of the preceding obstacle member 15 to be within the eddy region 40, and will therefore filter in a conventional manner.
  • the number of filter elements 12 may be reduced, so that all of the filter elements 12 are positioned in an eddy region 40.
  • each obstacle member 15 is followed by a single filter element 12 in the form of the disc of filter material of the type described above in relation to Fig. 2.
  • filter elements 12 and obstacle members 15 alternate along the fluid flow path 14.
  • Each filter element 12 is in abutment with the preceding and following obstacle member 15.
  • the eddy regions 40 are full of filter material.
  • the obstacle member 15 of the example of Fig. 5 does not have apertures 18 and spokes 24, as illustrated in Fig. 3, but rather has an array of elongate slots 42, illustrated in Fig. 6.
  • Fig. 6a illustrates part of Fig. 6, on an enlarged scale.
  • the slots 42 radiate from a common point 44 (the centre of the circular obstacle member 15). That is, the slots 42 extend radially across the obstacle member 15.
  • the use of slots 42, rather than larger apertures 18, results in the provision of opposed pairs of edges 36 (at opposite sides of the slots 42), which each creates an eddy region 40. In a narrow slot, the whole width of the slot may be in one or other of the eddy regions 40.
  • Fluid indicated generally at 34
  • Fluid is flowing along the flow path 14 from the top of the drawing, as illustrated in Fig. 7, toward the obstacle members 15, of which only the edges 36 of the slots 42 are visible in Fig. 7.
  • a filter element 12 can be seen, immediately downstream of each obstacle member 15.
  • Some of the fluid 34 may flow smoothly through the centre of the slots 42, as illustrated at 46 in Fig. 7. This will depend on the width of the slot 42. However, closer to the edges 36, smooth flow of the fluid 34 will be obstructed by the presence of the edges 36. In particular, some fluid must be deflected to reach the slots 42.
  • a swirling effect is thus caused in the fluid 34, around each edge 36. That is, one or more eddies 38 form in the fluid flow, in an eddy region 40 which extends downstream of each edge 36.
  • Each filter element 12 is positioned in the eddy regions 40 of the preceding obstacle member 15.
  • each eddy 38 there will be regions of reduced, reversed or zero flow along the flow path 14 as noted above. Accordingly, the reduced, reversed or zero flow again allows particles to come out of suspension in the fluid, and to come to rest on the filter elements 12, thereby being filtered from the fluid 34. Again, particles which are smaller than the nominal pore size of the filter element 12 will nevertheless be captured by the filter element 12. Thus, the filtrand 41 has been filtered to a smaller particle size than would be expected from the nominal pore size of the filter elements 12.
  • a single filter element 12 is provided after each obstacle member 15. All of the filter elements 12 will therefore be within the eddy regions 40.
  • the number of filter elements 12 between consecutive obstacle members 15 may be increased, and may be increased sufficiently so that not all of the filter elements 12 are positioned in an eddy region 40.
  • the obstacle member 15 may be made of a synthetic plastics material, as noted above.
  • other materials which are sufficiently rigid to function as described above could be used, such as card or metal.
  • a metal obstacle member could be magnetized to aid in collecting ferrous particles from the fluid.
  • Many variations and modifications can be made to the apparatus described above, without departing from the scope of the present invention. For example, many different shapes, sizes and relative shapes and sizes can be chosen for the various components illustrated in the drawings. We have observed that the effectiveness of the filter process appears to be enhanced by using straight edges on the obstacle members, to create eddy regions. Forming corners at which two straight edges meet, especially if they meet at right angles, has also been observed to be beneficial.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

Selon l'invention, le fluide s'écoule en suivant un trajet fluidique (14) avant de traverser un élément de filtration (12). L'élément de filtration (12) est précédé d'un obstacle (24) qui crée une zone de turbulence (40) dans laquelle l'écoulement du fluide sur le trajet (14) est réduit, inversé ou nul. La performance des éléments de filtration (12) à éliminer les substances particulaires contenues dans le fluide ainsi obtenu s'en trouve améliorée.
PCT/GB2010/002081 2009-11-26 2010-11-12 Milieu de filtration comportant une multiplicité de couches de filtration différentes et son utilisation pour tester des milieux de filtration Ceased WO2011064525A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0920683.0 2009-11-26
GBGB0920683.0A GB0920683D0 (en) 2009-06-05 2009-11-26 Improvements in or relating to methods and apparatus for fluid filtration
GBGB1013194.4A GB201013194D0 (en) 2009-11-26 2010-08-05 Improvements in or relating to methods and apparatus for fluid filtration
GB1013194.4 2010-08-05

Publications (1)

Publication Number Publication Date
WO2011064525A1 true WO2011064525A1 (fr) 2011-06-03

Family

ID=42931812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2010/002081 Ceased WO2011064525A1 (fr) 2009-11-26 2010-11-12 Milieu de filtration comportant une multiplicité de couches de filtration différentes et son utilisation pour tester des milieux de filtration

Country Status (2)

Country Link
GB (1) GB201013194D0 (fr)
WO (1) WO2011064525A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB430375A (en) * 1934-04-04 1935-06-18 Meurice True Wells Filter and pad therefor
US3647084A (en) * 1969-10-17 1972-03-07 William W Nugent & Co Inc Filter
EP0249327A2 (fr) * 1986-05-15 1987-12-16 IMI Marston Limited Filtre
US5536286A (en) * 1994-09-26 1996-07-16 Freeman; Lewis G. Vacuum valve filtering system
WO1999016534A1 (fr) * 1995-11-17 1999-04-08 Donaldson Company, Inc. Construction de matiere filtrante et procede
WO2001019490A1 (fr) * 1999-09-17 2001-03-22 Millipore Corporation Procede et filtre servant au filtrage de boues
WO2010139961A1 (fr) * 2009-06-05 2010-12-09 Hydrotechnik Uk Limited Milieu filtrant comportant une multiplicité de couches filtrantes différentes et son utilisation pour tester des milieux filtrants

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB430375A (en) * 1934-04-04 1935-06-18 Meurice True Wells Filter and pad therefor
US3647084A (en) * 1969-10-17 1972-03-07 William W Nugent & Co Inc Filter
EP0249327A2 (fr) * 1986-05-15 1987-12-16 IMI Marston Limited Filtre
US5536286A (en) * 1994-09-26 1996-07-16 Freeman; Lewis G. Vacuum valve filtering system
WO1999016534A1 (fr) * 1995-11-17 1999-04-08 Donaldson Company, Inc. Construction de matiere filtrante et procede
WO2001019490A1 (fr) * 1999-09-17 2001-03-22 Millipore Corporation Procede et filtre servant au filtrage de boues
WO2010139961A1 (fr) * 2009-06-05 2010-12-09 Hydrotechnik Uk Limited Milieu filtrant comportant une multiplicité de couches filtrantes différentes et son utilisation pour tester des milieux filtrants

Also Published As

Publication number Publication date
GB201013194D0 (en) 2010-09-22

Similar Documents

Publication Publication Date Title
CN114984689B (zh) 槽纹过滤介质、过滤介质包和过滤元件
US4793928A (en) Polymer filtering apparatus
EP1554028B1 (fr) Element de filtre comprenant un milieu de filtration et un support plisse a couches multiples
EP3915663B1 (fr) Ensemble de supports de filtration
JP2004520156A (ja) 正面流入式のフィルタエレメント
US11033838B2 (en) Filter element
JP6626189B2 (ja) 湾曲した入口ガイドを有するフィルタアセンブリ
WO2006049748A1 (fr) Support filtrant cannelé avec limiteur d’écoulement intermédiaire et procédé de fabrication dudit support
US10391437B2 (en) Filter media construction
EP3932520A1 (fr) Appareils et procédés de filtration de fluides
WO2020065431A1 (fr) Système de filtration d'un liquide
JP2017032037A (ja) オイルストレーナ
JP6664417B2 (ja) 高圧耐性フィルタ
JP6365731B2 (ja) フィルタ装置、フィルタ材およびフィルタ材用シート
WO2011064525A1 (fr) Milieu de filtration comportant une multiplicité de couches de filtration différentes et son utilisation pour tester des milieux de filtration
WO2010139961A1 (fr) Milieu filtrant comportant une multiplicité de couches filtrantes différentes et son utilisation pour tester des milieux filtrants
CA2768160C (fr) Filtre a fluides plisse sans separateur
JP7307621B2 (ja) プリーツフィルター複合用支持ネット
KR20190014347A (ko) 필터부재
WO2012120252A1 (fr) Procédé et appareil de filtration
KR102551154B1 (ko) 하이브리드 다층필터 및 그 제작방법
KR20200047372A (ko) 지지 및 배수 재료, 필터, 및 사용 방법
CN113905800B (zh) 用于可变褶皱过滤器的弯曲芯部
JPS632089Y2 (fr)
JP2006000798A (ja) イオン交換フィルタ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10785489

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10785489

Country of ref document: EP

Kind code of ref document: A1