[go: up one dir, main page]

WO1996031656A1 - Bloc de pavage et son procede de fabrication - Google Patents

Bloc de pavage et son procede de fabrication Download PDF

Info

Publication number
WO1996031656A1
WO1996031656A1 PCT/AU1996/000200 AU9600200W WO9631656A1 WO 1996031656 A1 WO1996031656 A1 WO 1996031656A1 AU 9600200 W AU9600200 W AU 9600200W WO 9631656 A1 WO9631656 A1 WO 9631656A1
Authority
WO
WIPO (PCT)
Prior art keywords
tiles
mould
base section
paving block
bonding agent
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/AU1996/000200
Other languages
English (en)
Inventor
Glenn Whiteford
Trevor Dixon
Marc Mearing
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.)
Amatek Ltd
Original Assignee
Amatek 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
Application filed by Amatek Ltd filed Critical Amatek Ltd
Priority to AU51384/96A priority Critical patent/AU5138496A/en
Publication of WO1996031656A1 publication Critical patent/WO1996031656A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0053Machines or methods for applying the material to surfaces to form a permanent layer thereon to tiles, bricks or the like
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/001Pavings made of prefabricated single units on prefabricated supporting structures or prefabricated foundation elements except coverings made of layers of similar elements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C5/00Pavings made of prefabricated single units
    • E01C5/22Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups E01C5/008, E01C5/02 - E01C5/20 except embedded reinforcing materials
    • E01C5/223Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups E01C5/008, E01C5/02 - E01C5/20 except embedded reinforcing materials on prefabricated supporting or prefabricated foundation units, except coverings made of layers of similar elements
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2201/00Paving elements
    • E01C2201/04Paving elements consisting of natural stones and a binder
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2201/00Paving elements
    • E01C2201/06Sets of paving elements

Definitions

  • This invention relates to a paving product.
  • the invention has particular application in the paving of outdoor areas although it is not so limited.
  • the invention also relates to a method for producing a composite paving product and a mould suitable for the manufacture of such a product.
  • tile is used to embrace any rigid and discrete unit which may be used in conjunction with other such units for the formation of a paved or other surface for taking pedestrian traffic.
  • the term is used to include baked clay tiles, pavers and mosaic pieces.
  • it has been general practice to lay exterior tiles in the following manner. First, the ground is prepared by levelling the surface. A firm base is applied to the ground surface to form a foundation for the tiles or pavers.
  • a bed of sand is prepared on which the pavers or tiles are laid and they are then compacted into the sand bed using a plate vibrator. Once the pavers are compacted into place dry sand is swept into the joints and vibrated once more. Whilst this methodology is generally quite effective, it does give rise to various difficulties. First, if one is laying a tile pattern which is particularly ornate and with small tiles, the process is particularly time consuming. This generally means that ornate outdoor tiling over a large area is prohibitively expensive for most domestic purposes. Secondly, small tiles laid in this fashion have a tendency to roll over when a high load is applied (such as by the heel of a shoe). If the tile rolls over to any significant extent the tile will become loose.
  • a paving block with incorporates a rigid base section having upper and lower surfaces, a plurality of tiles each having upper and lower faces and a bonding agent which extends from the base section between each of the respective tiles; wherein the said tiles are affixed to the base section and the bonding agent extends between adjacent tiles from the base to a level between the lower and upper faces of the respective tiles.
  • the rigid base section is formed from an aggregate material such as concrete. Most preferred are those concretes which are highly fluid and which are rapid setting.
  • Conventional tiles may be used in the construction of the paving block.
  • the invention has particular application where the tiles used are small and are affixed to the upper surface of the base section in a predetermined pattern.
  • the bonding agent extends from the base section between respective adjacent tiles to a level beneath the upper surface of the tiles. In this way a gap is left between the respective tiles and this gap may be filled in the normal manner with a product such as joint filling sand once the paving blocks have been installed.
  • This joint filling sand is a blend of specially graded fine sands and selective additives.
  • the bonding agent also provides inter-tile adhesion.
  • the bonding agent may be any suitable material which is preferably substantially non-compressible and rigid once it is set. It may be a separate adhesive material applied to the base section between the tiles but preferably it is integral with the base section and is formed from the same material.
  • the bonding agent extends upwardly from the base section to a level representing at least one quarter of the thickness of the tiles. Most preferably the bonding agent extends upwardly from the base section for a distance representing between one third to one half of the thickness of the tiles. Thus for example if the tiles have a thickness of approximately 24mm it is preferred that the bonding agent extend at least 6mm upwardly from the base section between the tiles. Most preferably the bonding agent extends upwardly from the base section by a distance of between 8 to 12mm.
  • the overall thickness of the paving block is between 50 to 60mm and the tiles are between 20 to 25mm. It will be appreciated that the installation of paving blocks made in accordance with the invention significantly simplifies the laying of pattern tiles especially in outdoor applications. Once the appropriate area has been levelled the paving blocks of the invention can be laid side-by-side with each of the tiles fixed in the required or desired pattern. Once the paving blocks have been laid the gaps between the respective tiles can be filled with a joint filling material such as joint filling sand in the normal way.
  • a method of manufacturing a paving block including the following steps:
  • the mould provided is rectangular or square having a base and perpendicular side walls.
  • the side walls are formed from two “L” sections hinged together at respective ends and lockable into position by a toggle latch or the like.
  • the base of the mould preferably includes upstands or ridges so to accurately locate and separate the respective tiies so that they are disposed and maintained in a desired pattern during the construction process.
  • appropriately positioned pins may be located into the base of the mould.
  • Whatever separating means is provided it is preferred that the tiles once located within the base of the mould be separated on ail sides by between 3 to 6mm and most preferably between 4 to 5mm. This gap will match the required sand joint when the constructed paving unit is installed.
  • the gap between the respective tiles when being located into the base of the mould be no more than 7mm.
  • the filler be an absorbent material and fine sand is the preferred filling material. If the filler is fine sand it will prevent any of the subsequently introduced concrete flowing down and staining the upper faces of the tiles.
  • the filler should preferably be introduced between the tiles to a height above the bottom of the mould equal to at least half the thickness of the tiles. Preferably it is introduced to a height equal to between one half and three quarters of the thickness of the tiles.
  • the same uncured concrete mixture is used in both steps (c) and (d) as recited above and is introduced into the mould in a single operation.
  • the concrete used is preferably a highly fluid concrete which when poured into the mould will completely fill the gap between the respective tiles not filled with the sand. Further it is preferred that the concrete be a rapid setting concrete so that the assembled paving block may be removed from the mould reasonably shortly after construction so to make the mould available for the construction of further units. It is preferred that the concrete used be one which will cure within 30 minutes.
  • a mould for constructing a paving block said mould including a base and peripheral side walls wherein the base of the mould is provided with separating means so to locate and separate tiles introduced into the mould in a predetermined pattern.
  • the mould is preferably made from galvanised steel and it is preferred that the side walls be hinged at at least one point.
  • the separating means may be constituted by pins attached to the base of the mould located in appropriate locations or upstands or ridges of appropriate width provided on the base plate of the mould.
  • Figure 1 is a cross-sectional representation of a paving block made in accordance with the invention.
  • FIG 2 is a perspective view of a mould used in the manufacture of a paving block made in accordance with the invention.
  • a paving block 1 which includes a base section 2 and plurality of tiles 3,4,5. Each of the tiles are affixed to the base section 2.
  • a bonding agent 6 extends upwardly from the base section 2 between the respective tiles 4 and 5 and 3 and 4.
  • the bonding agent 6 is integral and made of the same material as the base section 2. Preferably this is a rapid setting concrete.
  • the bonding agent 6 extends to a level equal to half the thickness of the tiles. As previously indicated it is preferred that the bonding extend between the tiles by a distance equal to between one quarter to one half of the thickness of the tiles. The bonding agent 6 does not extend to the level of upper faces 7,8,9 of tiles 3,4,5 respectively thus leaving gaps 10,10a between the tiles towards the upper face of the paving block.
  • any conventional tile or paver may be used in forming the paving block of the invention.
  • ceramic and/or clay tiles and/or pavers are used.
  • the tiles are manufactured from conventional concrete pavers.
  • standard 50mm thick concrete pavers might be used. If these units are cut in half lengthwise one can obtain two thin biscuits each of approximately 23mm in thickness. Concrete pavers can be made to have a particularly aesthetic appearance if they are honed and if using this type of product it is preferred that the 50mm concrete paver be honed on both sides before it is cut into the two thin biscuits. These biscuits may be then further cut using a diamond saw or the like into separate leaves having particular shapes so to create a desired pattern. Of course this procedure is just one of many different options open to one constructing the paving unit of the present invention.
  • the tiles 3,4,5 are each approximately 25mm in thickness.
  • the base section 2 is about 35mm in thickness so that the total thickness of the paving block is about 60mm. It should be appreciated that these dimensions are indicative only and that the dimensions of the paving block may be varied depending on the particular application.
  • the bonding agent 6 extends upwardly from the base section 2 by a distance of approximately 12mm.
  • Figure 2 there is illustrated a mould 11.
  • the mould is square in shape and is formed from a base plate 12 and side walls 13,14.
  • Side walls 13,14 are "L" shaped and are hinged together at point 15.
  • Side walls 13,14 may be locked together at point 16 by a latch such as the toggle latch 17 depicted in Figure 2.
  • the side walls of the mould may be stiffened with angle sections 18 affixed to the side walls such as by spot welding.
  • the base and side walls are formed from galvanised steel.
  • separators 19 Attached to the base plate 12 are separators 19 affixed to the base plate 12 in a pattern which is the mirror image of the desired pattern of the formed paving block.
  • the separators 19 shown in Figure 2 are provided by lengths of galvanised wire soldered to the base plate 12. Alternatively separating pins standing to a height of approximately 5mm may be utilised with two pins being provided for each edge of the respective tiles.
  • the separating means 19 are required to correctly locate the tiles in the desired pattern and to provide a precise gap between each of the respective adjacent tiles.
  • a mould such as that shown in Figure 2 is first assembled and lightly oiled on the upper half of the side walls.
  • each respective tile i.e. that surface which is to form the upper surface of the paving block
  • the upper surface of each respective tile i.e. that surface which is to form the upper surface of the paving block
  • the filler preferably sand
  • the filler is introduced into the gaps between each tile to a height preferably equal to at least one quarter of the thickness of the tile.
  • the sand is introduced between each leaf to a height of 12mm above the bottom of the mould. This will leave approximately a further 12mm of gap height without sand.
  • the gap can be further filled to a height of approximately 15mm from the bottom of the mould to leave a 10mm gap height without sand.
  • the assembly is then allowed to cure and if a rapid setting concrete is used the formed paving block should be ready for removal from the mould within 30 minutes.
  • the mould is thereafter cleaned and reassembled ready for the manufacture of the next block.
  • the base of the mould may incorporate separating means oriented and positioned to create any desired pattern.
  • the paving block Once the paving block has cured it may be installed with several like units to provide a paved area. Once the units have been assembled the upper gaps 10 and 10a may be filled with joint filling sand or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Road Paving Structures (AREA)
  • Producing Shaped Articles From Materials (AREA)

Abstract

L'invention concerne un bloc de pavage (1) comportant une section de base rigide (2) possédant des surfaces supérieure et inférieure, une pluralité de dalles (3, 4, 5) présentant chacune des faces supérieure et inférieure, et un agent de liaison (6) s'étendant, depuis la section de base (2), dans les interstices (10, 10a) entre les dalles. Ces dernières (3, 4, 5) sont posées sur la section de base (2) et l'agent de liaison (6) s'étend de la section de base jusqu'à un certain niveau entre les faces supérieure et inférieure des dalles respectives. Est également décrit un procédé de fabrication de ce bloc de pavage dans un moule, dans lequel les interstices (10, 10a) entre les dalles (3, 4, 5) sont partiellement remplis d'une charge non adhésive avant l'introduction de l'agent de liaison (6) dans le moule.
PCT/AU1996/000200 1995-04-06 1996-04-09 Bloc de pavage et son procede de fabrication Ceased WO1996031656A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51384/96A AU5138496A (en) 1995-04-06 1996-04-09 Paving block and method of manufacturing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN2198A AUPN219895A0 (en) 1995-04-06 1995-04-06 Paving block and method of manufacturing same
AUPN2198 1995-04-06

Publications (1)

Publication Number Publication Date
WO1996031656A1 true WO1996031656A1 (fr) 1996-10-10

Family

ID=3786553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000200 Ceased WO1996031656A1 (fr) 1995-04-06 1996-04-09 Bloc de pavage et son procede de fabrication

Country Status (2)

Country Link
AU (1) AUPN219895A0 (fr)
WO (1) WO1996031656A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050505A1 (fr) * 1998-04-01 1999-10-07 Impianti 2000 S.N.C. Di Valcavi Anna E C. Procede et moyens servant a creer des panneaux de signalisation routiere
NL1019939C2 (nl) * 2002-02-11 2003-08-13 Univ Delft Tech Werkwijze voor het hechten van beton aan een substraat alsmede zo verkregen constructie.
EP3112331A1 (fr) * 2015-06-29 2017-01-04 MBI Group B.V. Procédé de fabrication d'un carreau stratifié et produit obtenu par ce procédé
EP3216773A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Procédé de fabrication d'une tuile stratifiée, produit obtenu par ce procédé et utilisation d'un apprêt
EP3216776A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Tuile laminée et procédé de fabrication de celle-ci
CN115059260A (zh) * 2022-07-15 2022-09-16 菏泽德合建工集团有限公司开发区装饰分公司 一种室内地面装修装饰陶瓷砖铺砌施工工艺
US12485578B2 (en) 2024-09-10 2025-12-02 Benelux Applied Surfaces, LLC Method for manufacturing a tile product

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261114A (en) * 1925-08-18 1926-11-18 Octave Chappat Improvements in block paving for roads and in blocks & slabs therefor
GB316012A (en) * 1928-07-26 1929-07-25 Richard Canning Brown Improvements in and connected with building blocks or bricks
US1885720A (en) * 1929-10-29 1932-11-01 Hilda E Hewett Composite paving block
BE852355A (fr) * 1976-03-11 1977-07-01 Magne Bernard Element de revetement et/ou de construction
FR2385846A1 (fr) * 1977-03-29 1978-10-27 Magne Bernard Elements prefabriques pour allees pietonnieres
EP0422340A1 (fr) * 1989-10-12 1991-04-17 Hideharu Osada Panneau pour appliquer sur un bâtiment et méthode pour sa fabrication
JPH03159703A (ja) * 1989-11-17 1991-07-09 Masanari Nishimura 道路、擁壁等のブロック製造法
FR2670223A1 (fr) * 1990-12-06 1992-06-12 Maynadier Christian Element de construction pret a etre pose en revetement par pavage, son procede de fabrication et son procede de pose.
US5281047A (en) * 1992-05-28 1994-01-25 Richard Skaug Masonry landscaping modules and methods of landscaping
DE4301118A1 (de) * 1993-01-18 1994-09-22 Josef Prinz Naturstein-Fertigbauteil

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB261114A (en) * 1925-08-18 1926-11-18 Octave Chappat Improvements in block paving for roads and in blocks & slabs therefor
GB316012A (en) * 1928-07-26 1929-07-25 Richard Canning Brown Improvements in and connected with building blocks or bricks
US1885720A (en) * 1929-10-29 1932-11-01 Hilda E Hewett Composite paving block
BE852355A (fr) * 1976-03-11 1977-07-01 Magne Bernard Element de revetement et/ou de construction
FR2385846A1 (fr) * 1977-03-29 1978-10-27 Magne Bernard Elements prefabriques pour allees pietonnieres
EP0422340A1 (fr) * 1989-10-12 1991-04-17 Hideharu Osada Panneau pour appliquer sur un bâtiment et méthode pour sa fabrication
JPH03159703A (ja) * 1989-11-17 1991-07-09 Masanari Nishimura 道路、擁壁等のブロック製造法
FR2670223A1 (fr) * 1990-12-06 1992-06-12 Maynadier Christian Element de construction pret a etre pose en revetement par pavage, son procede de fabrication et son procede de pose.
US5281047A (en) * 1992-05-28 1994-01-25 Richard Skaug Masonry landscaping modules and methods of landscaping
DE4301118A1 (de) * 1993-01-18 1994-09-22 Josef Prinz Naturstein-Fertigbauteil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, M-1164, page 155; & JP,A,03 159 703, (NISHIMURA), 9 July 1991. *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050505A1 (fr) * 1998-04-01 1999-10-07 Impianti 2000 S.N.C. Di Valcavi Anna E C. Procede et moyens servant a creer des panneaux de signalisation routiere
US6488441B1 (en) 1998-04-01 2002-12-03 Impianti 2000 S.N.C. Di Valcavi Anna E.C. Method and means for forming road signs
NL1019939C2 (nl) * 2002-02-11 2003-08-13 Univ Delft Tech Werkwijze voor het hechten van beton aan een substraat alsmede zo verkregen constructie.
US10737985B2 (en) 2015-06-29 2020-08-11 Mbi Group B.V. Method for manufacturing a layered tile and a product obtained with said method
EP3231784A1 (fr) * 2015-06-29 2017-10-18 MBI Group B.V. Tuile stratifiée et son procédé de fabrication
EP3112331A1 (fr) * 2015-06-29 2017-01-04 MBI Group B.V. Procédé de fabrication d'un carreau stratifié et produit obtenu par ce procédé
US12441664B2 (en) 2015-06-29 2025-10-14 Mbi Group B.V. Method for manufacturing a layered tile and a product obtained with said method
EP3216773A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Procédé de fabrication d'une tuile stratifiée, produit obtenu par ce procédé et utilisation d'un apprêt
EP3216776A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Tuile laminée et procédé de fabrication de celle-ci
EP3216775A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Procédé de fabrication d'une tuile stratifiée, produit obtenu par ce procédé et utilisation d'un apprêt
EP3216774A1 (fr) * 2016-03-11 2017-09-13 MBI Group B.V. Tuile laminée et procédé de fabrication de celle-ci
CN115059260A (zh) * 2022-07-15 2022-09-16 菏泽德合建工集团有限公司开发区装饰分公司 一种室内地面装修装饰陶瓷砖铺砌施工工艺
US12485578B2 (en) 2024-09-10 2025-12-02 Benelux Applied Surfaces, LLC Method for manufacturing a tile product

Also Published As

Publication number Publication date
AUPN219895A0 (en) 1995-05-04

Similar Documents

Publication Publication Date Title
US5487526A (en) Mold device for forming concrete pathways
US20060107610A1 (en) Methods for making composite tiles
CA1044063A (fr) Pavement decoratif a elements distincts separes par des joints de dilatation
US4932182A (en) Floor tile forming and structural underlayment device
CA1068507A (fr) Coffrages de maconnerie
US7425106B2 (en) Concrete pavers positioned in a herringbone pattern
JP2006502325A5 (fr)
US4815886A (en) Expansion joint for concrete and method for use
US4324504A (en) Method of sealing bridge deck joints
US20100205899A1 (en) Masonry sub-flooring
WO1996031656A1 (fr) Bloc de pavage et son procede de fabrication
JP3045073U (ja) 舗装用ブロック
US7000884B2 (en) Paving system
GB2360959A (en) Profiled structural elements or surfaces
US20100098489A1 (en) Preformed screed system
JPS59134204A (ja) タイル貼コンクリ−ト平板ブロツク及びその製造方法
JPH11511213A (ja) タイルおよび床面におけるまたはこれらに関する改良
JP7665560B2 (ja) 舗装材、及び、舗装面の施工方法
US11162229B1 (en) Paver system
AU2003266855A1 (en) Methods for making composite tiles
GB2282775A (en) Paving slab moulds
JP2002348805A (ja) 舗装用ブロック
JPH03206201A (ja) ローラ転圧コンクリート舗装の施工方法とその敷き均し機械
JP2618776B2 (ja) ブロックの敷設方法
US20160097167A1 (en) Devices and methods for using a flexible connector element in the construction of a floor

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA