WO2009106462A1 - Turbinenschaufel für eine stationäre gasturbine - Google Patents
Turbinenschaufel für eine stationäre gasturbine Download PDFInfo
- Publication number
- WO2009106462A1 WO2009106462A1 PCT/EP2009/051909 EP2009051909W WO2009106462A1 WO 2009106462 A1 WO2009106462 A1 WO 2009106462A1 EP 2009051909 W EP2009051909 W EP 2009051909W WO 2009106462 A1 WO2009106462 A1 WO 2009106462A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- side wall
- platform
- rib
- turbine blade
- opening
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
- F01D5/188—Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
- F01D5/143—Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/80—Platforms for stationary or moving blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
- F05D2260/941—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF] particularly aimed at mechanical or thermal stress reduction
Definitions
- the invention relates to a turbine blade for a stationary gas turbine, comprising at least one platform region, which comprises a platform with a platform surface on which a profiled in cross section airfoil is arranged with a pressure side wall and a suction side wall, wherein the hot gas exposable surfaces of the pressure side wall and the suction side wall each pass over an outer rounding in the platform surface and with at least one disposed in the blade, extending into the platform area cavity, in which at least one of the pressure side wall with the suction side wall connecting rib is provided, which along a longitudinal direction of the airfoil dividing dividing the cavity.
- the aforementioned turbine blades have long been known. As a rule, they have an airfoil traversed by cavities, which cavities are separated from one another by ribs.
- the ribs extend from the suction side wall to the pressure side wall and along the longitudinal direction of the airfoil, i. H. from the platform to the blade tip.
- cast turbine blades have a transitional area between the blade leaf and the platform surface, which by means of a fillet-like rounding reduces the blade side walls, ie. H. the suction side wall and the pressure side wall, thickening in this area. In the transition region thus an accumulation of material is present, which also brings a jump in stiffness of the airfoil with it.
- the blade is thus platform-stiffer than in its central region or blade tip side. Due to this jump in stiffness, it can become larger during operation
- Blade usually distributed evenly and always centered between suction and pressure side, to ensure uniform cooling of the leading edge.
- At least one of the fins arranged in the airfoil, at the level of the outer fillet, has a wall-proximate opening penetrating the rib in the case of an input turbine blade.
- the opening is provided at the level of the outer rounding in the interior of the turbine blade in the rib arranged there. Close to the wall can mean that their position between the inner sides of the pressure side wall and the suction side wall is eccentric. As a result, the accumulation of material at the level of the outer rounding can be reduced. This simple constructive means leads to the equalization of the stiffness jump and to the reduction of the
- an adaptation of a further rounding arranged between the rib and the side wall may be expedient.
- mechanical loads are reduced.
- the proposed measures can also be combined to the entering through the use of the near-wall opening
- Compensate for changes to achieve an overall extended life of the turbine blade can be reduced with the invention, the burden of material accumulation and thus increase the life.
- the inventive measure to provide in the rib at the level of the outer rounding a rib penetrating wall-near opening is easy to implement and can also be retrofitted in operationally loaded turbine blades, provided that the accessibility to the rib is ensured by the blade root.
- the opening in the production of new parts can be easily achieved. are sufficient if the airfoil and the platform are cast in one piece and the casting core used for the production of the cavities in the casting device for the later present in the rib wall near opening is realized by a bore in the core.
- the bore can also be used to stabilize the casting core and other so-called cross-over holes, which neither near the wall nor at the level of the outer rounding in a rib, which is arranged between the suction side wall and the pressure side wall, are provided, can be omitted.
- An opening penetrating the rib is not only close to the wall when it is arranged eccentrically between the suction side wall and the pressure side wall, but also when it touches or intersects the side wall plane spanned by the inside of the suction side wall and / or pressure side wall.
- the opening is round or oval. These openings can be produced particularly easily, in particular if the turbine blade has essentially been cast in one piece. A casting core must then have only a corresponding hole at the appropriate location.
- the service life of a turbine blade according to the preamble of claim 1 can also be extended by the fact that the platform-side rib end extends longer or shorter on the inside of the pressure side wall than on the inside of the suction side wall.
- the turbine blade according to the second embodiment can have a platform surface which is part of an imaginary platform plane which extends through the cavity, wherein the platform-side end of the rib lies on the pressure side on the one hand the platform plane and on the suction side on the other hand the platform plane.
- FIG. 1 shows a perspective view of a turbine blade according to the invention with a schematically illustrated airfoil
- FIG 2 shows the detail Z as a detail of the turbine blade according to the invention according to FIG 1 in a perspective view
- FIG. 1 shows a perspective view of a turbine blade 10 for a stationary gas turbine.
- the turbine blade 10 according to FIG. 1 is designed as a rotor blade. However, the invention can also be applied in guide vanes of a stationary gas turbine.
- the cast, one-piece turbine blade 10 comprises along a longitudinal direction 12 a blade root 14, to which a platform region 16 adjoins.
- the platform region 16 essentially comprises a platform 18 having a platform surface 20.
- the platform surface 20 is substantially planar and thus
- a profiled in cross-section blade 24 is arranged on the platform surface 20 .
- the airfoil 24 is supported by a pressure tenwand 26 and a suction side wall 28 are formed, which extend from a common front edge 30 to a common trailing edge 32 and thereby merge into each other both at the front edge 30 and at the trailing edge 32.
- the surfaces of the suction side wall 28, the pressure side wall 26 and the platform surface 20 are flowed around by a hot gas of the gas turbine. Both the pressure side wall 26 and the suction side wall 28 merge into the platform 18 via a hollow groove-like circumferential rounding 34.
- the mixing fertil 34 and the transition region is also known as fillet.
- Each rib 36 extends, at least within the airfoil 24, along its longitudinal direction 12. In FIG. 1, only one stub of the airfoil 24 is shown. The complete blade up to the blade tip is indicated only by a dashed line.
- FIG. 2 shows the detail Z of the turbine blade 10 according to FIG. 1 in a perspective view, wherein, for reasons of clarity, insignificant elements in the direction of the front edge 30 and the trailing edge 32 are hidden.
- FIG. 2 shows in detail the features already described for FIG. 1: the platform surface 20, the pressure side wall 26, the suction side wall 28, the platform 18, the rib 36 and the rounding 34.
- a rib 36 penetrating wall-near opening 40 is provided in the rib 36 - viewed along the longitudinal direction 12 of the blade leaf 24 - at the level of the outer rounding 34.
- the near-wall opening 40 is executed in the embodiment shown around.
- An oval opening 40 is possible.
- the opening 40 is arranged with respect to an inner side 42 of the pressure side wall 26 such that the sidewall plane 44 spanned by it is cut by the opening 40. This results in the area of the outer rounding 34 a material reduction, which with the reference numeral 46 is shown hatched.
- the effect of the invention can also be achieved with a turbine blade 10, in which the web 50 is not present.
- the detail Z shown in FIG. 3 essentially corresponds to the detail mentioned in FIG. 2 and will therefore not be described in more detail here.
- Identical features are provided with identical reference numerals in FIG.
- no completely surrounded by material opening 40 of the rib 36 is provided.
- the rib 36 ends platform on a non-uniform height with respect to the longitudinal extent of the turbine blade 10.
- a recess is provided instead of the opening 40.
- the platform-side rib end extends on the inside 42 of the pressure side wall 26 less far than the arranged on the inside 43 of the suction side wall 28 fin end.
- the platform surface 20 is part of an imaginary platform plane 22 which extends through the cavity.
- the platform-side end of the rib 36 on the pressure side on the one hand ie above (blade tip side) of the platform level 22 and suction side on the other hand, ie below (blade foot side) of the platform level 22.
- An inverted arrangement of the rib ends is also possible, in which the platform side terminates the pressure-side end of the rib below and the suction-side end of the rib above the platform plane.
- the manner of the course of the platform-side rib end from the pressure side 26 to the suction side 28 can be designed as desired.
- the course may for example be rectilinear or, as shown in the embodiment shown 3, convex / concave.
- a further rounding 41 which in the transition from the rib 36 to the inner wall 42, 43 of the pressure side wall 26 and / or suction sidewall 28 is present.
- the adaptation leads to different radii Rl, R2 for the further rounding 41 at different positions along the longitudinal extent 12 of the airfoil 24.
- the radius Rl of the further rounding 41 can be greater at the level of the outer rounding 34 than the radius R2 of the further rounding 41 the mean height of the airfoil 24th
- the opening 40 or recess is provided on the pressure side wall.
- the opening 40 or the recess according to the invention can be arranged on the suction side, since higher hot gas and material temperatures occur in the corresponding regions.
- the recessed recess at the level of the outer fillet 34 may also extend beyond the region of the rib 36 along the inner side 42, 43, so that the recess is arranged on the inside also in the section of the transition region where no rib 36 engages the side walls 26 , 28 is supported.
- the recess deepens each associated spanned sidewall plane of the side walls 26, 28 in a hollow throat, whereby a mass reduction can also be achieved in the portion of the outer rounding 34, in which no rib 36 is arranged.
- This recess can also be used in a turbine blade formed according to FIG.
- stress reductions can thus be achieved, which causes cracking and possibly crack growth to occur further delayed in this section of the transition region.
- the invention relates to a turbine blade 10 for a stationary gas turbine, which has a hollow airfoil 24, in which at least one inside the inside of the Drucktown- 26 and the suction side wall 28 supporting rib 36 is present in the extension of the life of the turbine blade 10th at the level of the outer rounding 34 between the side wall 26, 28 and platform surface 20 a rib 36 penetrating wall-near opening 40 is provided.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Control Of Turbines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010548075A JP4971507B2 (ja) | 2008-02-28 | 2009-02-18 | 定置型ガスタービン用のタービン翼 |
| ES09713896T ES2374520T3 (es) | 2008-02-28 | 2009-02-18 | �?labe de turbina para una turbina de gas fija. |
| PL09713896T PL2245273T3 (pl) | 2008-02-28 | 2009-02-18 | Łopatka turbiny, do stacjonarnej turbiny gazowej |
| US12/919,265 US8602741B2 (en) | 2008-02-28 | 2009-02-18 | Turbine vane for a stationary gas turbine |
| CN200980106674.7A CN101960096B (zh) | 2008-02-28 | 2009-02-18 | 用于固定式燃气轮机的涡轮叶片 |
| EP09713896A EP2245273B1 (de) | 2008-02-28 | 2009-02-18 | Turbinenschaufel für eine stationäre gasturbine |
| AT09713896T ATE531899T1 (de) | 2008-02-28 | 2009-02-18 | Turbinenschaufel für eine stationäre gasturbine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08003728.6 | 2008-02-28 | ||
| EP08003728A EP2096261A1 (de) | 2008-02-28 | 2008-02-28 | Turbinenschaufel für eine stationäre Gasturbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009106462A1 true WO2009106462A1 (de) | 2009-09-03 |
Family
ID=40242678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/051909 Ceased WO2009106462A1 (de) | 2008-02-28 | 2009-02-18 | Turbinenschaufel für eine stationäre gasturbine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8602741B2 (de) |
| EP (2) | EP2096261A1 (de) |
| JP (1) | JP4971507B2 (de) |
| CN (1) | CN101960096B (de) |
| AT (1) | ATE531899T1 (de) |
| ES (1) | ES2374520T3 (de) |
| PL (1) | PL2245273T3 (de) |
| WO (1) | WO2009106462A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012144244A1 (ja) * | 2011-04-22 | 2012-10-26 | 三菱重工業株式会社 | 翼部材及び回転機械 |
| EP2863010A1 (de) | 2013-10-21 | 2015-04-22 | Siemens Aktiengesellschaft | Turbinenschaufel |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014116475A1 (en) | 2013-01-23 | 2014-07-31 | United Technologies Corporation | Gas turbine engine component having contoured rib end |
| US10519781B2 (en) | 2017-01-12 | 2019-12-31 | United Technologies Corporation | Airfoil turn caps in gas turbine engines |
| US10465528B2 (en) | 2017-02-07 | 2019-11-05 | United Technologies Corporation | Airfoil turn caps in gas turbine engines |
| US10480329B2 (en) | 2017-04-25 | 2019-11-19 | United Technologies Corporation | Airfoil turn caps in gas turbine engines |
| US10267163B2 (en) * | 2017-05-02 | 2019-04-23 | United Technologies Corporation | Airfoil turn caps in gas turbine engines |
| DE102017218886A1 (de) * | 2017-10-23 | 2019-04-25 | MTU Aero Engines AG | Schaufel und Rotor für eine Strömungsmaschine sowie Strömungsmaschine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2314125A (en) * | 1988-08-24 | 1997-12-17 | United Technologies Corp | Cooled blades for a gas turbine engine |
| US5716192A (en) * | 1996-09-13 | 1998-02-10 | United Technologies Corporation | Cooling duct turn geometry for bowed airfoil |
| EP1420142A1 (de) * | 1997-08-07 | 2004-05-19 | United Technologies Corporation | Gekühlte Turbinenschaufel |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3370829A (en) * | 1965-12-20 | 1968-02-27 | Avco Corp | Gas turbine blade construction |
| US6290463B1 (en) * | 1999-09-30 | 2001-09-18 | General Electric Company | Slotted impingement cooling of airfoil leading edge |
| GB2395232B (en) * | 2002-11-12 | 2006-01-25 | Rolls Royce Plc | Turbine components |
| US20050265839A1 (en) * | 2004-05-27 | 2005-12-01 | United Technologies Corporation | Cooled rotor blade |
| US7195448B2 (en) * | 2004-05-27 | 2007-03-27 | United Technologies Corporation | Cooled rotor blade |
| US7220103B2 (en) | 2004-10-18 | 2007-05-22 | United Technologies Corporation | Impingement cooling of large fillet of an airfoil |
| US7574782B2 (en) * | 2005-05-26 | 2009-08-18 | S.C. Johnson Home Storage, Inc. | Apparatus and method of operatively retaining an actuating member on an elongate closure mechanism |
| US7713027B2 (en) * | 2006-08-28 | 2010-05-11 | United Technologies Corporation | Turbine blade with split impingement rib |
-
2008
- 2008-02-28 EP EP08003728A patent/EP2096261A1/de not_active Withdrawn
-
2009
- 2009-02-18 PL PL09713896T patent/PL2245273T3/pl unknown
- 2009-02-18 US US12/919,265 patent/US8602741B2/en not_active Expired - Fee Related
- 2009-02-18 ES ES09713896T patent/ES2374520T3/es active Active
- 2009-02-18 AT AT09713896T patent/ATE531899T1/de active
- 2009-02-18 CN CN200980106674.7A patent/CN101960096B/zh not_active Expired - Fee Related
- 2009-02-18 JP JP2010548075A patent/JP4971507B2/ja active Active
- 2009-02-18 WO PCT/EP2009/051909 patent/WO2009106462A1/de not_active Ceased
- 2009-02-18 EP EP09713896A patent/EP2245273B1/de not_active Not-in-force
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2314125A (en) * | 1988-08-24 | 1997-12-17 | United Technologies Corp | Cooled blades for a gas turbine engine |
| US5716192A (en) * | 1996-09-13 | 1998-02-10 | United Technologies Corporation | Cooling duct turn geometry for bowed airfoil |
| EP1420142A1 (de) * | 1997-08-07 | 2004-05-19 | United Technologies Corporation | Gekühlte Turbinenschaufel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012144244A1 (ja) * | 2011-04-22 | 2012-10-26 | 三菱重工業株式会社 | 翼部材及び回転機械 |
| CN103459776A (zh) * | 2011-04-22 | 2013-12-18 | 三菱重工业株式会社 | 叶片部件及旋转机械 |
| JP5655210B2 (ja) * | 2011-04-22 | 2015-01-21 | 三菱日立パワーシステムズ株式会社 | 翼部材及び回転機械 |
| CN103459776B (zh) * | 2011-04-22 | 2015-07-08 | 三菱日立电力系统株式会社 | 叶片部件及旋转机械 |
| US9181807B2 (en) | 2011-04-22 | 2015-11-10 | Mitsubishi Hitachi Power Systems, Ltd. | Blade member and rotary machine |
| EP2863010A1 (de) | 2013-10-21 | 2015-04-22 | Siemens Aktiengesellschaft | Turbinenschaufel |
| WO2015058916A1 (de) | 2013-10-21 | 2015-04-30 | Siemens Aktiengesellschaft | Turbinenschaufel |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110033305A1 (en) | 2011-02-10 |
| CN101960096B (zh) | 2014-06-25 |
| EP2245273B1 (de) | 2011-11-02 |
| EP2096261A1 (de) | 2009-09-02 |
| CN101960096A (zh) | 2011-01-26 |
| US8602741B2 (en) | 2013-12-10 |
| ATE531899T1 (de) | 2011-11-15 |
| ES2374520T3 (es) | 2012-02-17 |
| EP2245273A1 (de) | 2010-11-03 |
| JP4971507B2 (ja) | 2012-07-11 |
| JP2011513623A (ja) | 2011-04-28 |
| PL2245273T3 (pl) | 2012-03-30 |
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