WO2006003074A1 - Strömungsmaschine mit einem rotor der zumindest eine gebohrene rotorscheibe aufweist - Google Patents
Strömungsmaschine mit einem rotor der zumindest eine gebohrene rotorscheibe aufweist Download PDFInfo
- Publication number
- WO2006003074A1 WO2006003074A1 PCT/EP2005/052698 EP2005052698W WO2006003074A1 WO 2006003074 A1 WO2006003074 A1 WO 2006003074A1 EP 2005052698 W EP2005052698 W EP 2005052698W WO 2006003074 A1 WO2006003074 A1 WO 2006003074A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- rotor disk
- bore
- disk
- stresses
- Prior art date
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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
-
- 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
- F01D5/02—Blade-carrying members, e.g. rotors
-
- 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
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
-
- 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
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/19—Two-dimensional machined; miscellaneous
-
- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/29—Three-dimensional machined; miscellaneous
-
- 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
- F05D2250/00—Geometry
- F05D2250/20—Three-dimensional
- F05D2250/29—Three-dimensional machined; miscellaneous
- F05D2250/291—Three-dimensional machined; miscellaneous hollowed
-
- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
-
- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
- F05D2250/711—Shape curved convex
-
- 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
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
- F05D2250/712—Shape curved concave
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Definitions
- the invention relates to a turbomachine having a rotor rotatably mounted about a rotation axis, which rotor has at least one rotor disk, in which at least one axially extending bore is arranged. Furthermore, the invention relates to a rotor for a turbomachine and a
- Rotor disc with at least one axially extending bore through the rotor disk.
- Stationary gas turbines and aircraft turbines with rotors composed of a plurality of rotor disks are generally known.
- One central or several decentralized tie rods clamp the rotor disks together.
- the rotor disks have at least one cylindrical bore, through which the tie rods extend.
- Each rotor disk is formed in cross-section I-shaped and carries at its arranged parallel to the rotation axis outer flange, the blades of the turbine or the compressor.
- the radially inner flange also extends parallel to the axis of rotation, wherein at the axially outer ends of the inner flange seen radially inwardly projecting projections are provided.
- the inner flange of the rotor disk has a recess located between the projections, whose circumferential surface facing the axis of rotation of the rotor runs cylindrical in the middle region between the two outer projections.
- a rotor disk with a central bore is known, on the hub side seen in the axial direction, a cantilever freestanding, resilient arm is provided. To the spring action of the arm too improve, this is tapered in the central region of its axial extent.
- a one-piece 5 rotor for a double-flow steam turbine which has a central bore.
- the central rotor bore has an inner circumference, in cross section annular recess, which runs approximately 10 parallel to the comparison stress lines.
- Each rotor disk carries on its outer circumference arranged in a ring blades, which are for the compression of a Strö ⁇ mungsmediums or for receiving rotational energy from a flow medium of this flow around.
- the rotor blades attached to the rotor disk cause enormous centrifugal forces during operation, so that each rotor disk is exposed to great stresses.
- Rotor discs be faultless.
- suitable test drives are known, by means of which the Rotoor discs are examined for cracks and defects before their first use as well as during repeat tests, by a minimum service life
- One possibility for ensuring the required service life is the targeted introduction of residual compressive stresses into the material of the rotor disks, which delay the growth of defects, ie cracks, in later operation.
- this is purposefully overloaded, ie it is at a spin speed spun, which is higher than the rated speed of the rotor. This causes a plastic deformation in the area of the bore, which leads to the residual compressive stresses.
- the amount of compressive residual stress in the disc material is limited by the maximum spin speed of the spin test stand and by the spinning temperature, so that lower compressive residual stresses can be generated than desired.
- the object of the invention is therefore to specify a rotor disk for the rotor of a turbomachine, a rotor for a flow machine and a turbomachine, whose service life is prolonged by design measures.
- the object directed to the turbomachine is achieved by the features of claim 1, the object directed to the rotor by the features of claim 3 and the object directed to the rotor disk by the features of claim 4 An ⁇ .
- Advantageous embodiments are specified in the subclaims.
- the bore of the rotor disc extends in the axial direction at least partially spherically with a larger diameter in the middle region.
- the solution is based on the inventive idea underlying that by at least partially convex axially extending bore, the Mises equivalent stresses in ⁇ increase rule Boh ⁇ approximate range and an equalization of the tangential stress is brought about.
- the increase in the comparison voltage is based on the influence of the axial and tangential stress component through the spherical geometry of the bore, ie its convex cross-sectional shape. Due to the increased comparison stresses, a higher degree of plasticization occurs during spinning in the hub area, as a result of which the amount of compressive residual stresses increases due to geometry without an increase in the spin speed. Higher compressive residual stresses mean a delay in crack propagation and reduced risk of brittle fracture in later operation.
- the inventive step compared to JP 62-25143 is therefore in particular the realization that the transverse contraction is significantly lower in a rotor disk than in the known, one-piece rotor shaft.
- Compared to the known rotor shaft can be achieved for the first time in the rotor disk according to the invention due to the much lower transverse contraction, a particularly large increase in the comparison voltage, which allows the introduction of a higher compressive residual stress.
- An increase in the comparative voltages thus achieved was not previously known.
- the turbomachine can be designed as a turbine, as a compressor, as a gas turbine or as a steam turbine. It is independent, whether they are single-stage or Mo ⁇ stepped or axially or radially flowed through.
- the bore is central, ie in the center of the rotor disk, and / or decentralized, ie spaced from the center of the rotor disk, angeord ⁇ net.
- the effects achieved by the crowned embodiment are independent of whether the bore is provided centrally or decentrally.
- the maximum inner diameter of the spherical bore is arranged centrally in the axial direction between the end faces of the rotor disk. As a result, a symmetrical distribution of the increased compressive residual stress is achieved.
- FIG. 2 shows a side view of a rotor disk according to the invention with a convex bore
- FIG. 3 shows a sectional view through the rotor disk according to FIG
- Fig. 2 is a sectional view through a rotor disk of the
- Fig. 6 is a sectional view through the inventive
- FIG. 7 shows a radius-voltage diagram for the rotor disk according to the invention
- FIG. 8 shows a comparison of the characteristic curves of the diagrams from FIG. 5 and FIG. 7.
- FIG. 1 shows a turbomachine 1 designed as a turbomachine 1 with a rotatable about a rotation axis 3 gela ⁇ siege rotor 5.
- a turbomachine 1 designed as a turbomachine 1 with a rotatable about a rotation axis 3 gela ⁇ siege rotor 5.
- the Brenn ⁇ chamber 9 is the turbine unit 13 downstream.
- the rotor 5 has a plurality of adjoining rotor disks 20, in each of which a central bore 16 is provided, through which a tie rod 21 extends.
- FIG. 2 shows the side view of a rotor disk 14 according to the invention with a centrally arranged bore 15, which runs partially spherically in the axial direction, that is to say it is curved outwardly.
- FIG. 3 shows a section through the rotor disk 14 according to the invention as shown in FIG. 2.
- the bore 15 initially extends in a circular cylindrical manner in the axial direction of the rotor 5, then merges into a convex section and ends with a circular-cylindrical section.
- the diameter 17 of the bore 15 is maximum in the crowned section in the middle between the two end faces 19 of the rotor disk 14 and decreases uniformly on both sides in the direction of the end faces 19 or the Vietnamesezylindri ⁇ 's sections. Due to the axial in the form of a partially convex course of the bore 15, the rotor disk 14 has a convex, but at no point cylindrical recess.
- the material of the rotor disc, which surrounds the recess, thus has a concave contour.
- FIG. 4 shows a cylindrical drilled hole 16 known from the prior art through a rotor disk 20.
- FIG. 5 shows the profile of stresses ⁇ of a rotor disk 20 from the prior art in a radius-voltage diagram.
- the characteristic line 22 shown in a circle-dash line type shows the course of the tangential stresses in the distance x from the surface of the bore 16 in the radial direction.
- the characteristic shown in solid line 24 shows the Mises equivalent stresses ⁇ rule. Both stresses decrease with increasing distance x from the surface of the cylindrical bore 16 of the rotor disk 20. After spinning the rotor disk 20, this pressure compressive stresses, whose course is shown in dashed line type by the characteristic curve 26. The amount of compressive residual stresses decreases with increasing distance x.
- Fig. 6 shows the rotor disk 14 according to the invention with a along the axial direction completely convex bore 15, the shape is also referred to as spherical.
- FIG. 7 shows the profile of stresses ⁇ of a rotor disk 14 according to the invention in a radius-voltage diagram.
- the tangential 28 of the rotor disc 14 according to the invention are shown in a circular-dash line style and the Mises ⁇ comparatively voltages 30 in solid line shown.
- Both stresses decrease with increasing distance x from the surface of the spherical bore 15 of the rotor disk 14. After the rotor disk 14 has been sluiced, the latter has an inherent compressive residual stress 32, the magnitude of which decreases as the distance x increases.
- FIG. 8 shows the characteristic curves 22, 24, 26, 28, 30, 32 of the two diagrams FIG. 5 and FIG. 7 in comparison.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/631,768 US7819632B2 (en) | 2004-07-05 | 2005-06-10 | Turbo machine with a rotor which has at least one rotor disk with a bore |
JP2007518576A JP2008505270A (ja) | 2004-07-05 | 2005-06-10 | 流体機械におけるロータの回転円板 |
EP05760921A EP1763622A1 (de) | 2004-07-05 | 2005-06-10 | Strömungsmaschine mit einem rotor der zumindest eine gebohrene rotorscheibe aufweist |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04015806.5 | 2004-07-05 | ||
EP04015806A EP1614857A1 (de) | 2004-07-05 | 2004-07-05 | Strömungsmaschine mit einem Rotor der zumindest eine gebohrene Rotorscheibe aufweist |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003074A1 true WO2006003074A1 (de) | 2006-01-12 |
Family
ID=34925627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/052698 WO2006003074A1 (de) | 2004-07-05 | 2005-06-10 | Strömungsmaschine mit einem rotor der zumindest eine gebohrene rotorscheibe aufweist |
Country Status (5)
Country | Link |
---|---|
US (1) | US7819632B2 (de) |
EP (2) | EP1614857A1 (de) |
JP (1) | JP2008505270A (de) |
CN (1) | CN101040101A (de) |
WO (1) | WO2006003074A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080119165A1 (en) * | 2005-10-03 | 2008-05-22 | Ajay Mittal | Call routing via recipient authentication |
US7578656B2 (en) * | 2005-12-20 | 2009-08-25 | General Electric Company | High pressure turbine disk hub with reduced axial stress and method |
US20080140767A1 (en) * | 2006-06-14 | 2008-06-12 | Prasad Rao | Divitas description protocol and methods therefor |
GB0614972D0 (en) * | 2006-07-28 | 2006-09-06 | Rolls Royce Plc | A mounting disc |
EP2428642A1 (de) * | 2010-09-08 | 2012-03-14 | Siemens Aktiengesellschaft | Rotor für eine Dampfturbine mit zur Rotorachse geneigten Umfangsausnehmungen |
US10119400B2 (en) | 2012-09-28 | 2018-11-06 | United Technologies Corporation | High pressure rotor disk |
US8959767B2 (en) * | 2012-11-21 | 2015-02-24 | United Technologies Corporation | Method of extending life of rotating parts |
WO2016015222A1 (zh) * | 2014-07-29 | 2016-02-04 | 华为技术有限公司 | 数据加密传输方法和装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB219655A (en) * | 1923-07-28 | 1924-10-09 | Escher Wyss Maschf Ag | A rotor for high-speed engines and machines, more particularly for steam and gas turbines |
US2579745A (en) * | 1947-02-17 | 1951-12-25 | Rolls Royce | Axial-flow compressor or turbine |
US4497612A (en) * | 1983-11-25 | 1985-02-05 | General Electric Company | Steam turbine wheel antirotation means |
JPS62251403A (ja) * | 1986-04-25 | 1987-11-02 | Hitachi Ltd | 中心孔を有するロ−タ |
US4844694A (en) * | 1986-12-03 | 1989-07-04 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation (Snecma) | Fastening spindle and method of assembly for attaching rotor elements of a gas-turbine engine |
EP1013893A2 (de) * | 1998-12-22 | 2000-06-28 | General Electric Company | Verhinderung von unterschiedlicher Wärmedehnung bei Turbinenrotoren |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3400835A1 (de) * | 1984-01-12 | 1985-07-18 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Laufrad fuer turbomaschinen |
FR2712029B1 (fr) * | 1993-11-03 | 1995-12-08 | Snecma | Turbomachine pourvue d'un moyen de réchauffage des disques de turbines aux montées en régime. |
JP3149774B2 (ja) * | 1996-03-19 | 2001-03-26 | 株式会社日立製作所 | ガスタービンロータ |
JP2001003702A (ja) * | 1999-06-16 | 2001-01-09 | Mitsubishi Heavy Ind Ltd | ガスタービンロータ |
US7241111B2 (en) * | 2003-07-28 | 2007-07-10 | United Technologies Corporation | Contoured disk bore |
-
2004
- 2004-07-05 EP EP04015806A patent/EP1614857A1/de not_active Withdrawn
-
2005
- 2005-06-10 WO PCT/EP2005/052698 patent/WO2006003074A1/de active Application Filing
- 2005-06-10 EP EP05760921A patent/EP1763622A1/de not_active Withdrawn
- 2005-06-10 CN CNA200580029209XA patent/CN101040101A/zh active Pending
- 2005-06-10 JP JP2007518576A patent/JP2008505270A/ja active Pending
- 2005-06-10 US US11/631,768 patent/US7819632B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB219655A (en) * | 1923-07-28 | 1924-10-09 | Escher Wyss Maschf Ag | A rotor for high-speed engines and machines, more particularly for steam and gas turbines |
US2579745A (en) * | 1947-02-17 | 1951-12-25 | Rolls Royce | Axial-flow compressor or turbine |
US4497612A (en) * | 1983-11-25 | 1985-02-05 | General Electric Company | Steam turbine wheel antirotation means |
JPS62251403A (ja) * | 1986-04-25 | 1987-11-02 | Hitachi Ltd | 中心孔を有するロ−タ |
US4844694A (en) * | 1986-12-03 | 1989-07-04 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation (Snecma) | Fastening spindle and method of assembly for attaching rotor elements of a gas-turbine engine |
EP1013893A2 (de) * | 1998-12-22 | 2000-06-28 | General Electric Company | Verhinderung von unterschiedlicher Wärmedehnung bei Turbinenrotoren |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 0121, no. 26 (M - 687) 19 April 1988 (1988-04-19) * |
Also Published As
Publication number | Publication date |
---|---|
EP1763622A1 (de) | 2007-03-21 |
US7819632B2 (en) | 2010-10-26 |
EP1614857A1 (de) | 2006-01-11 |
JP2008505270A (ja) | 2008-02-21 |
US20080031724A1 (en) | 2008-02-07 |
CN101040101A (zh) | 2007-09-19 |
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