WO2004065798A1 - Accurate fluid operated cylinder positioning system - Google Patents
Accurate fluid operated cylinder positioning system Download PDFInfo
- Publication number
- WO2004065798A1 WO2004065798A1 PCT/US2004/001853 US2004001853W WO2004065798A1 WO 2004065798 A1 WO2004065798 A1 WO 2004065798A1 US 2004001853 W US2004001853 W US 2004001853W WO 2004065798 A1 WO2004065798 A1 WO 2004065798A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- housing
- fluid
- position sensor
- chamber
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
- F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
- F15B9/09—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/43—Programme-control systems fluidic
- G05B19/44—Programme-control systems fluidic pneumatic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/765—Control of position or angle of the output member
- F15B2211/7656—Control of position or angle of the output member with continuous position control
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41304—Pneumatic
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41309—Hydraulic or pneumatic drive
Definitions
- the present invention discloses an accurate and inexpensive fluid operated cylinder positioning system and method. Positioning a cylinder or valve mainstage based on differential pressure according to the present invention can be a viable method of control that is more cost effective and completely different from current offerings by industry leaders.
- the present invention uses standard, inexpensive components and techniques to achieve control with accuracy approaching that of an expensive system, but with a cost comparable to a simple system.
- L c is the length from the inside end of the cap end to the surface of the piston.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04704847A EP1595079A1 (en) | 2003-01-24 | 2004-01-23 | Accurate fluid operated cylinder positioning system |
CA2513707A CA2513707C (en) | 2003-01-24 | 2004-01-23 | Accurate fluid operated cylinder positioning system |
JP2006501113A JP4690309B2 (en) | 2003-01-23 | 2004-01-23 | Position control system for fluid operated cylinders |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44219103P | 2003-01-24 | 2003-01-24 | |
US60/442,191 | 2003-01-24 | ||
US46054903P | 2003-04-04 | 2003-04-04 | |
US60/460,549 | 2003-04-04 | ||
US47103103P | 2003-05-16 | 2003-05-16 | |
US60/471,031 | 2003-05-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004065798A1 true WO2004065798A1 (en) | 2004-08-05 |
WO2004065798A8 WO2004065798A8 (en) | 2004-11-11 |
Family
ID=32777022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/001853 WO2004065798A1 (en) | 2003-01-23 | 2004-01-23 | Accurate fluid operated cylinder positioning system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1595079A1 (en) |
JP (1) | JP4690309B2 (en) |
CA (1) | CA2513707C (en) |
WO (1) | WO2004065798A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100462883C (en) * | 2006-02-23 | 2009-02-18 | 上海交通大学 | Mesa ball X-Y trace pneumatic controller |
WO2017182325A1 (en) * | 2016-04-21 | 2017-10-26 | Festo Ag & Co. Kg | Method for the supply of compressed air to a compressed-air consumer, valve device and data carrier having a computer program |
WO2018152069A1 (en) | 2017-02-15 | 2018-08-23 | Nikon Corporation | Dual valve fluid actuator assembly |
EP2839169B1 (en) | 2012-04-20 | 2020-04-01 | Bimba Manufacturing Company | Actuator predictive system |
US11224931B2 (en) | 2016-05-20 | 2022-01-18 | Nasarc Technologies Inc. | Motion control method and system for servicing of welding torch |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6962944B2 (en) * | 2019-01-08 | 2021-11-05 | Ckd株式会社 | Fluid pressure actuator movement amount detection device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628499A (en) * | 1984-06-01 | 1986-12-09 | Scientific-Atlanta, Inc. | Linear servoactuator with integrated transformer position sensor |
GB2203195A (en) * | 1987-03-19 | 1988-10-12 | Festo Kg | Circuit for operating a fluid-pressure driven piston |
US5424941A (en) * | 1991-08-02 | 1995-06-13 | Mosier Industries, Inc. | Apparatus and method for positioning a pneumatic actuator |
US5431086A (en) * | 1992-11-25 | 1995-07-11 | Canon Kabushiki Kaisha | Method of controlling cylinder apparatus |
US6085632A (en) * | 1998-01-16 | 2000-07-11 | Festo Ag & Co. | Apparatus for the damped positioning of a piston |
DE10122297C1 (en) * | 2001-05-08 | 2002-06-27 | Festo Ag & Co | Hydraulic circuit and control system for moving piston and locking it in position has proximity switches measuring cylinder position and sending signals to control circuit |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4925362A (en) * | 1972-06-30 | 1974-03-06 | ||
JPS63176801A (en) * | 1987-01-13 | 1988-07-21 | Kashio Denki Kk | Control method for positioning of air cylinder |
JPH0442561Y2 (en) * | 1987-05-26 | 1992-10-08 | ||
JPH02229902A (en) * | 1989-03-01 | 1990-09-12 | Matsushita Electric Ind Co Ltd | Pneumatic driving unit |
JPH044301A (en) * | 1990-04-18 | 1992-01-08 | Matsushita Electric Ind Co Ltd | Air pressure driving device |
JPH07317701A (en) * | 1994-05-24 | 1995-12-08 | Sugimoto Seiki Kk | Electromagnetic controller for cylinder and its controlling method |
US6289259B1 (en) * | 1998-10-16 | 2001-09-11 | Husky Injection Molding Systems Ltd. | Intelligent hydraulic manifold used in an injection molding machine |
-
2004
- 2004-01-23 JP JP2006501113A patent/JP4690309B2/en not_active Expired - Fee Related
- 2004-01-23 EP EP04704847A patent/EP1595079A1/en not_active Withdrawn
- 2004-01-23 WO PCT/US2004/001853 patent/WO2004065798A1/en active Application Filing
- 2004-01-23 CA CA2513707A patent/CA2513707C/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628499A (en) * | 1984-06-01 | 1986-12-09 | Scientific-Atlanta, Inc. | Linear servoactuator with integrated transformer position sensor |
GB2203195A (en) * | 1987-03-19 | 1988-10-12 | Festo Kg | Circuit for operating a fluid-pressure driven piston |
US5424941A (en) * | 1991-08-02 | 1995-06-13 | Mosier Industries, Inc. | Apparatus and method for positioning a pneumatic actuator |
US5431086A (en) * | 1992-11-25 | 1995-07-11 | Canon Kabushiki Kaisha | Method of controlling cylinder apparatus |
US6085632A (en) * | 1998-01-16 | 2000-07-11 | Festo Ag & Co. | Apparatus for the damped positioning of a piston |
DE10122297C1 (en) * | 2001-05-08 | 2002-06-27 | Festo Ag & Co | Hydraulic circuit and control system for moving piston and locking it in position has proximity switches measuring cylinder position and sending signals to control circuit |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100462883C (en) * | 2006-02-23 | 2009-02-18 | 上海交通大学 | Mesa ball X-Y trace pneumatic controller |
EP2839169B1 (en) | 2012-04-20 | 2020-04-01 | Bimba Manufacturing Company | Actuator predictive system |
US11572904B2 (en) | 2012-04-20 | 2023-02-07 | Bimba Llc | Actuator predictive system |
US11879484B2 (en) | 2012-04-20 | 2024-01-23 | Bimba Llc | Actuator predictive system |
WO2017182325A1 (en) * | 2016-04-21 | 2017-10-26 | Festo Ag & Co. Kg | Method for the supply of compressed air to a compressed-air consumer, valve device and data carrier having a computer program |
US10808738B2 (en) | 2016-04-21 | 2020-10-20 | Festo Se & Co. Kg | Method for the supply of compressed air to a compressed-air consumer, valve device and data carrier with a computer program |
US11224931B2 (en) | 2016-05-20 | 2022-01-18 | Nasarc Technologies Inc. | Motion control method and system for servicing of welding torch |
WO2018152069A1 (en) | 2017-02-15 | 2018-08-23 | Nikon Corporation | Dual valve fluid actuator assembly |
CN110914554A (en) * | 2017-02-15 | 2020-03-24 | 株式会社尼康 | Dual valve fluid actuator assembly |
EP3583322A4 (en) * | 2017-02-15 | 2020-12-16 | Nikon Corporation | Dual valve fluid actuator assembly |
US11092170B2 (en) | 2017-02-15 | 2021-08-17 | Nikon Corporation | Dual valve fluid actuator assembly |
CN110914554B (en) * | 2017-02-15 | 2022-07-19 | 株式会社尼康 | Dual valve fluid actuator assembly |
Also Published As
Publication number | Publication date |
---|---|
CA2513707C (en) | 2011-10-11 |
JP4690309B2 (en) | 2011-06-01 |
EP1595079A1 (en) | 2005-11-16 |
JP2006515409A (en) | 2006-05-25 |
WO2004065798A8 (en) | 2004-11-11 |
CA2513707A1 (en) | 2004-08-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7021191B2 (en) | Accurate fluid operated cylinder positioning system | |
US9394897B2 (en) | Apparatus using electronically-controlled valves | |
CN102483079B (en) | Position measuring device for capturing the position of at least one actuator of a fluidic system without a position sensor | |
US7191593B1 (en) | Electro-hydraulic actuator system | |
Gulati et al. | A globally stable, load-independent pressure observer for the servo control of pneumatic actuators | |
JPH02161183A (en) | Hydraulic circuit-controlling | |
CN103233932B (en) | High integration hydraulic driving unit structure | |
JPS63167102A (en) | Air actuator device | |
US8991169B2 (en) | Method for adapting stiffness in a variable stiffness actuator | |
CA2513707C (en) | Accurate fluid operated cylinder positioning system | |
US20120199768A1 (en) | Mesofluidic digital valve | |
JPH0357324B2 (en) | ||
US5678846A (en) | Vehicle suspension device | |
US8616237B2 (en) | Mesofluidic two stage digital valve | |
JP7195557B2 (en) | hydraulic drive | |
CN1742161A (en) | Accurate fluid operated cylinder positioning system | |
Stoll et al. | A compliant, high precision, pneumatic rotary drive for robotics | |
JP4614544B2 (en) | Actuator device | |
NO345199B1 (en) | Flow measuring device | |
SU798365A1 (en) | Positioning apparatus | |
EP0251603A2 (en) | Hydraulic actuator controlled by servovalve | |
Campana et al. | Low Cost Robotic Arm Manipulator Controller With Single Stage Fluid Valves | |
Sindrey et al. | Position Tracking Control of Miniature Low Pressure Water Hydraulic Cylinders | |
GB2392505A (en) | System for measuring force in fluid powered actuators | |
JPH09126332A (en) | Spool valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
CFP | Corrected version of a pamphlet front page | ||
CR1 | Correction of entry in section i |
Free format text: IN PCT GAZETTE 32/2004 UNDER (30) REPLACE "23 JANUARY 2003 (23.01.03)" BY "24 JANUARY 2003 (24.01.03)" |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2513707 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006501113 Country of ref document: JP Ref document number: 20048026557 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004704847 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2004704847 Country of ref document: EP |