DE69937991D1 - Methode und verfahren zur kontrolle einer maschine - Google Patents
Methode und verfahren zur kontrolle einer maschineInfo
- Publication number
- DE69937991D1 DE69937991D1 DE69937991T DE69937991T DE69937991D1 DE 69937991 D1 DE69937991 D1 DE 69937991D1 DE 69937991 T DE69937991 T DE 69937991T DE 69937991 T DE69937991 T DE 69937991T DE 69937991 D1 DE69937991 D1 DE 69937991D1
- Authority
- DE
- Germany
- Prior art keywords
- controlling
- machine
- 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.)
- Expired - Lifetime
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/002—Calibrating
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- 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
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
-
- 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
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/3054—In combination with a pressure compensating valve the pressure compensating valve is arranged between directional control valve and 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
- F15B2211/31—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
- F15B2211/32—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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- 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
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
-
- 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
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
- F15B2211/60—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
- F15B2211/665—Methods of control using electronic components
- F15B2211/6653—Pressure 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
- F15B2211/6656—Closed loop control, i.e. control using feedback
-
- 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
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20062298 | 1998-07-15 | ||
JP20062298A JP3510114B2 (ja) | 1998-07-15 | 1998-07-15 | 作業機の制御方法およびその制御装置 |
PCT/JP1999/002403 WO2000004293A1 (fr) | 1998-07-15 | 1999-05-10 | Methode de commande d'engin de travaux et dispositif correspondant |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69937991D1 true DE69937991D1 (de) | 2008-03-06 |
DE69937991T2 DE69937991T2 (de) | 2009-01-15 |
Family
ID=16427449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69937991T Expired - Lifetime DE69937991T2 (de) | 1998-07-15 | 1999-05-10 | Methode und verfahren zur kontrolle einer maschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6401456B1 (de) |
EP (1) | EP1020648B1 (de) |
JP (1) | JP3510114B2 (de) |
KR (1) | KR100397516B1 (de) |
DE (1) | DE69937991T2 (de) |
WO (1) | WO2000004293A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6615114B1 (en) * | 1999-12-15 | 2003-09-02 | Caterpillar Inc | Calibration system and method for work machines using electro hydraulic controls |
US6397655B1 (en) * | 2000-04-03 | 2002-06-04 | Husco International, Inc. | Auto-calibration of a solenoid operated valve |
JP2002048235A (ja) * | 2000-08-02 | 2002-02-15 | Komatsu Ltd | 油圧ポンプの容量制御装置 |
US6965822B2 (en) * | 2002-07-19 | 2005-11-15 | Cnh America Llc | Work vehicle including startup control current calibration mechanism for proportional control systems |
US7114430B2 (en) * | 2004-09-30 | 2006-10-03 | Caterpillar Inc. | Adaptive position determining system for hydraulic cylinder |
US20060229787A1 (en) * | 2005-04-08 | 2006-10-12 | Kurup Prasaad B | Electro-hydraulic control process and work machine using same |
GB0517698D0 (en) * | 2005-08-30 | 2005-10-05 | Agco Gmbh | Hydraulic system for utility vehicles, in particular agricultural tractors |
JP4353190B2 (ja) * | 2006-02-27 | 2009-10-28 | コベルコ建機株式会社 | 建設機械の油圧回路 |
JP4900671B2 (ja) * | 2006-03-14 | 2012-03-21 | キャタピラー エス エー アール エル | 電子制御式コントロール弁較正装置 |
US7562554B2 (en) * | 2006-08-31 | 2009-07-21 | Caterpillar Inc. | Method for calibrating independent metering valves |
US8989971B2 (en) * | 2008-05-27 | 2015-03-24 | Eaton Corporation | Method and apparatus for detecting and compensating for pressure transducer errors |
WO2010130288A1 (en) * | 2009-05-12 | 2010-11-18 | Richard Bernard Schaper | Method for operating a cylinder, system and mannequin robot comprising the same |
US8166795B2 (en) * | 2009-11-30 | 2012-05-01 | Eaton Corporation | Out-of-range sensor recalibration |
ES2387775B1 (es) * | 2011-02-28 | 2013-06-06 | Abengoa Solar New Technologies S.A. | Seguidor solar. |
US8788245B2 (en) | 2011-07-15 | 2014-07-22 | Harnischfeger Technologies, Inc. | Systems and methods for actively biasing a loadpin |
CN103016466B (zh) * | 2012-12-24 | 2015-03-25 | 中联重科股份有限公司 | 液压供油单元、液压泵站及液压供油单元的供油控制方法 |
CN103148042B (zh) * | 2013-03-18 | 2015-08-19 | 中国铁建重工集团有限公司 | 用于测试液压缸的控制阀块***及方法 |
CN103967869B (zh) * | 2014-05-12 | 2017-06-13 | 三一汽车制造有限公司 | 一种液压缸加载检测装置 |
JP6554346B2 (ja) * | 2015-07-09 | 2019-07-31 | 株式会社神戸製鋼所 | 電子制御式バルブユニットの較正装置 |
US20170023149A1 (en) * | 2015-07-22 | 2017-01-26 | Cnh Industrial America Llc | Hydraulic signal control system and method |
CN105370643A (zh) * | 2015-12-23 | 2016-03-02 | 北汽福田汽车股份有限公司 | 工程机械及其闭式液压*** |
CN105443488B (zh) * | 2016-01-05 | 2017-05-10 | 廖冲雷 | 一种用于液压***的反馈控制器 |
CN105964731B (zh) * | 2016-05-16 | 2017-10-03 | 广东宏兴机械有限公司 | 一种龙门智能数控正反两用拉伸机 |
US20180112686A1 (en) * | 2016-10-26 | 2018-04-26 | Hydraforce, Inc. | Hydraulic actuator system of vehicle having secondary load-holding valve with tank connection |
CN110778550A (zh) * | 2019-11-29 | 2020-02-11 | 山西潞安集团余吾煤业有限责任公司 | 采煤机乳化液动力液压*** |
IT202000027167A1 (it) * | 2020-11-12 | 2022-05-12 | Cnh Ind Italia Spa | Metodo di controllo di una valvola di controllo elettroidraulica a centro aperto, in particolare per l’azionamento di un organo di un veicolo agricolo o da lavoro |
DE102021003236A1 (de) * | 2021-06-23 | 2022-12-29 | Hydac Fluidtechnik Gmbh | Verfahren zum Anpassen einer Ansteuerung eines Proportionalventils an seinen funktionsgemäßen Betrieb als Teil eines Fluidsystems |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4931967A (en) * | 1989-01-06 | 1990-06-05 | Deere & Company | Control system calibration |
JP3099538B2 (ja) * | 1992-08-06 | 2000-10-16 | コベルコ建機株式会社 | 方向制御弁の切換制御装置 |
AU664517B2 (en) * | 1993-05-28 | 1995-11-16 | Kubota Corporation | Hydraulic control system |
JPH06337003A (ja) * | 1993-05-28 | 1994-12-06 | Kubota Corp | 作業車の油圧アクチュエータ操作構造 |
JPH0735105A (ja) * | 1993-07-21 | 1995-02-03 | Komatsu Ltd | 油圧駆動機械の不感帯自動補正装置およびその不感帯自動補正方法 |
US5623093A (en) * | 1995-11-30 | 1997-04-22 | Caterpillar Inc. | Method and apparatus for calibrating an electrohydraulic system |
-
1998
- 1998-07-15 JP JP20062298A patent/JP3510114B2/ja not_active Expired - Fee Related
-
1999
- 1999-05-10 WO PCT/JP1999/002403 patent/WO2000004293A1/ja active IP Right Grant
- 1999-05-10 KR KR10-2000-7001391A patent/KR100397516B1/ko not_active IP Right Cessation
- 1999-05-10 US US09/485,021 patent/US6401456B1/en not_active Expired - Lifetime
- 1999-05-10 DE DE69937991T patent/DE69937991T2/de not_active Expired - Lifetime
- 1999-05-10 EP EP99918352A patent/EP1020648B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1020648A4 (de) | 2006-03-01 |
KR100397516B1 (ko) | 2003-09-13 |
DE69937991T2 (de) | 2009-01-15 |
KR20010022791A (ko) | 2001-03-26 |
US6401456B1 (en) | 2002-06-11 |
WO2000004293A1 (fr) | 2000-01-27 |
EP1020648B1 (de) | 2008-01-16 |
JP2000027812A (ja) | 2000-01-25 |
EP1020648A1 (de) | 2000-07-19 |
JP3510114B2 (ja) | 2004-03-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CATERPILLAR JAPAN LTD., TOKYO, JP |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: CATERPILLAR SARL, GENF, CH |