CN1151338C - 压力/流量控制阀 - Google Patents
压力/流量控制阀 Download PDFInfo
- Publication number
- CN1151338C CN1151338C CNB001038648A CN00103864A CN1151338C CN 1151338 C CN1151338 C CN 1151338C CN B001038648 A CNB001038648 A CN B001038648A CN 00103864 A CN00103864 A CN 00103864A CN 1151338 C CN1151338 C CN 1151338C
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- valve body
- hydraulic fluid
- fluid port
- 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
- 239000012530 fluid Substances 0.000 claims abstract description 109
- 230000001105 regulatory effect Effects 0.000 claims description 44
- 238000004891 communication Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- F15B11/02—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
-
- 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
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
-
- 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
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
- F15B2211/40561—Flow control characterised by the type of flow control means or valve with pressure compensating valves the pressure compensating valve arranged upstream of the flow control means
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple valves
- F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check 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
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in 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
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out 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
- F15B2211/40—Flow control
- F15B2211/47—Flow control in one direction only
- F15B2211/473—Flow control in one direction only without restriction in the reverse direction
-
- 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
- F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing 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
- F15B2211/70—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
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/5109—Convertible
- Y10T137/5153—Reversible check
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7781—With separate connected fluid reactor surface
- Y10T137/7793—With opening bias [e.g., pressure regulator]
- Y10T137/7801—Balanced valve
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/8733—Fluid pressure regulator in at least one branch
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87338—Flow passage with bypass
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87555—Having direct response valve [e.g., check valve, etc.]
- Y10T137/87563—With reverse flow direction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Control Of Fluid Pressure (AREA)
- Flow Control (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6379999 | 1999-03-10 | ||
JP63799/1999 | 1999-03-10 | ||
JP20068299A JP3598235B2 (ja) | 1999-03-10 | 1999-07-14 | 圧力流量制御弁 |
JP200682/1999 | 1999-07-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003101131810A Division CN1293313C (zh) | 1999-03-10 | 2000-03-10 | 压力/流量控制阀 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1266951A CN1266951A (zh) | 2000-09-20 |
CN1151338C true CN1151338C (zh) | 2004-05-26 |
Family
ID=26404921
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB001038648A Expired - Lifetime CN1151338C (zh) | 1999-03-10 | 2000-03-10 | 压力/流量控制阀 |
CNB2003101131810A Expired - Lifetime CN1293313C (zh) | 1999-03-10 | 2000-03-10 | 压力/流量控制阀 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003101131810A Expired - Lifetime CN1293313C (zh) | 1999-03-10 | 2000-03-10 | 压力/流量控制阀 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6227231B1 (zh) |
JP (1) | JP3598235B2 (zh) |
KR (1) | KR100398080B1 (zh) |
CN (2) | CN1151338C (zh) |
DE (1) | DE10010602B4 (zh) |
TW (1) | TW445350B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109072955A (zh) * | 2016-04-27 | 2018-12-21 | Smc株式会社 | 流体控制阀 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3598235B2 (ja) * | 1999-03-10 | 2004-12-08 | Smc株式会社 | 圧力流量制御弁 |
ATE433074T1 (de) * | 2004-03-22 | 2009-06-15 | Festo Ag & Co Kg | Anschlussvorrichtung für fluidleitungen |
EP1602834B1 (de) * | 2004-03-22 | 2007-03-21 | FESTO AG & Co | Anschlussvorrichtung für Fluidleitungen |
CN100412365C (zh) * | 2006-12-22 | 2008-08-20 | 浙江大学 | 一种基于时间控制顶开活塞压缩机进气阀的装置 |
JP5339842B2 (ja) * | 2008-10-06 | 2013-11-13 | キヤノン株式会社 | 吐出ヘッド及び液滴吐出装置 |
DE202009006299U1 (de) * | 2009-04-29 | 2010-09-09 | Liebherr-France Sas, Colmar | Hydrauliksystem sowie mobile Baumaschine |
JP5282196B2 (ja) * | 2010-01-21 | 2013-09-04 | Smc株式会社 | 流量制御装置 |
JP2013232466A (ja) * | 2012-04-27 | 2013-11-14 | Mitsuboshi Diamond Industrial Co Ltd | 基板吸着装置 |
JP2014160424A (ja) * | 2013-02-20 | 2014-09-04 | Smc Corp | 流量制御装置 |
US20140261746A1 (en) * | 2013-03-13 | 2014-09-18 | Gilbert W. Younger | Methods And Systems For Improving The Operation Of Transmissions For Motor Vehicles |
BR112016004469B1 (pt) | 2013-09-02 | 2022-01-18 | Smc Corporation | Válvula de controle de fluido |
CN106537013B (zh) * | 2014-08-01 | 2019-01-08 | 浜国际有限公司 | 速度控制器 |
JP6551740B2 (ja) * | 2015-10-28 | 2019-07-31 | Smc株式会社 | 流体制御弁 |
CN109185249A (zh) * | 2018-09-28 | 2019-01-11 | 广东机电职业技术学院 | 一种汽车液压转向系统流量自动控制阀 |
CN114658857A (zh) * | 2020-12-23 | 2022-06-24 | 丹佛斯(天津)有限公司 | 流量控制阀、具有流量控制阀的油泵组件以及涡旋压缩机 |
CN117605843B (zh) * | 2024-01-19 | 2024-03-29 | 四川中油乐仪能源装备制造股份有限公司 | 一种易于更换阀瓣和阀座的节流截止放空阀门 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3951162A (en) * | 1971-11-03 | 1976-04-20 | Koehring Company | Control valve with flow control means |
JPS614789Y2 (zh) * | 1976-02-24 | 1986-02-14 | ||
US4171007A (en) * | 1976-03-05 | 1979-10-16 | Societe Anonyme: La Telemecanique Electrique | Unidirectional flow limiter |
JPS6212081Y2 (zh) * | 1976-10-27 | 1987-03-26 | ||
US4197874A (en) * | 1978-08-31 | 1980-04-15 | Mac Valves, Inc. | Pressure regulator and flow control valve with pre-exhaust vent means |
US4271864A (en) * | 1980-03-31 | 1981-06-09 | Mac Valves, Inc. | Pressure regulating valve |
JPS6212084A (ja) | 1985-07-09 | 1987-01-21 | 日立電線株式会社 | 帯状発熱体の給電端末部 |
JPS6212081A (ja) * | 1985-07-10 | 1987-01-21 | 株式会社 明王化成 | ピンコネクタ−及びその製造方法 |
US5081904A (en) * | 1989-08-30 | 1992-01-21 | Aladdin Engineering & Mfg., Inc. | Locking valve and flow control valve assembly |
JP3778634B2 (ja) * | 1996-11-22 | 2006-05-24 | Smc株式会社 | パイロットチェック弁付スピードコントローラ |
JP3598235B2 (ja) * | 1999-03-10 | 2004-12-08 | Smc株式会社 | 圧力流量制御弁 |
-
1999
- 1999-07-14 JP JP20068299A patent/JP3598235B2/ja not_active Expired - Fee Related
-
2000
- 2000-03-02 TW TW89103649A patent/TW445350B/zh not_active IP Right Cessation
- 2000-03-03 US US09/518,927 patent/US6227231B1/en not_active Expired - Lifetime
- 2000-03-03 DE DE2000110602 patent/DE10010602B4/de not_active Expired - Lifetime
- 2000-03-09 KR KR10-2000-0011753A patent/KR100398080B1/ko active IP Right Grant
- 2000-03-10 CN CNB001038648A patent/CN1151338C/zh not_active Expired - Lifetime
- 2000-03-10 CN CNB2003101131810A patent/CN1293313C/zh not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109072955A (zh) * | 2016-04-27 | 2018-12-21 | Smc株式会社 | 流体控制阀 |
Also Published As
Publication number | Publication date |
---|---|
US6227231B1 (en) | 2001-05-08 |
CN1517563A (zh) | 2004-08-04 |
KR20000062794A (ko) | 2000-10-25 |
CN1266951A (zh) | 2000-09-20 |
KR100398080B1 (ko) | 2003-09-19 |
TW445350B (en) | 2001-07-11 |
CN1293313C (zh) | 2007-01-03 |
DE10010602B4 (de) | 2004-04-22 |
JP3598235B2 (ja) | 2004-12-08 |
DE10010602A1 (de) | 2000-09-28 |
JP2000320503A (ja) | 2000-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
CI01 | Publication of corrected invention patent application |
Correction item: Inventor Correct: Yang Qinghai False: Yang Xihai Number: 38 Page: 61 Volume: 16 |
|
CI02 | Correction of invention patent application |
Correction item: Inventor Correct: Yang Qinghai False: Yang Xihai Number: 38 Page: The title page Volume: 16 |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20040526 |
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CX01 | Expiry of patent term |