NO20081981L - Hydraulisk kontroll- og aktiveringssystem for nedihullsverktøy - Google Patents
Hydraulisk kontroll- og aktiveringssystem for nedihullsverktøyInfo
- Publication number
- NO20081981L NO20081981L NO20081981A NO20081981A NO20081981L NO 20081981 L NO20081981 L NO 20081981L NO 20081981 A NO20081981 A NO 20081981A NO 20081981 A NO20081981 A NO 20081981A NO 20081981 L NO20081981 L NO 20081981L
- Authority
- NO
- Norway
- Prior art keywords
- valve member
- hydraulic control
- fluid communication
- low pressure
- activation system
- Prior art date
Links
- 230000004913 activation Effects 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 3
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
- E21B25/04—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
- E21B23/0412—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion characterised by pressure chambers, e.g. vacuum chambers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
- E21B23/042—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion using a single piston or multiple mechanically interconnected pistons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
- E21B47/16—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves through the drill string or casing, e.g. by torsional acoustic waves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/04—Ball valves
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
- Multiple-Way Valves (AREA)
Abstract
Et hydraulisk kontroll- og aktueringssystem (10) for et nedihullsverktøy (26) omfatter en ventil som inkluderer minst et ventllelement (28) som forflyttes mellom første og andre posisjoner for å tilveiebringe fluidforbindelse mellom vekselvis motsatte sider av et stempel (20) og hver av en energikilde (16) og et omrade (18) med lavt trykk; flere porter (32) som tilveiebringer fluidforbindelse mellom ventilelementet og hver av energikildene og området med lavt trykk; og minst en tetning (30) som bærer på ventilelementet, og hvor ingen tetning som bæres på ventilelementet, utsettes for trykk fra energikilden under kryssing av en av portene som har fluidforbindelse med området med lavt trykk.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/438,793 US7201230B2 (en) | 2003-05-15 | 2003-05-15 | Hydraulic control and actuation system for downhole tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO20081981L true NO20081981L (no) | 2004-11-15 |
Family
ID=32595341
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20041913A NO326566B1 (no) | 2003-05-15 | 2004-05-10 | Hydraulisk kontroll- og aktiveringssystem for nedihullsverktoy |
| NO20081981A NO20081981L (no) | 2003-05-15 | 2008-04-25 | Hydraulisk kontroll- og aktiveringssystem for nedihullsverktøy |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20041913A NO326566B1 (no) | 2003-05-15 | 2004-05-10 | Hydraulisk kontroll- og aktiveringssystem for nedihullsverktoy |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US7201230B2 (no) |
| GB (7) | GB2425796B (no) |
| NO (2) | NO326566B1 (no) |
Families Citing this family (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7201230B2 (en) * | 2003-05-15 | 2007-04-10 | Halliburton Energy Services, Inc. | Hydraulic control and actuation system for downhole tools |
| ITMI20040023A1 (it) * | 2004-01-13 | 2004-04-13 | Dresser Italia S R L | Sistema di controllo di un attuatore per l'azionamento di dispositivi sottomarini |
| US7347275B2 (en) * | 2004-06-17 | 2008-03-25 | Schlumberger Technology Corporation | Apparatus and method to detect actuation of a flow control device |
| US20060168955A1 (en) * | 2005-02-03 | 2006-08-03 | Schlumberger Technology Corporation | Apparatus for hydraulically energizing down hole mechanical systems |
| US7552773B2 (en) * | 2005-08-08 | 2009-06-30 | Halliburton Energy Services, Inc. | Multicycle hydraulic control valve |
| US7562713B2 (en) * | 2006-02-21 | 2009-07-21 | Schlumberger Technology Corporation | Downhole actuation tools |
| US7921876B2 (en) | 2007-11-28 | 2011-04-12 | Halliburton Energy Services, Inc. | Rotary control valve and associated actuator control system |
| BRPI0819604B1 (pt) * | 2007-11-30 | 2018-11-21 | Schlumberger Holdings Limited | método de realização de testes em zonas múltiplas |
| US7806184B2 (en) * | 2008-05-09 | 2010-10-05 | Wavefront Energy And Environmental Services Inc. | Fluid operated well tool |
| US8327954B2 (en) * | 2008-07-09 | 2012-12-11 | Smith International, Inc. | Optimized reaming system based upon weight on tool |
| US7699120B2 (en) * | 2008-07-09 | 2010-04-20 | Smith International, Inc. | On demand actuation system |
| US7793733B2 (en) * | 2008-08-28 | 2010-09-14 | Baker Hughes Incorporated | Valve trigger for downhole tools |
| US8087463B2 (en) * | 2009-01-13 | 2012-01-03 | Halliburton Energy Services, Inc. | Multi-position hydraulic actuator |
| US8127834B2 (en) * | 2009-01-13 | 2012-03-06 | Halliburton Energy Services, Inc. | Modular electro-hydraulic controller for well tool |
| US8151888B2 (en) * | 2009-03-25 | 2012-04-10 | Halliburton Energy Services, Inc. | Well tool with combined actuation of multiple valves |
| US8215408B2 (en) * | 2009-11-05 | 2012-07-10 | Schlumberger Technology Corporation | Actuation system for well tools |
| US9127528B2 (en) * | 2009-12-08 | 2015-09-08 | Schlumberger Technology Corporation | Multi-position tool actuation system |
| MX342598B (es) * | 2009-12-23 | 2016-10-06 | Schlumberger Tech B V * | Colocacion hidraulica de un mecanismo de aislamiento de pozo. |
| US8839871B2 (en) | 2010-01-15 | 2014-09-23 | Halliburton Energy Services, Inc. | Well tools operable via thermal expansion resulting from reactive materials |
| US8474533B2 (en) | 2010-12-07 | 2013-07-02 | Halliburton Energy Services, Inc. | Gas generator for pressurizing downhole samples |
| US8813857B2 (en) * | 2011-02-17 | 2014-08-26 | Baker Hughes Incorporated | Annulus mounted potential energy driven setting tool |
| US8668005B2 (en) | 2011-03-30 | 2014-03-11 | Eligio Antonio Colon | Dump bailer |
| US8727315B2 (en) | 2011-05-27 | 2014-05-20 | Halliburton Energy Services, Inc. | Ball valve |
| WO2013006159A1 (en) * | 2011-07-01 | 2013-01-10 | Halliburton Energy Services, Inc. | Well tool actuator and isolation valve for use in drilling operations |
| US8757274B2 (en) | 2011-07-01 | 2014-06-24 | Halliburton Energy Services, Inc. | Well tool actuator and isolation valve for use in drilling operations |
| US20130073242A1 (en) * | 2011-09-21 | 2013-03-21 | Honeywell International Inc. | Small volume prover apparatus and method for measuring flow rate |
| US9103204B2 (en) * | 2011-09-29 | 2015-08-11 | Vetco Gray Inc. | Remote communication with subsea running tools via blowout preventer |
| AU2011378455B2 (en) * | 2011-10-06 | 2015-08-06 | Halliburton Energy Services, Inc. | Downhole tester valve having rapid charging capabilities and method for use thereof |
| US9068411B2 (en) | 2012-05-25 | 2015-06-30 | Baker Hughes Incorporated | Thermal release mechanism for downhole tools |
| US9169705B2 (en) | 2012-10-25 | 2015-10-27 | Halliburton Energy Services, Inc. | Pressure relief-assisted packer |
| US9587486B2 (en) | 2013-02-28 | 2017-03-07 | Halliburton Energy Services, Inc. | Method and apparatus for magnetic pulse signature actuation |
| US9726009B2 (en) | 2013-03-12 | 2017-08-08 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing near-field communication |
| US9284817B2 (en) | 2013-03-14 | 2016-03-15 | Halliburton Energy Services, Inc. | Dual magnetic sensor actuation assembly |
| US10246991B2 (en) * | 2013-03-19 | 2019-04-02 | Schlumberger Technology Corporation | Acoustic detection system |
| US20150075770A1 (en) | 2013-05-31 | 2015-03-19 | Michael Linley Fripp | Wireless activation of wellbore tools |
| US9752414B2 (en) | 2013-05-31 | 2017-09-05 | Halliburton Energy Services, Inc. | Wellbore servicing tools, systems and methods utilizing downhole wireless switches |
| WO2015084389A1 (en) * | 2013-12-06 | 2015-06-11 | Halliburton Energy Services, Inc. | Actuation assembly using pressure delay |
| AU2014412711B2 (en) | 2014-11-25 | 2018-05-31 | Halliburton Energy Services, Inc. | Wireless activation of wellbore tools |
| US20160168948A1 (en) * | 2014-12-12 | 2016-06-16 | Baker Hughes Incorporated | Downhole tool actuating arrangement and method of resetting at least one downhole tool |
| US9850725B2 (en) | 2015-04-15 | 2017-12-26 | Baker Hughes, A Ge Company, Llc | One trip interventionless liner hanger and packer setting apparatus and method |
| CA2929685A1 (en) * | 2015-05-11 | 2016-11-11 | Ncs Multistage Inc. | Downhole flow control apparatus |
| CN108999583B (zh) * | 2018-08-13 | 2023-06-30 | 四川大学 | 具有防爆功能的保压筒上部密封结构 |
| US11091983B2 (en) * | 2019-12-16 | 2021-08-17 | Saudi Arabian Oil Company | Smart circulation sub |
| CN113216905B (zh) * | 2020-01-17 | 2025-01-28 | 中国石油天然气股份有限公司 | 油气井环空压力调节装置和管柱 |
| US11634959B2 (en) | 2021-08-30 | 2023-04-25 | Halliburton Energy Services, Inc. | Remotely operable retrievable downhole tool with setting module |
| US12241346B1 (en) | 2023-11-01 | 2025-03-04 | Halliburton Energy Services, Inc. | Remotely operated three position spool valve |
| WO2025243091A1 (en) * | 2024-05-22 | 2025-11-27 | Weatherford Technology Holdings, Llc | Well tool actuation upon pressure decrease |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3092135A (en) | 1956-04-27 | 1963-06-04 | Cicero C Brown | Full opening safety valve for pipe strings |
| US3533430A (en) | 1969-01-01 | 1970-01-01 | Otis Eng Corp | Shuttle valve |
| US4059157A (en) | 1976-01-26 | 1977-11-22 | Baker International Corporation | Well control valve apparatus |
| US4421174A (en) * | 1981-07-13 | 1983-12-20 | Baker International Corporation | Cyclic annulus pressure controlled oil well flow valve and method |
| US4633952A (en) * | 1984-04-03 | 1987-01-06 | Halliburton Company | Multi-mode testing tool and method of use |
| US4922423A (en) * | 1987-12-10 | 1990-05-01 | Koomey Paul C | Position and seal wear indicator for valves and blowout preventers |
| US4986357A (en) * | 1990-04-09 | 1991-01-22 | Pringle Ronald E | Well tool having a variable area hydraulic actuator |
| US5050681A (en) * | 1990-07-10 | 1991-09-24 | Halliburton Company | Hydraulic system for electronically controlled pressure activated downhole testing tool |
| US5251703A (en) * | 1991-02-20 | 1993-10-12 | Halliburton Company | Hydraulic system for electronically controlled downhole testing tool |
| AU1100992A (en) | 1991-02-20 | 1992-08-27 | Halliburton Company | Hydraulic system for electronically controlled downhole testing tool |
| US5101907A (en) | 1991-02-20 | 1992-04-07 | Halliburton Company | Differential actuating system for downhole tools |
| US5127477A (en) * | 1991-02-20 | 1992-07-07 | Halliburton Company | Rechargeable hydraulic power source for actuating downhole tool |
| US5234057A (en) * | 1991-07-15 | 1993-08-10 | Halliburton Company | Shut-in tools |
| JPH05150843A (ja) | 1991-11-29 | 1993-06-18 | Sumitomo Electric Ind Ltd | 比例圧力制御弁 |
| US5412568A (en) | 1992-12-18 | 1995-05-02 | Halliburton Company | Remote programming of a downhole tool |
| US5273113A (en) * | 1992-12-18 | 1993-12-28 | Halliburton Company | Controlling multiple tool positions with a single repeated remote command signal |
| GB2322953B (en) * | 1995-10-20 | 2001-01-03 | Baker Hughes Inc | Communication in a wellbore utilizing acoustic signals |
| US5890542A (en) * | 1997-04-01 | 1999-04-06 | Halliburton Energy Services, Inc. | Apparatus for early evaluation formation testing |
| US6536530B2 (en) * | 2000-05-04 | 2003-03-25 | Halliburton Energy Services, Inc. | Hydraulic control system for downhole tools |
| US7111675B2 (en) | 2001-08-20 | 2006-09-26 | Baker Hughes Incorporated | Remote closed system hydraulic actuator system |
| US7201230B2 (en) | 2003-05-15 | 2007-04-10 | Halliburton Energy Services, Inc. | Hydraulic control and actuation system for downhole tools |
-
2003
- 2003-05-15 US US10/438,793 patent/US7201230B2/en not_active Expired - Lifetime
-
2004
- 2004-05-10 NO NO20041913A patent/NO326566B1/no not_active IP Right Cessation
- 2004-05-13 GB GB0609145A patent/GB2425796B/en not_active Expired - Fee Related
- 2004-05-13 GB GB0410709A patent/GB2401620A/en active Pending
- 2004-05-13 GB GB0609149A patent/GB2425800B/en not_active Expired - Fee Related
- 2004-05-13 GB GB0609148A patent/GB2425799B/en not_active Expired - Fee Related
- 2004-05-13 GB GB0609150A patent/GB2426268B/en not_active Expired - Fee Related
- 2004-05-13 GB GB0609147A patent/GB2425798B/en not_active Expired - Fee Related
- 2004-05-13 GB GB0609146A patent/GB2425797B/en not_active Expired - Fee Related
-
2006
- 2006-10-18 US US11/550,685 patent/US7730954B2/en not_active Expired - Lifetime
-
2008
- 2008-04-25 NO NO20081981A patent/NO20081981L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO326566B1 (no) | 2009-01-12 |
| GB0609150D0 (en) | 2006-06-21 |
| GB2425800A (en) | 2006-11-08 |
| GB2425798A (en) | 2006-11-08 |
| GB2425799A (en) | 2006-11-08 |
| US7730954B2 (en) | 2010-06-08 |
| GB2426268A (en) | 2006-11-22 |
| GB0609146D0 (en) | 2006-06-21 |
| GB0609148D0 (en) | 2006-06-21 |
| GB2425800B (en) | 2007-07-11 |
| GB2425796B (en) | 2008-01-30 |
| GB2425799B (en) | 2007-07-11 |
| GB0609147D0 (en) | 2006-06-21 |
| GB2425796A (en) | 2006-11-08 |
| US7201230B2 (en) | 2007-04-10 |
| GB2425797A (en) | 2006-11-08 |
| GB2401620A (en) | 2004-11-17 |
| NO20041913L (no) | 2004-11-15 |
| US20070079968A1 (en) | 2007-04-12 |
| GB0609149D0 (en) | 2006-06-21 |
| GB2425797B (en) | 2007-07-11 |
| GB0609145D0 (en) | 2006-06-21 |
| GB2426268B (en) | 2008-01-30 |
| US20040226720A1 (en) | 2004-11-18 |
| GB0410709D0 (en) | 2004-06-16 |
| GB2425798B (en) | 2007-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO20081981L (no) | Hydraulisk kontroll- og aktiveringssystem for nedihullsverktøy | |
| GB2385348B (en) | Hydraulic control system for downhole tools | |
| IT1312496B1 (it) | Sistemi idraulici a pressione variabile particolarmente per meccanismi selettori e simili | |
| WO2007060449A3 (en) | Downhole tool | |
| WO2006135743A3 (en) | Electro-hydraulic devices | |
| NO20044570L (no) | System og fremgangsmate for styring av flere verktoy gjennom bare en styringsledning | |
| GB0202307D0 (en) | Pilot poppet type pressure control valve | |
| ATE413534T1 (de) | Hydraulisches system | |
| NO981261L (no) | Anordning for tidlig evaluering av formasjonstester | |
| ATE529674T1 (de) | Hochdruckluftbetätigtes 3-wege-ventil | |
| BR0300413A (pt) | Acoplamento submarino com acionadores de válvula de gatilho de intertravamento | |
| BR0101467A (pt) | Conjunto de válvula hidráulica, e, sistemahidráulico | |
| WO2005019600A3 (en) | Hydraulically actuated control system for use in a subterranean well | |
| ATE387600T1 (de) | Ventilanordnung | |
| DE60316889D1 (de) | Differenzdruckregelventil | |
| DE602005016371D1 (de) | Betätigungssteuereinrichtung für die Lamellen einer hydraulischen Doppelkupplung | |
| DE502005011313D1 (de) | Redundante elektrohydraulische ventilanordnung | |
| NO20024992D0 (no) | Trykkompensert pilotstyrt tilbakeslagsventil | |
| WO2003074911A3 (en) | A fluid valve | |
| FI20021980A0 (fi) | Järjestely hydraulipiirissä | |
| BR0202399A (pt) | Válvula dupla com capacidade antiagarramento | |
| ATE431906T1 (de) | Hydraulische steueranordnung | |
| NO20061428L (no) | Styring av fluildbronn | |
| NO20035665D0 (no) | Innretning for elektrohydraulisk dreievingedör | |
| WO1999066212A3 (de) | Regelvorrichtung für hydraulische arbeitsgeräte |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FC2A | Withdrawal, rejection or dismissal of laid open patent application |