OA09188A - A Sonic well tool transmitter and receiver array including an attenuation and delay apparatus. - Google Patents
A Sonic well tool transmitter and receiver array including an attenuation and delay apparatus.Info
- Publication number
- OA09188A OA09188A OA59751A OA59751A OA09188A OA 09188 A OA09188 A OA 09188A OA 59751 A OA59751 A OA 59751A OA 59751 A OA59751 A OA 59751A OA 09188 A OA09188 A OA 09188A
- Authority
- OA
- OAPI
- Prior art keywords
- receiver array
- attenuation
- well tool
- sonic
- delay apparatus
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/52—Structural details
- G01V1/523—Damping devices
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S367/00—Communications, electrical: acoustic wave systems and devices
- Y10S367/911—Particular well-logging apparatus
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Surgical Instruments (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Small-Scale Networks (AREA)
- Transceivers (AREA)
- Electrophonic Musical Instruments (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Food-Manufacturing Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/325,405 US5036945A (en) | 1989-03-17 | 1989-03-17 | Sonic well tool transmitter receiver array including an attenuation and delay apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
OA09188A true OA09188A (en) | 1992-03-31 |
Family
ID=23267758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
OA59751A OA09188A (en) | 1989-03-17 | 1990-03-13 | A Sonic well tool transmitter and receiver array including an attenuation and delay apparatus. |
Country Status (16)
Country | Link |
---|---|
US (2) | US5036945A (ja) |
EP (1) | EP0388316B1 (ja) |
JP (1) | JPH0681877B2 (ja) |
AT (1) | ATE120556T1 (ja) |
AU (1) | AU617043B2 (ja) |
BR (1) | BR9001263A (ja) |
DE (1) | DE69018114D1 (ja) |
DK (1) | DK0388316T3 (ja) |
IE (1) | IE67788B1 (ja) |
MA (1) | MA21772A1 (ja) |
MX (1) | MX171789B (ja) |
MY (1) | MY105539A (ja) |
NO (1) | NO301663B1 (ja) |
OA (1) | OA09188A (ja) |
TN (1) | TNSN90031A1 (ja) |
ZA (1) | ZA902049B (ja) |
Families Citing this family (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2668836B1 (fr) * | 1990-11-06 | 1993-04-30 | Schlumberger Services Petrol | Transducteur acoustique de puits. |
US5343001A (en) * | 1992-10-13 | 1994-08-30 | Shell Oil Company | Acoustic multi-mode logging device adapted to decouple noise within a semi-rigid receiver array |
US5289433A (en) * | 1992-10-13 | 1994-02-22 | Shell Oil Company | Acoustic multi-mode wide-band logging device |
US5357481A (en) * | 1992-11-04 | 1994-10-18 | Western Atlas International, Inc. | Borehole logging tool |
US5387767A (en) * | 1993-12-23 | 1995-02-07 | Schlumberger Technology Corporation | Transmitter for sonic logging-while-drilling |
AU4700496A (en) * | 1995-01-12 | 1996-07-31 | Baker Hughes Incorporated | A measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers |
US6088294A (en) * | 1995-01-12 | 2000-07-11 | Baker Hughes Incorporated | Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction |
US6614360B1 (en) | 1995-01-12 | 2003-09-02 | Baker Hughes Incorporated | Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers |
US5510582A (en) * | 1995-03-06 | 1996-04-23 | Halliburton Company | Acoustic attenuator, well logging apparatus and method of well logging |
GB2300048B (en) * | 1995-04-19 | 1999-08-11 | Halliburton Co | Acoustic noise cancelling apparatus for well logging and method of well logging |
US5691712A (en) * | 1995-07-25 | 1997-11-25 | Schlumberger Technology Corporation | Multiple wellbore tool apparatus including a plurality of microprocessor implemented wellbore tools for operating a corresponding plurality of included wellbore tools and acoustic transducers in response to stimulus signals and acoustic signals |
US5646379A (en) * | 1995-09-13 | 1997-07-08 | Schlumberger Technology Corporation | Attentuator for borehole acoustic waves |
US5852262A (en) * | 1995-09-28 | 1998-12-22 | Magnetic Pulse, Inc. | Acoustic formation logging tool with improved transmitter |
US5687138A (en) * | 1995-10-03 | 1997-11-11 | Schlumberger Technology Corporation | Methods of analyzing stoneley waveforms and characterizing underground formations |
US5753812A (en) * | 1995-12-07 | 1998-05-19 | Schlumberger Technology Corporation | Transducer for sonic logging-while-drilling |
GB9621236D0 (en) * | 1996-10-11 | 1996-11-27 | Schlumberger Ltd | Apparatus and method for borehole seismic exploration |
US5731550A (en) * | 1997-03-07 | 1998-03-24 | Western Atlas International, Inc. | Acoustic dipole well logging instrument |
GB2327957A (en) | 1997-08-09 | 1999-02-10 | Anadrill Int Sa | Method and apparatus for suppressing drillstring vibrations |
US5987385A (en) * | 1997-08-29 | 1999-11-16 | Dresser Industries, Inc. | Method and apparatus for creating an image of an earth borehole or a well casing |
US5886303A (en) * | 1997-10-20 | 1999-03-23 | Dresser Industries, Inc. | Method and apparatus for cancellation of unwanted signals in MWD acoustic tools |
US5894451A (en) * | 1997-10-21 | 1999-04-13 | The United States Of America As Represented By The Secretary Of The Navy | Impulsive snap-through acoustic pulse generator |
US5869755A (en) * | 1997-12-31 | 1999-02-09 | Schlumberger Technology Corporation | Porosity estimation method in carbonate rock |
AU6931598A (en) * | 1998-04-28 | 1999-11-16 | Schlumberger Technology B.V. | Acoustic logging tool |
US6366531B1 (en) | 1998-09-22 | 2002-04-02 | Dresser Industries, Inc. | Method and apparatus for acoustic logging |
US6564899B1 (en) * | 1998-09-24 | 2003-05-20 | Dresser Industries, Inc. | Method and apparatus for absorbing acoustic energy |
US6213250B1 (en) | 1998-09-25 | 2001-04-10 | Dresser Industries, Inc. | Transducer for acoustic logging |
US6429784B1 (en) | 1999-02-19 | 2002-08-06 | Dresser Industries, Inc. | Casing mounted sensors, actuators and generators |
US7028806B2 (en) * | 1999-06-03 | 2006-04-18 | Baker Hughes Incorporated | Acoustic isolator for downhole applications |
US6615949B1 (en) * | 1999-06-03 | 2003-09-09 | Baker Hughes Incorporated | Acoustic isolator for downhole applications |
US6915875B2 (en) * | 1999-06-03 | 2005-07-12 | Baker Hughes Incorporated | Acoustic isolator for downhole applications |
US6102152A (en) * | 1999-06-18 | 2000-08-15 | Halliburton Energy Services, Inc. | Dipole/monopole acoustic transmitter, methods for making and using same in down hole tools |
US6474439B1 (en) * | 2000-03-29 | 2002-11-05 | Schlumberger Technology Corporation | Dipole logging tool |
GB2385921B (en) * | 2000-11-16 | 2004-09-08 | Schlumberger Holdings | Sonic logging tool including receiver and spacer structure |
US6550342B2 (en) * | 2000-11-29 | 2003-04-22 | Weatherford/Lamb, Inc. | Circumferential strain attenuator |
US6643221B1 (en) * | 2001-11-06 | 2003-11-04 | Schlumberger Technology Corporation | Structures and methods for damping tool waves particularly for acoustic logging tools |
US6834743B2 (en) | 2001-12-07 | 2004-12-28 | Haliburton Energy Services, Inc. | Wideband isolator for acoustic tools |
US6782970B2 (en) | 2002-04-25 | 2004-08-31 | Schlumberger Technology Corporation | Acoustic source using a shaftless electrical hammer |
US20060163075A1 (en) * | 2002-06-21 | 2006-07-27 | Wenlin Zhang | Method and apparatus for downhole pipe or casing repair |
US6671224B1 (en) | 2002-08-26 | 2003-12-30 | Schlumberger Technology Corporation | Active reduction of tool borne noise in a sonic logging tool |
US6868036B2 (en) | 2002-11-08 | 2005-03-15 | Schlumberger Technology Corporation | Oil well acoustic logging tool with baffles forming an acoustic waveguide |
US7195069B2 (en) * | 2003-06-26 | 2007-03-27 | Weatherford/Lamb, Inc. | Method and apparatus for backing off a tubular member from a wellbore |
US7513147B2 (en) * | 2003-07-03 | 2009-04-07 | Pathfinder Energy Services, Inc. | Piezocomposite transducer for a downhole measurement tool |
US6995500B2 (en) * | 2003-07-03 | 2006-02-07 | Pathfinder Energy Services, Inc. | Composite backing layer for a downhole acoustic sensor |
US7075215B2 (en) * | 2003-07-03 | 2006-07-11 | Pathfinder Energy Services, Inc. | Matching layer assembly for a downhole acoustic sensor |
US7036363B2 (en) * | 2003-07-03 | 2006-05-02 | Pathfinder Energy Services, Inc. | Acoustic sensor for downhole measurement tool |
US20050030036A1 (en) * | 2003-08-06 | 2005-02-10 | Baker Hughes Incorporated | Side entry leak protection for sondes |
US7207397B2 (en) * | 2003-09-30 | 2007-04-24 | Schlumberger Technology Corporation | Multi-pole transmitter source |
US7367392B2 (en) * | 2004-01-08 | 2008-05-06 | Schlumberger Technology Corporation | Wellbore apparatus with sliding shields |
US7364007B2 (en) * | 2004-01-08 | 2008-04-29 | Schlumberger Technology Corporation | Integrated acoustic transducer assembly |
US7460435B2 (en) * | 2004-01-08 | 2008-12-02 | Schlumberger Technology Corporation | Acoustic transducers for tubulars |
US7216737B2 (en) * | 2004-02-03 | 2007-05-15 | Schlumberger Technology Corporation | Acoustic isolator between downhole transmitters and receivers |
US7334661B2 (en) * | 2004-02-05 | 2008-02-26 | Schlumberger Technology Corporation | Acoustic logging tool sleeve |
US20050194201A1 (en) * | 2004-03-03 | 2005-09-08 | Tenghamn Stig R.L. | Particle motion sensor for marine seismic sensor streamers |
US7926614B2 (en) * | 2004-03-03 | 2011-04-19 | Pgs Americas, Inc. | Particle motion sensor mounting for marine seismic sensor streamers |
US6957572B1 (en) | 2004-06-21 | 2005-10-25 | Schlumberger Technology Corporation | Apparatus and methods for measuring mud slowness in a borehole |
US7086286B1 (en) * | 2005-06-09 | 2006-08-08 | General Electric Company | Transducer holder and nozzle |
US7591343B2 (en) * | 2005-08-26 | 2009-09-22 | Halliburton Energy Services, Inc. | Apparatuses for generating acoustic waves |
US7411864B2 (en) * | 2005-09-23 | 2008-08-12 | Probe Technology Services, Inc. | Method for processing signals in a cement bong logging tool |
US7372777B2 (en) * | 2005-09-23 | 2008-05-13 | Probe Technology Services, Inc. | Sonic instrumentation apparatus and method for cement bond logging |
US7414918B2 (en) * | 2005-09-23 | 2008-08-19 | Probe Technology Services, Inc. | Method for normalizing signals in a cement bond logging tool |
US7471591B2 (en) * | 2005-12-21 | 2008-12-30 | Precision Energy Services, Inc. | Method and apparatus for azimuthal logging of shear waves in boreholes using optionally rotatable transmitter and receiver assemblies |
US7623412B2 (en) * | 2006-03-07 | 2009-11-24 | Schlumberger Technology Corporation | Anisotropy measurement while drilling |
US7382684B2 (en) * | 2006-06-13 | 2008-06-03 | Seispec, L.L.C. | Method for selective bandlimited data acquisition in subsurface formations |
US8467266B2 (en) * | 2006-06-13 | 2013-06-18 | Seispec, L.L.C. | Exploring a subsurface region that contains a target sector of interest |
GB2444077B (en) * | 2006-11-23 | 2011-07-27 | Reeves Wireline Tech Ltd | Acoustic isolator section |
US7587936B2 (en) * | 2007-02-01 | 2009-09-15 | Smith International Inc. | Apparatus and method for determining drilling fluid acoustic properties |
US7909094B2 (en) | 2007-07-06 | 2011-03-22 | Halliburton Energy Services, Inc. | Oscillating fluid flow in a wellbore |
US8279713B2 (en) * | 2007-07-20 | 2012-10-02 | Precision Energy Services, Inc. | Acoustic transmitter comprising a plurality of piezoelectric plates |
US7864629B2 (en) * | 2007-11-20 | 2011-01-04 | Precision Energy Services, Inc. | Monopole acoustic transmitter comprising a plurality of piezoelectric discs |
US20100020638A1 (en) * | 2008-07-24 | 2010-01-28 | Precision Energy Services, Inc. | Monopole acoustic transmitter ring comprising piezoelectric material |
US8347505B2 (en) * | 2008-10-13 | 2013-01-08 | Baker Hughes Incorporated | Method for fabricating a cylindrical spring by compressive force |
JP4724792B2 (ja) * | 2008-10-16 | 2011-07-13 | 千栄 太田 | 落とし蓋 |
US8117907B2 (en) * | 2008-12-19 | 2012-02-21 | Pathfinder Energy Services, Inc. | Caliper logging using circumferentially spaced and/or angled transducer elements |
JP2013508737A (ja) * | 2009-10-26 | 2013-03-07 | シュルンベルジェ ホールディングス リミテッド | 穿孔時記録音響計測のための装置 |
WO2013172837A1 (en) | 2012-05-17 | 2013-11-21 | Halliburton Energy Services, Inc. | Variable stiffness downhole tool housing |
US20140169129A1 (en) * | 2012-12-18 | 2014-06-19 | Schlumberger Technology Corporation | Downhole Receiver Systems and Methods for Low Frequency Seismic Investigations |
AU2013270498A1 (en) * | 2012-12-21 | 2014-07-10 | Cgg Services Sa | Volumetric and non-volumetric sources-based seismic survey and method |
US10082020B2 (en) * | 2014-10-24 | 2018-09-25 | Halliburton Energy Services, Inc. | Acoustic dipole piston transmitter |
US10001574B2 (en) | 2015-02-24 | 2018-06-19 | Amphenol (Maryland), Inc. | Hermetically sealed hydrophones with very low acceleration sensitivity |
RU2609440C1 (ru) * | 2015-10-07 | 2017-02-01 | Общество с Ограниченной Ответственностью "ТНГ-Групп" | Изолятор автономного прибора акустического каротажа |
GB2604059B (en) * | 2019-12-04 | 2024-04-03 | Halliburton Energy Services Inc | Bi-directional acoustic telemetry system |
US11512586B2 (en) | 2020-10-06 | 2022-11-29 | Halliburton Energy Services, Inc. | Logging while drilling tool |
US12032113B2 (en) * | 2022-01-03 | 2024-07-09 | Halliburton Energy Services, Inc. | Through tubing cement evaluation based on rotatable transmitter and computational rotated responses |
Family Cites Families (33)
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---|---|---|---|---|
US3277436A (en) * | 1956-02-09 | 1966-10-04 | James W Fitzgerald | Hollow electro-acoustic transducer |
US3191141A (en) * | 1961-05-16 | 1965-06-22 | Schlumberger Well Surv Corp | Logging tool housing with acoustic delay |
US3161256A (en) * | 1961-05-16 | 1964-12-15 | Schiumberger Well Surveying Co | Acoustic logging tools |
US3213415A (en) * | 1962-08-27 | 1965-10-19 | Schlumberger Well Surv Corp | Pressure equalizing arrangement for acoustic logging |
US3332057A (en) * | 1965-01-28 | 1967-07-18 | Sonic Engineering Company | Single cardioid wave detector for seismic signals |
US3364463A (en) * | 1966-07-01 | 1968-01-16 | Schlumberger Technology Corp | Well logging tool |
US3381267A (en) * | 1966-07-26 | 1968-04-30 | Schlumberger Technology Corp | Well logging tool |
US3504757A (en) * | 1968-11-20 | 1970-04-07 | Schlumberger Technology Corp | Acoustic well-logging apparatus |
US3583677A (en) * | 1969-08-28 | 1971-06-08 | Electro Sonic Oil Tools Inc | Electro-mechanical transducer for secondary oil recovery |
US3978939A (en) * | 1971-05-24 | 1976-09-07 | Schlumberger Technology Corporation | Acoustic well logging methods and apparatus |
US4020452A (en) * | 1971-05-24 | 1977-04-26 | Schlumberger Technology Corporation | Apparatus for use in investigating earth formations |
JPS54107401A (en) * | 1978-02-09 | 1979-08-23 | Nagarou Kozaki | Vibrating method for s wave detecting layer |
US4312052A (en) * | 1980-04-21 | 1982-01-19 | Shell Oil Company | Method for identifying weak sands |
US4383308A (en) * | 1980-12-29 | 1983-05-10 | Mobil Oil Corporation | Acoustic well logging device for detecting shear and compressional waves |
MA19839A1 (fr) * | 1982-07-06 | 1984-04-01 | Exxon Production Research Co | Appareil et procede de diagraphie acoustique et procede de reduction du bruit du aux ondes de compression et de stoneley . |
DE3309068C2 (de) * | 1983-03-14 | 1987-04-23 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Piezoelektrischer Schwingungserreger |
US4516228A (en) * | 1983-08-25 | 1985-05-07 | Mobil Oil Corporation | Acoustic well logging device for detecting compressional and shear waves |
US4682308A (en) * | 1984-05-04 | 1987-07-21 | Exxon Production Research Company | Rod-type multipole source for acoustic well logging |
US4685091A (en) * | 1984-05-10 | 1987-08-04 | Exxon Production Research Co. | Method and apparatus for acoustic well logging |
US4803666A (en) * | 1984-07-20 | 1989-02-07 | Standard Oil Company (Indiana), Now Amoco Corp. | Multisource multireceiver method and system for geophysical exploration |
US4817061A (en) * | 1984-07-20 | 1989-03-28 | Amoco Corporation | Seismic surveying technique for the detection of azimuthal variations in the earth's subsurface |
US4903244A (en) * | 1984-07-20 | 1990-02-20 | Standard Oil Company (Now Amoco Corporation) | Multisource multireceiver method and system for geophysical exploration |
US4704708A (en) * | 1985-10-04 | 1987-11-03 | Mobil Oil Corporation | Acoustic borehole logging tool |
GB8528821D0 (en) * | 1985-11-22 | 1985-12-24 | Shell Int Research | Acoustic logging device |
CA1268850A (en) * | 1986-02-19 | 1990-05-08 | Leo J. Anderson | Downhole casing inspection system |
CA1294894C (en) * | 1986-05-23 | 1992-01-28 | Claude Campbell Sims | Acoustic transducer for a borehole logging tool |
US4794572A (en) * | 1986-09-30 | 1988-12-27 | Amoco Corporation | Acoustic well logging method and system for obtaining a measure of formation anisotropy |
US4951267A (en) * | 1986-10-15 | 1990-08-21 | Schlumberger Technology Corporation | Method and apparatus for multipole acoustic logging |
US4933913A (en) * | 1986-10-30 | 1990-06-12 | Amoco Corporation | Method of seismic surveying for resolving the effects of formation anisotropy in shear wave reflection seismic data |
US4888743A (en) * | 1986-10-30 | 1989-12-19 | Amoco Corporation | Method of seismic surveying for resolving the effects of formation anisotropy in shear wave reflection seismic data |
US4813028A (en) * | 1987-07-07 | 1989-03-14 | Schlumberger Technology Corporation | Acoustic well logging method and apparatus |
US4832148A (en) * | 1987-09-08 | 1989-05-23 | Exxon Production Research Company | Method and system for measuring azimuthal anisotropy effects using acoustic multipole transducers |
US4912979A (en) * | 1987-10-14 | 1990-04-03 | Amoco Corporation | Method and apparatus for detecting and measuring elastic anisotropy |
-
1989
- 1989-03-17 US US07/325,405 patent/US5036945A/en not_active Expired - Lifetime
-
1990
- 1990-02-15 US US07/480,435 patent/US5043952A/en not_active Expired - Lifetime
- 1990-03-12 MA MA22036A patent/MA21772A1/fr unknown
- 1990-03-13 OA OA59751A patent/OA09188A/xx unknown
- 1990-03-16 IE IE98390A patent/IE67788B1/en not_active IP Right Cessation
- 1990-03-16 NO NO901235A patent/NO301663B1/no not_active IP Right Cessation
- 1990-03-16 DK DK90400726.7T patent/DK0388316T3/da active
- 1990-03-16 EP EP90400726A patent/EP0388316B1/en not_active Expired - Lifetime
- 1990-03-16 AU AU51427/90A patent/AU617043B2/en not_active Expired
- 1990-03-16 AT AT90400726T patent/ATE120556T1/de not_active IP Right Cessation
- 1990-03-16 ZA ZA902049A patent/ZA902049B/xx unknown
- 1990-03-16 MY MYPI90000410A patent/MY105539A/en unknown
- 1990-03-16 JP JP2066752A patent/JPH0681877B2/ja not_active Expired - Fee Related
- 1990-03-16 MX MX019932A patent/MX171789B/es unknown
- 1990-03-16 DE DE69018114T patent/DE69018114D1/de not_active Expired - Lifetime
- 1990-03-19 BR BR909001263A patent/BR9001263A/pt not_active IP Right Cessation
- 1990-03-19 TN TNTNSN90031A patent/TNSN90031A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
MX171789B (es) | 1993-11-15 |
DE69018114D1 (de) | 1995-05-04 |
ZA902049B (en) | 1991-03-27 |
US5043952A (en) | 1991-08-27 |
JPH0681877B2 (ja) | 1994-10-19 |
NO901235L (no) | 1990-09-18 |
DK0388316T3 (da) | 1995-08-14 |
ATE120556T1 (de) | 1995-04-15 |
NO901235D0 (no) | 1990-03-16 |
BR9001263A (pt) | 1991-03-26 |
EP0388316B1 (en) | 1995-03-29 |
TNSN90031A1 (fr) | 1991-03-05 |
US5036945A (en) | 1991-08-06 |
JPH0355392A (ja) | 1991-03-11 |
AU617043B2 (en) | 1991-11-14 |
IE900983L (en) | 1990-09-17 |
IE67788B1 (en) | 1996-04-17 |
EP0388316A3 (en) | 1991-11-13 |
EP0388316A2 (en) | 1990-09-19 |
MY105539A (en) | 1994-10-31 |
AU5142790A (en) | 1990-10-18 |
NO301663B1 (no) | 1997-11-24 |
MA21772A1 (fr) | 1990-10-01 |
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