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Transocean的双钻平台专利效力分析，有索要他们中英文专利的同行请私信或回帖。
他们的关于双钻平台的一组美国专利，一共有四条，但是这四条专利在全球主要国家都申请过，因此可以认为它这项技术实施了全球专利保护。
US 6,056,071 A1
Multi Activity Offshore Exploration And/Or Development Drilling Method And Apparatus
05/03/1996
US 6,047,781 A1
Multi Activity Offshore Exploration And/Or Development Drilling Method And Apparatus
05/03/1996
US 6,085,851 A1
Multi Activity Offshore Exploration And/Or Development Drill Method And Apparatus
05/03/1996
US 6,068,069 A1
Multi Activity Offshore Exploration And/Or Development Drilling Method And Apparatus
05/03/1996
分布的国家是：
Country
Publication number
Publication date
Application number
Application date
Description
ARIPO (Africa)
AP1278 A
May 19, 2004
AP19970001164
Jan 27, 1997
Patent
ARIPO (Africa)
AP9701164 A0
Jan 31, 1998
AP19970001164
Jan 27, 1997
Unpublished patent application
AUSTRALIA
AU199718278 A1
Nov 26, 1997
AU19970018278
Jan 27, 1997
Open to public inspection
AUSTRALIA
AU710636 B2
Sep 23, 1999
AU19970018278
Jan 27, 1997
Patent preceeded by A1
BRAZIL
BRPI9706592 A
Dec 28, 1999
BR1997PI06592
Jan 27, 1997
Patent application
CANADA
CA2225755 AA
Dec 24, 1997
CA19972225755
Jan 27, 1997
Patent application laid open
CANADA
CA2225755 C
Jun 11, 2002
CA19972225755
Jan 27, 1997
Patent
CHINA
CN1079483 C
Feb 20, 2002
CN19971090599
Jan 27, 1997
Granted patent
CHINA
CN1194679 A
Sep 30, 1998
CN19971090599
Jan 27, 1997
Unexamined application
GERMANY
DE69718592 D1
Feb 27, 2003
DE19976018592
Jan 27, 1997
Granted EP number in the Bu...
GERMANY
DE69738573 D1
Apr 24, 2008
DE19976038573
Jan 27, 1997
Granted EP number in the Bu...
GERMANY
DE69738573 T2
Mar 26, 2009
DE19976038573T
Jan 27, 1997
Translation of EP patent
DENMARK
DK0836668 T3
May 12, 2003
DK19970903797T
Jan 27, 1997
Translation of EP claims
DENMARK
DK0836668 T4
Mar 1, 2010
DK19970903797T
Jan 27, 1997
Translation of amended EP p...
DENMARK
DK1277913 T3
Jun 30, 2008
DK19970022449T
Jan 27, 1997
Translation of EP claims
EUROPEAN PATENT
EP0836668 A1
Apr 22, 1998
EP19970903797
Jan 27, 1997
Publication of application ...
EUROPEAN PATENT
EP0836668 A4
Aug 5, 1998
EP19970903797
Jan 27, 1997
Supplementary search report
EUROPEAN PATENT
EP0836668 B1
Jan 22, 2003
EP19970903797
Jan 27, 1997
Patent specification
EUROPEAN PATENT
EP0836668 B2
Dec 16, 2009
EP19970903797
Jan 27, 1997
New patent specification
EUROPEAN PATENT
EP1148206 A2
Oct 24, 2001
EP20010114469
Jan 27, 1997
Publication of application ...
EUROPEAN PATENT
EP1148206 A3
Feb 27, 2002
EP20010114469
Jan 27, 1997
Publication of search report
EUROPEAN PATENT
EP1277913 A2
Jan 22, 2003
EP20020022449
Jan 27, 1997
Publication of application ...
EUROPEAN PATENT
EP1277913 A3
Aug 10, 2005
EP20020022449
Jan 27, 1997
Publication of search report
EUROPEAN PATENT
EP1277913 B1
Mar 12, 2008
EP20020022449
Jan 27, 1997
Patent specification
EUROPEAN PATENT
EP1925549 A2
May 28, 2008
EP20080004481
Jan 27, 1997
Publication of application ...
EUROPEAN PATENT
EP1925549 A3
Sep 8, 2010
EP20080004481
Jan 27, 1997
Publication of search report
EUROPEAN PATENT
EP2332822 A2
Jun 15, 2011
EP20100180220
Jan 27, 1997
Publication of application ...
EUROPEAN PATENT
EP2332822 A3
Mar 7, 2012
EP20100180220
Jan 27, 1997
Publication of search report
SPAIN
ES2191820 T3
Sep 16, 2003
ES19970903797T
Jan 27, 1997
Translation of granted Euro...
SPAIN
ES2191820 T5
Apr 21, 2010
ES19970903797T
Jan 27, 1997
Translation of modified Eur...
SPAIN
ES2300409 T3
Jun 16, 2008
ES20020022449T
Jan 27, 1997
Translation of granted Euro...
JAPAN
JP10508270 T2
Aug 18, 1998
JP19970539896T
Jan 27, 1997
Unexamined patent applicati...
JAPAN
JP3002545 B2
Jan 24, 2000
JP19970539896
Jan 27, 1997
Granted patent with an appl...
SOUTH KOREA
KR100302149 B1
Nov 22, 2001
KR19980700012
Jan 3, 1998
Patent specification
SOUTH KOREA
KR19990028714 A
Apr 15, 1999
KR19980700012
Jan 3, 1998
Unexamined patent
MEXICO
MX9800111 A1
Nov 29, 1998
MX19980000111
Jan 7, 1998
Published patent applicatio...
NORWAY
NO20020181 A
Mar 2, 1998
NO20020000181
Jan 14, 2002
Unexamined application open...
NORWAY
NO20020181 A0
Jan 14, 2002
NO20020000181
Jan 14, 2002
Patent application filed
NORWAY
NO20053630 A
Mar 2, 1998
NO20050003630
Jul 26, 2005
Unexamined application open...
NORWAY
NO20053630 A0
Jul 26, 2005
NO20050003630
Jul 26, 2005
Patent application filed
NORWAY
NO20053631 A
Mar 2, 1998
NO20050003631
Jul 26, 2005
Unexamined application open...
NORWAY
NO20053631 A0
Jul 26, 2005
NO20050003631
Jul 26, 2005
Patent application filed
NORWAY
NO20053632 A
Mar 2, 1998
NO20050003632
Jul 26, 2005
Unexamined application open...
NORWAY
NO20053632 A0
Jul 26, 2005
NO20050003632
Jul 26, 2005
Patent application filed
NORWAY
NO313207 B1
Aug 26, 2002
NO19970006037
Dec 22, 1997
Granted patent
NORWAY
NO313207 B3
Aug 26, 2002
NO19970006037
Dec 22, 1997
Granted with admin. limitation
NORWAY
NO322098 B1
Aug 14, 2006
NO20020000181
Jan 14, 2002
Granted patent
NORWAY
NO322098 B3
May 25, 2009
NO20020000181
Jan 14, 2002
Granted with admin. limitation
NORWAY
NO976037 A
Mar 2, 1998
NO19970006037
Dec 22, 1997
Unexamined application open...
NORWAY
NO976037 A0
Dec 22, 1997
NO19970006037
Dec 22, 1997
Patent application filed
NEW ZEALAND
NZ329650 A
Sep 29, 1999
NZ19970329650
Jan 27, 1997
Complete specification acce...
OAPI
OA10649 A
May 5, 2001
OA19970070173
Dec 31, 1997
Patent of invention
PORTUGAL
PT1277913 T
May 13, 2008
PT20020022449T
Jan 27, 1997
Translated EP document
U.S.A.
US6047781 A
Apr 11, 2000
US19980057466
Apr 9, 1998
U.S. patent
U.S.A.
US6056071 A
May 2, 2000
US19990291293
Apr 14, 1999
U.S. patent
U.S.A.
US6068069 A
May 30, 2000
US19990291483
Apr 14, 1999
U.S. patent
U.S.A.
US6085851 A
Jul 11, 2000
US19960642417
May 3, 1996
U.S. patent
VIET NAM
VN2454 A1
Feb 25, 2002
VN19980000004
Jan 3, 1998
Inventor's certificate
在美国法院诉过多家同行，分别是：
Global Marine Incorporated
Noble Corporation
Maersk Incorporated
Stena Drilling Limited
Pacific Drilling SA
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