IP Library › Assignment 036672/0586
Patent Assignment
Reel/Frame 036672/0586

Assignment of Assignor's Interest

Recorded: 2015-09-28 Pages: 5
Assignor
COUPLER DEVELOPMENTS LIMITED
Executed: 2015-07-10
Assignee
NATIONAL OILWELL VARCO, L.P.
7909 PARKWOOD CIRCLE DR, HOUSTON, TEXAS, 77036
Covered Properties (10)
Continuous Circulation Drilling Method
Patent: 6,315,051 →
Application: 09/284,449 →
Drilling Methods and Apparatus
Patent: 6,688,394 →
Application: 09/703,178 →
Drilling Method
Patent: 6,591,916 →
Application: 09/807,476 →
Continuous Circulation Drilling Method
Patent: 6,739,397 →
Application: 10/010,207 →
Publication: US 2002/0157838
Drilling Method
Patent: 7,252,151 →
Application: 10/442,548 →
Publication: US 2003/0234101
Method and Apparatus with Slips Assembly for Coupling Tubulars Without Interruption of Circulation
Patent: 7,252,161 →
Application: 10/483,013 →
Publication: US 2005/0006147
Radially Moving Slips
Patent: 7,395,855 →
Application: 10/510,316 →
Publication: US 2005/0224260
Method and Apparatus for Adding a Tubular to Drill String with Diverter
Patent: 7,726,418 →
Application: 10/576,893 →
Publication: US 2006/0254822
Continuous Circulation Drilling Method
Patent: 7,322,418 →
Application: 10/780,796 →
Publication: US 2004/0159467
Drilling Method
Patent: 7,188,683 →
Application: 10/782,016 →
Publication: US 2004/0159465
Related Assignments (9)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 17, 2000
From: MARIS INTERNATIONAL LIMITED
To: COUPLER DEVELOPMENTS LT'D
Reel/Frame 011228/0301 →
Assignment of Assignor's Interest Oct 19, 2000
From: AYLING, LAURENCE J.
To: MARIS INTERNATIONAL LTD
Reel/Frame 011228/0272 →
Assignment of Assignor's Interest Apr 13, 2001
From: AYLING, LAURENCE J.
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 011762/0394 →
Assignment of Assignor's Interest May 15, 2001
From: MARIS INTERNATIONAL LIMITED
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 011825/0468 →
License Feb 12, 2002
From: COUPLER DEVELOPMENTS LIMITED; MARIS INTERNATIONAL LIMITED
To: VARCO INTERNATIONAL, INC.
Reel/Frame 012676/0577 →
Assignment of Assignor's Interest Nov 28, 2003
From: AYLING, LAWRENCE J.
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 014888/0762 →
Assignment of Assignor's Interest Oct 2, 2004
From: AYLING, LAURENCE J.
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 016748/0346 →
Assignment of Assignor's Interest Aug 7, 2006
From: AYLING, LAURENCE J.
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 018157/0326 →
Assignment of Assignor's Interest Mar 1, 2007
From: AYLING, LAURENCE J.
To: COUPLER DEVELOPMENTS LIMITED
Reel/Frame 018978/0094 →