Patent Assignment
Reel/Frame 009034/0492
Assignment of Assignor's Interest
Recorded: 1997-12-22
Pages: 7
Assignors
ODOM, RICHARD C.
Executed: 1997-12-02
STREETER, RICHARD W.
Executed: 1997-12-08
WILSON, ROBERT D.
Executed: 1997-12-03
Assignee
COMPUTALOG RESEARCH, INC.
500 WINSCOTT ROAD, FORT WORTH, TEXAS, 76126
Covered Property
(1)
Formation Density Measurement Utilizing Pulsed Neutrons
Patent:
5,900,627 →
Application:
08/878,545 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Apr 12, 2005
From: COMPUTALOG RESEARCH, INC.
To: COMPUTALOG USA, INC.
Reel/Frame 016446/0373 →
Change of Name
Jul 1, 2005
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017275/0188 →
Change of Name
Aug 3, 2005
From: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
To: PRECISION ENERGY SERVICES, LTD.
Reel/Frame 016345/0078 →
Change of Name
Feb 7, 2006
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017230/0980 →
Assignment of Assignor's Interest
Apr 21, 2006
From: PRECISION ENERGY SERVICES LTD.
To: PRECISION ENERGY SERVICES ULC
Reel/Frame 017507/0031 →
Assignment of Assignor's Interest
Apr 26, 2006
From: PRECISION ENERGY SERVICES ULC
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 017527/0191 →