Patent Assignment
Reel/Frame 013578/0444
Assignment of Assignor's Interest
Recorded: 2002-12-16
Pages: 4
Assignor
CAMCO INTERNATIONAL LIMITED
Executed: 2002-11-29
Assignee
SCHLUMBERGER WCP LIMITED
CLOUGHFERN AVENUE, MONKSTOWN, NEWTOWNABBEY ANTRIM, UNITED KINGDOM
Covered Properties
(9)
Downhole Unit for Use in Boreholes in a Subsurface Formation
Patent:
5,971,085 →
Application:
08/965,334 →
Steerable Rotary Drilling Systems
Patent:
6,089,332 →
Application:
09/004,592 →
Rotary Seal for Directional Drilling Tools
Cable Protector and Support
Control Method for Use with a Steerable Drilling System
Patent:
6,601,658 →
Application:
09/869,686 →
Measurement of Curvature of a Subsurface Borehole, and Use of Such Measurement in Directional Drilling
Two Stage Downhole Drilling Fluid Filter
Hybrid rotary steerable system
Application:
60/319,035 →
Recalibration of downhole sensors
Application:
60/319,241 →
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 1, 1998
From: BARR, JOHN D.; CLEGG, JOHN M.; MOTION, WILLIAM C.
To: CAMCO INTERNATIONAL (UK) LIMITED
Reel/Frame 009240/0856 →
Assignment of Assignor's Interest
Oct 23, 1998
From: COLEBROOK, MARK
To: CAMCO INTERNATIONAL (UK) LIMITED
Reel/Frame 009543/0155 →
Assignment of Assignor's Interest
Feb 23, 2001
From: BLANE, DAVID; BAXTER, IAIN
To: CAMCO INTERNATIONAL (UK) LTD
Reel/Frame 011560/0036 →