IP Library › Assignment 022737/0357
Patent Assignment
Reel/Frame 022737/0357

Assignment of Assignor's Interest

Recorded: 2009-05-27 Pages: 12
Assignor
PATHFINDER ENERGY SERVICES, INC.
Executed: 2008-08-25
Assignee
SMITH INTERNATIONAL, INC.
16740 HARDY ST., HOUSTON, TEXAS, 77032
Covered Properties (2)
Method for Magnetizing Casing String Tubulars
Patent: 7,679,480 →
Application: 12/422,347 →
Publication: US 2009/0195340
Magnetized Casing String Tubulars
Patent: 7,679,481 →
Application: 12/422,355 →
Publication: US 2009/0195339
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest May 27, 2009
From: STENERSON, KENNETH; CEH, LEON; MCELHINNEY, GRAHAM
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022737/0283 →
Assignment of Assignor's Interest Oct 17, 2012
From: SMITH INTERNATIONAL, INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 029143/0015 →