Patent Assignment
Reel/Frame 020792/0831
Assignment of Assignor's Interest
Recorded: 2008-04-11
Pages: 8
Assignors
STEPHENSON, CHRISTOPHER JOHN
Executed: 2008-04-02
DAWSON, JEFFREY C.
Executed: 2008-04-04
KALFAYAN, LEONARD J.
Executed: 2008-04-02
QU, QI
Executed: 2008-04-02
STOLYAROV, SERGEY
Executed: 2008-04-02
Assignee
BJ SERVICES COMPANY
4601 WESTWAY PARK BOULEVARD, HOUSTON, TEXAS, 77041
Covered Property
(1)
Fracture Acidizing Method Utilizing Reactive Fluids and Deformable Particulates
Application:
12/019,723 →
Publication:
US 2008/0182761
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Jun 17, 2011
From: BJ SERVICES COMPANY
To: BSA ACQUISITION LLC
Reel/Frame 026465/0022 →
Change of Name
Jun 23, 2011
From: BSA ACQUISITION LLC
To: BJ SERVICES COMPANY LLC
Reel/Frame 026498/0356 →
Assignment of Assignor's Interest
Jun 27, 2011
From: BJ SERVICES COMPANY LLC
To: BAKER HUGHES INCORPORATED
Reel/Frame 026508/0854 →