Patent Assignment
Reel/Frame 021538/0437
Assignment of Assignor's Interest
Recorded: 2008-09-16
Pages: 7
Assignors
STEPHENSON, CHRISTOPHER J.
Executed: 2003-08-28
RICKARDS, ALLAN RAY
Executed: 2003-08-28
BRANNON, HAROLD DEAN
Executed: 2003-08-28
GUPTA, D.V. SATYANARAYANA
Executed: 2003-08-28
Assignee
BJ SERVICES COMPANY
4601 WESTWAY PARK BLVD., HOUSTON, TEXAS, 77041
Covered Property
(1)
Method of Treating Subterranean Formations with Porous Particulate Materials
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Nov 2, 2010
From: BJ SERVICES COMPANY
To: BSA ACQUISITION LLC
Reel/Frame 025237/0418 →
Change of Name
Nov 2, 2010
From: BSA ACQUISITION LLC
To: BJ SERVICES COMPANY LLC
Reel/Frame 025237/0458 →
Assignment of Assignor's Interest
Nov 9, 2010
From: BJ SERVICES COMPANY LLC
To: BAKER HUGHES INCORPORATED
Reel/Frame 025337/0305 →
Change of Name
Feb 16, 2022
From: BAKER HUGHES INCORPORATED
To: BAKER HUGHES, A GE COMPANY, LLC
Reel/Frame 059126/0517 →
Change of Name
Mar 8, 2022
From: BAKER HUGHES, A GE COMPANY, LLC
To: BAKER HUGHES HOLDINGS LLC
Reel/Frame 059339/0130 →