Patent Assignment
Reel/Frame 020797/0890
Assignment of Assignor's Interest
Recorded: 2008-04-14
Pages: 3
Assignor
DAWSON, JEFFREY C.
Executed: 2008-04-04
Assignee
BJ SERVICES COMPANY
4601 WESTWAY PARK BOULEVARD, HOUSTON, TEXAS, 77041
Covered Property
(1)
Method of Treating a Well with Hollow Non-Porous Metallic Spheres
Application:
12/018,050 →
Publication:
US 2008/0179057
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 →