IP Library Assignment 023529/0431
Patent Assignment
Reel/Frame 023529/0431

Assignment of Assignor's Interest

Recorded: 2009-11-17 Pages: 7
Assignors
PISKLAK, THOMAS J.
Executed: 2009-11-10
STEVENS, RICHARD F., JR.
Executed: 2009-11-10
QU, QI
Executed: 2009-11-10
MORILLO, ELIZABETH G.
Executed: 2009-11-10
Assignee
BJ SERVICES COMPANY
4601 WESTWAY PARK BOULEVARD, HOUSTON, TEXAS, 77041
Covered Property (1)
Light-Weight Proppant from Heat-Treated Pumice
Patent: 8,796,188 →
Application: 12/619,828 →
Publication: US 2011/0118155
Related Assignments (3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Sep 30, 2010
From: BJ SERVICES COMPANY
To: BSA ACQUISTION LLC
Reel/Frame 025072/0522 →
Change of Name Sep 30, 2010
From: BSA ACQUISTION LLC
To: BJ SERVICES COMPANY LLC
Reel/Frame 025074/0184 →
Assignment of Assignor's Interest Jun 29, 2011
From: BJ SERVICES COMPANY LLC
To: BAKER HUGHES INCORPORATED
Reel/Frame 026518/0727 →