Patent Assignment
Reel/Frame 009521/0051
Assignment of Assignor's Interest
Recorded: 1998-10-12
Pages: 4
Assignors
LEHR, DOUGLAS J.
Executed: 1998-06-24
WHITELY, T.G.
Executed: 1998-03-25
MARTIN, MICHAEL A.
Executed: 1998-04-08
ATCHLEY, DENNIS
Executed: 1998-04-08
Assignee
BJ SERVICES COMPANY
5500 NORTHWEST CENTRAL DRIVE, HOUSTON, TEXAS, 77092
Covered Property
(1)
Apparatus and Method for Stimulating Multiple Producion Zones in Wellbore
Patent:
6,006,838 →
Application:
09/169,910 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 28, 2015
From: WESTERN ATLAS INC.
To: BAKER HUGHES INCORPORATED
Reel/Frame 037367/0022 →
Assignment of Assignor's Interest
Dec 28, 2015
From: BAKER HUGHES INCORPORATED
To: BAKER HUGHES OILFIELD OPERATIONS, INC.
Reel/Frame 037368/0347 →
Change of Name
Jun 27, 2017
From: BAKER HUGHES OILFIELD OPERATIONS, INC.
To: BAKER HUGHES OILFIELD OPERATIONS LLC
Reel/Frame 043011/0391 →