Patent Assignment
Reel/Frame 006790/0696
Assignment of Assignor's Interest
Recorded: 1993-12-07
Pages: 3
Assignee
UNICHEM INTERNATIONAL INC.
3400 RESEARCH FOREST DRIVE, HOUSTON, TEXAS, 77381
Covered Property
(1)
Stabilized Ammonium Polysulfide Solutions and Process Utilizing Same
Patent:
5,376,749 →
Application:
08/131,720 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 28, 1994
From: UNICHEM INTERNATIONAL, INC.
To: WESTERN COMPANY OF NORTH AMERICA, THE
Reel/Frame 006877/0327 →
Assignment of Assignor's Interest
Jun 19, 1995
From: WESTERN COMPANY OF NORTH AMERICA, THE
To: BJ SERVICES COMPANY, U.S.A.
Reel/Frame 007526/0440 →
Assignment of Assignor's Interest
Oct 31, 2001
From: BJ SERVICES COMPANY, U.S.A.
To: BJ SERVICES COMPANY
Reel/Frame 012333/0812 →