Patent Assignment
Reel/Frame 004032/0853
Assignment of Assignors Interest.
Recorded: 1982-06-28
Pages: 1
Assignor
WILLIAMS, DENNIS A.
Executed: 1982-06-18
Assignee
WESTERN COMPANY OF NORTH AMERICA THE, A CORP OF DE.
6100 WESTERN PLACE, P.O. BOX 186, FORT WORTH, TEXAS, 76101
Covered Property
(1)
Crosslinker Composition for High Temperature Hydraulic Fracturing Fluids
Patent:
4,534,870 →
Application:
06/392,602 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
May 22, 1989
From: WESTERN COMPANY OF NORTH AMERICA THE
To: WILMINGTON TRUST COMPANY
Reel/Frame 005122/0589 →
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 →