Patent Assignment
Reel/Frame 009687/0028
Assignment of Assignor's Interest
Recorded: 1998-12-29
Pages: 2
Assignee
PHILLIPS PETROLEUM COMPANY, A CORP. OF DELAWARE
BARTLESVILLE, OKLAHOMA, 74004
Covered Property
(1)
Method and Apparatus for Controlling Counter Current
Patent:
6,562,238 →
Application:
09/222,169 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.