Patent Assignment
Reel/Frame 004174/0458
Assignment of Assignors Interest.
Recorded: 1983-09-30
Pages: 1
Assignor
MARTIN, MICHAEL K.
Executed: 1981-12-03
Assignee
SHELL OIL COMPANY A DE CORP
STATELESS
Covered Property
(1)
Dispersant-Vi Improver Product
Patent:
4,427,834 →
Application:
06/332,690 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.