Patent Assignment
Reel/Frame 004449/0607
Assignment of Assignors Interest.
Recorded: 1985-08-22
Pages: 1
Assignee
NALCO CHEMICAL COMPANY A DE CORP
OAK BROOK, ILLINOIS
Covered Property
(1)
Upgrading Heavy Gas Oils
Patent:
4,589,979 →
Application:
06/768,530 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.