Patent Assignment
Reel/Frame 004475/0122
Assignment of Assignors Interest.
Recorded: 1985-10-25
Pages: 2
Covered Property
(1)
Removal of Iron Fouling in Cooling Water Systems
Application:
06/762,229 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger Effective Date: 12/30/85 State of Incorp. Connecticut
Mar 19, 1986
From: DEARBORN CHEMICAL COMPANY, A CORP. OF CONNECTICUT (MERGED INTO)
To: W. R. GRACE & CO., A CORP OF CONNECTICUT
Reel/Frame 004533/0503 →
Merger
Jun 19, 1986
From: DEARBORN CHEMICAL COMPANY, A CORP. OF DE.
To: W. R. GRACE & CO.
Reel/Frame 004563/0639 →