Patent Assignment
Reel/Frame 004815/0832
Assignment of Assignors Interest.
Recorded: 1987-12-24
Pages: 2
Assignor
NELSON, JOYCE K.
Executed: 1987-11-02
Covered Property
(1)
Composite Membranes of Poly (Methyl Methacrylate) Blends, Their Manufacture and Their Use
Patent:
4,919,865 →
Application:
07/117,639 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Dec 26, 1989
From: UNION CARBIDE INDUSTRIAL GASES INC., A CORP. OF DE
To: UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION
Reel/Frame 005206/0425 →
Change of Name Effective on 06/12/1992
Dec 3, 1992
From: UNION CARBIDE INDUSTRIAL GASES TECHNOLOGY CORPORATION
To: PRAXAIR TECHNOLOGY, INC.
Reel/Frame 006337/0037 →