Patent Assignment
Reel/Frame 005139/0270
Assignment of Assignors Interest.
Recorded: 1989-09-13
Pages: 2
Assignor
CHEUNG, HARRY
Executed: 1989-03-10
Assignee
UNION CARBIDE CORPORATION MANUFACTURERS
OLD RIDGEBURY RD., A CORP. OF NY, DANBURY, CONNECTICUT, 06817
Covered Property
(1)
Cryogenic Rectification Process for Producing Ultra High Purity Nitrogen
Patent:
4,902,321 →
Application:
07/324,444 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Mar 12, 1991
From: UNION CARBIDE CORPORATION, A CORP. OF NY
To: UNION CARBIDE INDUSTRIAL GASES INC., A CORP. OF DE
Reel/Frame 005626/0511 →
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 →