IP Library › Assignment 004280/0485
Patent Assignment
Reel/Frame 004280/0485

Assignment of Assignors Interest.

Recorded: 1984-07-02 Pages: 1
Assignor
BERG, LLOYD
Executed: 1982-09-24
Assignee
CELANESE CORPORATION
1211 AVENUE OF THE AMERICAS, A CORP OF DE, NEW YORK, NEW YORK, 10036
Covered Properties (2)
Separation of Ethyl Acetate from Methyl Ethyl Ketone by Extractive Distillation
Application: 06/246,488 →
Separation of Ethyl Acetate from Methyl Ethyl Ketone by Extractive Distillation
Patent: 4,470,881 →
Application: 06/424,827 →
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Merger Mar 10, 1989
From: CELANESE CORPORATION, A CORP. OF DE (MERGED INTO)
To: AMERICAN HOECHST CORPORATION, A CORP. OF DE
Reel/Frame 005046/0390 →
Assignment of Assignor's Interest Mar 27, 1998
From: HOECHST CELANESE CORPORATION
To: CELANESE INTERNATIONAL CORPORATION
Reel/Frame 009052/0337 →