IP Library › Assignment 004257/0610
Patent Assignment
Reel/Frame 004257/0610

Assignment of Assignors Interest.

Recorded: 1984-05-17 Pages: 2
Assignors
CHOE, EUI W.
Executed: 1983-03-16
CONCIATORI, ANTHONY B.
Executed: 1983-03-16
WARD, BENNETT C.
Executed: 1983-03-13
Assignee
Covered Property (1)
Two Stage High Molecular Weight Polybenzimidazole Production with Phosphorus Containing Catalyst
Patent: 4,463,167 →
Application: 06/477,093 →
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Nov 24, 1998
From: HOECHST CELANESE CORPORATION
To: HOECHST AKTIENGESELLSCHAFT
Reel/Frame 009534/0147 →