IP Library Assignment 004466/0077
Patent Assignment
Reel/Frame 004466/0077

Assignment of Assignors Interest.

Recorded: 1985-09-23 Pages: 2
Covered Property (1)
Process for the Production of Polybenzimidazole Ultrafiltration Membranes
Patent: 4,693,824 →
Application: 06/778,994 →
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 →