IP Library › Assignment 004438/0879
Patent Assignment
Reel/Frame 004438/0879

Assignment of Assignors Interest.

Recorded: 1985-08-08 Pages: 2
Assignors
THIGPEN, HUBERT H.
Executed: 1985-06-05
CLOS, RICHARD J.
Executed: 1985-06-21
Assignee
Covered Property (1)
Method of Manufacture for Paraformaldehyde Prills
Patent: 4,550,213 →
Application: 06/625,942 →
Related Assignments (2)
Other recorded transfers of the patent 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 →