IP Library › Assignment 003854/0015
Patent Assignment
Reel/Frame 003854/0015

Assignment of Assignors Interest.

Recorded: 1981-05-22 Pages: 1
Assignors
SOEHNGEN, JOHN C.,
Executed: 1979-06-21
CHEN JOHN C.
Executed: 1979-06-21
Assignee
CELANESE CORPORATION, A CORP. OF DE.
1211 AVENUE OF THE AMERICAS, NEW YORK, NEW YORK, 10036
Covered Property (1)
Process for Preparing Microporous Hollow Fibers
Patent: 4,290,987 →
Application: 06/054,050 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jan 29, 1998
From: HOECHST CELANESE CORPORATION
To: CELGARD LLC
Reel/Frame 009168/0439 →
Assignment of Assignor's Interest Dec 30, 1999
From: CELGARD LLC
To: CELGARD, INC., A CORP. OF DELAWARE
Reel/Frame 010506/0869 →