IP Library Assignment 006794/0612
Patent Assignment
Reel/Frame 006794/0612

Assignment of Assignor's Interest

Recorded: 1992-10-19 Pages: 3
Assignors
WEHNER, WOLFGANG
Executed: 1990-10-29
WIRTH, HERMANN O.
Executed: 1990-10-29
Assignee
CIBA-GEIGY CORPORATION
444 SAW MILL RIVER ROAD, ARDSLEY, NEW YORK, 10502
Covered Property (1)
Beta-Keto Esters as Stabilisers for Chlorinated Polymers
Patent: 5,177,135 →
Application: 07/621,497 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Mar 17, 1997
From: CIBA-GEIGY CORPORATION
To: CIBA SPECIALTY CHEMICALS CORPORATION
Reel/Frame 008412/0471 →
Assignment of Assignor's Interest Oct 26, 1998
From: CIBA SPECIALTY CHEMICALS CORPORATION
To: WITCO VINYL ADDITIVES GMBH
Reel/Frame 009833/0189 →