IP Library › Assignment 005660/0644
Patent Assignment
Reel/Frame 005660/0644

Assignment of Assignors Interest.

Recorded: 1991-04-10 Pages: 2
Assignors
LANGFELD, HORST
Executed: 1988-08-15
PUEBLA, CLAUDIO
Executed: 1988-08-10
SEREINIG, GUNTER
Executed: 1988-08-10
Assignee
CIBA-GEIGY AG, A COMPANY OF THE SWISS CONFEDERATION
KLYBECKSTRASSE 141, 4002 BASLE, SWITZERLAND
Covered Property (1)
Process for the Preparation of Azo Dyes by Carrying Out Coupling in the Presence of an Alkali Metal Chloride and Ammoninium Chloride
Patent: 5,026,830 →
Application: 07/237,474 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest. Apr 10, 1991
From: CIBA-GEIGY AG, A COMPANY OF SWITZERLAND
To: CIBA-GEIGY CORPORATION, A NY CORP.
Reel/Frame 005660/0646 →
Assignment of Assignor's Interest Mar 17, 1997
From: CIBA-GEIGY CORPORATION
To: CIBA SPECIALTY CHEMICALS CORPORATION
Reel/Frame 008454/0001 →