Patent Assignment
Reel/Frame 004420/0504
Assignment of Assignors Interest.
Recorded: 1984-09-10
Pages: 1
Assignor
HOWELL FREDERICK H.
Executed: 1982-06-02
Assignee
CIBA-GEIGY AG, A COMPANY OF SWITZERLAND
KLYBECKSTRASSE 141, 4002 BASLE, SWITZERLAND
Covered Property
(1)
Hydroquinones
Patent:
4,484,000 →
Application:
06/389,992 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 27, 1996
From: H.A. WHITTEN & COMPANY
To: CIBA-GEIGY SC HOLDING AG
Reel/Frame 008239/0783 →
A Corrective Assignment to Correct Assignee on Rell 8239, Frame 0783.
Sep 2, 1997
From: H.A. WHITTEN & COMPANY
To: CIBA SC HOLDING AG
Reel/Frame 008650/0844 →
Change of Name
Oct 16, 1997
From: CIBA SC HOLDING AG
To: CIBA SPECIALTY CHEMICALS HOLDING INC.
Reel/Frame 008753/0393 →