Patent Assignment
Reel/Frame 005040/0831
Assignment of Assignors Interest.
Recorded: 1989-02-10
Pages: 1
Assignor
BARTMANN, EKKEHARD
Executed: 1989-01-19
Assignee
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
DARMSTADT, D-6100, GERMANY
Covered Property
(1)
Process for the Preparation of 1,2-Disulfone Compounds
Patent:
4,980,508 →
Application:
07/308,483 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Mar 10, 1992
From: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
To: CIBA-GEIGY CORPORATION
Reel/Frame 006331/0025 →
Assignment of Assignor's Interest
Feb 20, 1996
From: CIBA-GEIGY CORPORATION
To: OCG MICROELECTRONIC MATERIALS, INC.
Reel/Frame 007815/0833 →
Change of Name
Apr 18, 1997
From: OCG MICROELECTRONIC MATERIALS, INC.
To: OLIN MICROELECTRONIC CHEMICALS, INC.
Reel/Frame 008495/0994 →