Patent Assignment
Reel/Frame 005435/0649
Change of Name
Recorded: 1990-09-17
Pages: 5
Assignor
PHILIP A. HUNT CHEMICAL CORPORATION
Executed: 1986-02-27
Assignee
OLIN HUNT SPECIALTY PRODUCTS INC.
CHESHIRE, CONNECTICUT, 06410
Covered Properties
(4)
Positive Novolak Photoresist Compositions
Patent:
4,377,631 →
Application:
06/275,883 →
Positive Photoresist Composition with Cresol-Formaldehyde Novolak Resins
Patent:
4,529,682 →
Application:
06/403,935 →
Positive Photoresist with Cresol-Formaldehyde Novolak Resin and Photosensitive Naphthoquinone Diazide
Patent:
4,587,196 →
Application:
06/666,743 →
Method of Forming a Resist Pattern by Radiation Exposure of Positie- Working Resist Coating Comprising Dye and a Trihydroxybenzophenone Comound and Subsequent Aqueous Alkaline Development
Patent:
4,650,745 →
Application:
06/878,736 →
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Jun 22, 1981
From: TOUKHY, MEDHAT A.; KLAWANSKY, LEO
To: PHILIP A HUNT CHEMICAL CORPORATION
Reel/Frame 003896/0915 →
Assignment of Assignors Interest.
Jan 14, 1985
From: TOUKHY, MEDHAT A.
To: PHILIP A. HUNT CHEMICAL CORPORATION
Reel/Frame 004349/0054 →
Assignment of Assignors Interest.
Jan 14, 1985
From: TOUKHY, MEDHAT A.
To: PHILIP A. HUNT CHEMCAL CORPORATION
Reel/Frame 004349/0632 →
Change of Name Effective Date: Dec. 12, 1990
Mar 14, 1991
From: OLIN HUNT SPECIALTY PRODUCTS INC.
To: OCG MICROELECTRONIC MATERIALS, INC.
Reel/Frame 005630/0516 →
Change of Name
Apr 18, 1997
From: OCG MICROELECTRONIC MATERIALS, INC.
To: OLIN MICROELECTRONIC CHEMICALS, INC.
Reel/Frame 008495/0994 →