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J. Michael Grasshoff
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Hudson, MA, US
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last 30 patents
Information
Patent Grant
Copolymers having pendant functional thymine groups
Patent number
5,708,106
Issue date
Jan 13, 1998
Polaroid Corporation
J. Michael Grasshoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method of imaging using a polymeric photoresist having pendant viny...
Patent number
5,616,451
Issue date
Apr 1, 1997
Polaroid Corporation
J. Michael Grasshoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Vinylbenzyl thymine monomers
Patent number
5,455,349
Issue date
Oct 3, 1995
Polaroid Corporation
J. Michael Grasshoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Copolymeric mordants and photographic products and processes contai...
Patent number
5,395,731
Issue date
Mar 7, 1995
Polaroid Corporation
J. Michael Grasshoff
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Copolymeric mordants and photographic products and processes contai...
Patent number
4,794,067
Issue date
Dec 27, 1988
Polaroid Corporation, Patent Dept.
J. Michael Grasshoff
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photographic uses of polyvinyl-phenylmercapto-tetrazoles
Patent number
4,134,768
Issue date
Jan 16, 1979
Polaroid Corporation
J. Michael Grasshoff
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Polymerization of sulfur containing compounds in aqueous media util...
Patent number
4,021,417
Issue date
May 3, 1977
Polaroid Corporation
J. Michael Grasshoff
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Quinone methide photograhpic reagent precursors
Patent number
3,993,661
Issue date
Nov 23, 1976
Polaroid Corporation
J. Michael Grasshoff
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Preparation of N,N-dialkyl p-vinyl anilines
Patent number
3,984,472
Issue date
Oct 5, 1976
Polaroid Corporation
J. Michael Grasshoff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Novel polymeric derivatives of tetrazole-5-thiols and their metal a...
Patent number
3,936,401
Issue date
Feb 3, 1976
Polaroid Corporation
J. Michael Grasshoff
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Benzylthiosulfuric acid salts
Patent number
3,932,480
Issue date
Jan 13, 1976
Polaroid Corporation
J. Michael Grasshoff
C07 - ORGANIC CHEMISTRY