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Masaharu Hayakawa
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Chiba, JP
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last 30 patents
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Patent Grant
Polyamic acid, polyimide film and liquid crystal aligning film and...
Patent number
5,807,961
Issue date
Sep 15, 1998
Chisso Corporation
Toshiya Sawai
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Diamino compounds and methods for preparing them
Patent number
5,663,440
Issue date
Sep 2, 1997
Chisso Corporation
Toshiya Sawai
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Diamino compounds and their production method and liquid crystal al...
Patent number
5,501,884
Issue date
Mar 26, 1996
Chisso Corporation
Minoru Nakayama
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid crystal alignment film and liquid crystal display element
Patent number
5,447,759
Issue date
Sep 5, 1995
Chisso Corporation
Shizuo Murata
G02 - OPTICS
Information
Patent Grant
Diamino compounds and their production method
Patent number
5,382,688
Issue date
Jan 17, 1995
Chisso Corporation
Minoru Nakayama
C07 - ORGANIC CHEMISTRY