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Tatsuya Hashiguchi
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Chigasaki, JP
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last 30 patents
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Patent Grant
Photoresist composition
Patent number
5,800,964
Issue date
Sep 1, 1998
Tokyo Ohka Kogyo Co., Ltd.
Mitsuru Sato
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Positive photoresist compositions and multilayer resist materials u...
Patent number
5,728,504
Issue date
Mar 17, 1998
Tokyo Ohka Kogyo Co., Ltd.
Hiroshi Hosoda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Cyanooxime sulfonate compound
Patent number
5,714,625
Issue date
Feb 3, 1998
Tokyo Ohka Kogyo Co., Ltd.
Hideo Hada
C07 - ORGANIC CHEMISTRY