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Koichiro Hashimoto
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Chigasaki, JP
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last 30 patents
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Patent Grant
Negative-working photosensitive composition comprising a diphenylam...
Patent number
4,737,438
Issue date
Apr 12, 1988
Tokyo Ohka Kogyo Co., Ltd.
Naoki Ito
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Aqueous developer solution for positive type photoresists with tetr...
Patent number
4,610,953
Issue date
Sep 9, 1986
Tokyo Ohka Kogyo Co., Ltd.
Koichiro Hashimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY