Shirushi Yamamoto

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Isehara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of forming a positive resist pattern in photoresist of o-nap...
- Patent number 4,797,348
- Issue date Jan 10, 1989
- Tokyo Ohka Kogyo Co., Ltd.
- Yoichi Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information 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