Kenichi Koseki

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photopolymerizable compositions including squarylium compounds
- Patent number 6,007,965
- Issue date Dec 28, 1999
- Tsuguo Yamaoka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photopolymerizable composition containing an addition polymerizable...
- Patent number 5,756,258
- Issue date May 26, 1998
- Kyowa Hakko Co., Ltd.
- Tsuguo Yamaoka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photopolymerizable composition containing squarylium compound
- Patent number 5,681,685
- Issue date Oct 28, 1997
- Kyowa Hakko Kogyo Co., Ltd.
- Tsuguo Yamaoka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chemical amplification resist composition containing photochemical...
- Patent number 5,527,659
- Issue date Jun 18, 1996
- Kyowa Hakko Kogyo Co., Ltd.
- Tsuguo Yamaoka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Photo polymerization initiator compositions having high sensitivity
- Patent number 4,474,868
- Issue date Oct 2, 1984
- Nippon Oil and Fats Co., Ltd.
- Tsuguo Yamaoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY