Keiichi Hayashi

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Funabashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Photosensitive colored resin composition, colored image formation m...
- Patent number 5,639,579
- Issue date Jun 17, 1997
- Toyo Gosei Kogyo Co., Ltd.
- Keiichi Hayashi
- G02 - OPTICS
Information Patent Grant
Contrast-enhancing agent for photolithography
- Patent number 4,925,770
- Issue date May 15, 1990
- Director General of Agency of Industrial Science and Technology
- Kunihiro Ichimura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY