Hirofumi Iwamoto

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Omiya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Thermal recording material and novel crystal of bisphenol S derivative
- Patent number 6,114,282
- Issue date Sep 5, 2000
- Nippon Kayaku Kabushiki Kaisha
- Masao Onishi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heat-sensitive recording material
- Patent number 4,956,333
- Issue date Sep 11, 1990
- Nippon Kayaku Kabushiki Kaisha
- Kenichi Kawahara
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS