Takehiro Sato

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Diphenyl sulfone crosslinking type compounds and recording material...
- Patent number 6,037,308
- Issue date Mar 14, 2000
- Nippon Soda Co., Ltd.
- Takehiro Sato
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fluoran compounds, intermediates and color forming recording materials
- Patent number 5,739,078
- Issue date Apr 14, 1998
- Nippon Soda Co., Ltd.
- Mitsuhiro Yanagita
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Phenethyl alcohol derivative and recording material containing the...
- Patent number 5,463,133
- Issue date Oct 31, 1995
- Nippon Soda Co., Ltd.
- Takehiro Sato
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diphenylsulfone derivatives and heat sensitive recording materials
- Patent number 5,380,887
- Issue date Jan 10, 1995
- Nippon Soda Co., Ltd.
- Takafumi Tohyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diphenylsulfone derivatives and heat sensitive recording materials
- Patent number 5,340,788
- Issue date Aug 23, 1994
- Nippon Soda Co., Ltd.
- Takafumi Tohyama
- C07 - ORGANIC CHEMISTRY