Fumio Hama

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Heat-sensitive recording material
- Patent number 4,731,353
- Issue date Mar 15, 1988
- Kanzaki Paper Manufacturing Company, Limited
- Fumio Hama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat sensitive recording sheets containing sulfone derivatives
- Patent number 4,729,984
- Issue date Mar 8, 1988
- Kanzaki Paper Manufacturing Co., Ltd.
- Fumio Hama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive recording material
- Patent number 4,633,277
- Issue date Dec 30, 1986
- Kanzaki Paper Manufacturing Co., Ltd.
- Toshitake Suzuki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Hydroxydiphenyl sulfone derivative and heat-sensitive recording mat...
- Patent number 4,612,557
- Issue date Sep 16, 1986
- Kanzaki Paper Manufacturing Co. Ltd.
- Fumio Hama
- C07 - ORGANIC CHEMISTRY