Youichi Ohhira

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Iwaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Solvent for chromogenic dye-precursor material for pressure-sensiti...
- Patent number 4,822,767
- Issue date Apr 18, 1989
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Yoshio Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Solvent for chromogenic dye-precursor material for pressure-sensiti...
- Patent number 4,795,493
- Issue date Jan 3, 1989
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Yoshio Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Solvent for the chromogenic dye-precursor material for a pressure-s...
- Patent number 4,774,136
- Issue date Sep 27, 1988
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Yoshio Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Solvent for chromogenic dye-precursor material for pressure-sensiti...
- Patent number 4,699,658
- Issue date Oct 13, 1987
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Yoshio Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Solvent for chromogenic dye-precursor material for pressure-sensiti...
- Patent number 4,699,659
- Issue date Oct 13, 1987
- Kureha Kagaku Kogyo Kabushiki Kaisha
- Yoshio Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS