Osamu Hamanaka

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus with removable developing means
- Patent number 5,153,646
- Issue date Oct 6, 1992
- Kabushiki Kaisha Toshiba
- Yasuo Abuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with easily removable developing units
- Patent number 4,956,673
- Issue date Sep 11, 1990
- Kabushiki Kaisha Toshiba
- Yasuo Abuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Removable developing unit for an electrostatic copier and locking d...
- Patent number 4,931,837
- Issue date Jun 5, 1990
- Kabushiki Kaisha Toshiba
- Yasuo Abuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 4,857,954
- Issue date Aug 15, 1989
- Kabushiki Kaisha Toshiba
- Yasuo Abuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 4,814,823
- Issue date Mar 21, 1989
- Kabushiki Kaisha Toshiba
- Yasuo Abuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY