Harumi Takahashi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus having means for detecting loaded unit
- Patent number 4,978,995
- Issue date Dec 18, 1990
- Ricoh Company, Ltd.
- Harumi Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for detecting momentary cutoff of AC power source
- Patent number 4,612,657
- Issue date Sep 16, 1986
- Ricoh Company, Ltd.
- Harumi Takahashi
- G01 - MEASURING TESTING
Information Patent Grant
Transfer medium separating device
- Patent number 4,412,732
- Issue date Nov 1, 1983
- Ricoh Company, Ltd.
- Yoshihiro Ogata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer medium separating device
- Patent number 4,408,863
- Issue date Oct 11, 1983
- Ricoh Company, Ltd.
- Yoshihiro Ogata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic copying apparatus
- Patent number 4,367,032
- Issue date Jan 4, 1983
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY