Tomoe Hagiwara

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring a toner concentration of a two-c...
- Patent number 5,519,316
- Issue date May 21, 1996
- Ricoh Company, Ltd.
- Tomoe Hagiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positively-chargeable toner
- Patent number 5,482,807
- Issue date Jan 9, 1996
- Ricoh Company, Ltd.
- Mitsuo Aoki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner and method of developing
- Patent number 5,474,869
- Issue date Dec 12, 1995
- Ricoh Company, Ltd.
- Masami Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image formation method
- Patent number 5,370,959
- Issue date Dec 6, 1994
- Ricoh Company, Ltd.
- Tomoe Hagiwara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner for developing latent electrostatic images
- Patent number 5,244,765
- Issue date Sep 14, 1993
- Ricoh Company, Ltd.
- Koichi Katoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device of the type forming thin layer of toner on toner...
- Patent number 5,164,774
- Issue date Nov 17, 1992
- Ricoh Company, Ltd.
- Masami Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY