Takahisa Kato

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Numazu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Developing device using a toner and carrier mixture
- Patent number 5,771,426
- Issue date Jun 23, 1998
- Ricoh Company, Ltd.
- Seiji Oka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Carrier for dry two-component developer and method of producing the...
- Patent number 5,652,079
- Issue date Jul 29, 1997
- Ricoh Company, Ltd.
- Satoshi Mochizuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Two-component dry type developer for developing latent electrostati...
- Patent number 5,225,302
- Issue date Jul 6, 1993
- Ricoh Company, Ltd.
- Tetsuo Isoda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY