Yutaka Sakai

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Patents Grantslast 30 patents

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
Thermal image transfer recording medium
- Patent number 5,409,884
- Issue date Apr 25, 1995
- Ricoh Company, Ltd.
- Shigeyuki Harada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS