Kouji Izumi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ink-jet printing device and driving circuit used in the ink-jet pri...
- Patent number 6,053,596
- Issue date Apr 25, 2000
- Ricoh Company, Ltd.
- Tomoaki Nakano
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Ink jet head
- Patent number 5,270,740
- Issue date Dec 14, 1993
- Ricoh Company, Ltd.
- Osamu Naruse
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Body massaging apparatus of water current type
- Patent number 5,010,605
- Issue date Apr 30, 1991
- Ricoh Company, Ltd.
- Toshio Shiina
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Semiconductor diffusion type force sensing apparatus
- Patent number 4,884,051
- Issue date Nov 28, 1989
- Ricoh Company, Ltd.
- Junichi Takahashi
- G01 - MEASURING TESTING
Information Patent Grant
Force detecting device
- Patent number 4,849,730
- Issue date Jul 18, 1989
- Ricoh Company, Ltd.
- Kouji Izumi
- G01 - MEASURING TESTING
Information Patent Grant
Device for detecting viscosity of liquid
- Patent number 4,677,845
- Issue date Jul 7, 1987
- Ricoh Company, Ltd.
- Kouji Izumi
- G01 - MEASURING TESTING