Hiroshi Yoshikawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
METHOD FOR MEASURING SCAN BEAM LIGHT QUANTITY DISTRIBUTION IN SCAN...
- Patent number 6,744,037
- Issue date Jun 1, 2004
- Ricoh Company, Ltd.
- Hiroshi Yoshikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Illuminated resinous button key with optical means for highlighting...
- Patent number 6,036,326
- Issue date Mar 14, 2000
- Fujitsu Takamisawa Component Limited
- Hiroshi Yoshikawa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Method for measuring scan beam light quantity distribution in scan...
- Publication number 20020043611
- Publication date Apr 18, 2002
- Ricoh Company, Ltd.
- Hiroshi Yoshikawa
- H01 - BASIC ELECTRIC ELEMENTS