Harumi Ogawa

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Suwa-shi, Nagano, JP

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Patents Grantslast 30 patents

Information Patent Grant
Residual image display
- Patent number 7,355,573
- Issue date Apr 8, 2008
- NITTOH KOGAKU K.K.
- Harumi Ogawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Light emitting and receiving circuit, camera and optical device
- Patent number 6,449,437
- Issue date Sep 10, 2002
- Nittou Kougaku
- Harumi Ogawa
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Residual image display
- Publication number 20060152437
- Publication date Jul 13, 2006
- Nittoh Kogaku K.K.
- Harumi Ogawa
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS