Riichiro Kawahara

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Nagano-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Login system and login method
- Patent number 7,900,244
- Issue date Mar 1, 2011
- Seiko Epson Corporation
- Hideaki Ogata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Login system and login method
- Publication number 20060253898
- Publication date Nov 9, 2006
- Seiko Epson Corporation
- Hideaki Ogata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE