Hiromitsu Fujikawa

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mass mail detection system and mail server
- Patent number 7,853,654
- Issue date Dec 14, 2010
- KDDI Corporation
- Katsuyuki Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Mass mail detection system and mail server
- Publication number 20050188032
- Publication date Aug 25, 2005
- Katsuyuki Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE