Hiroshi Matsuyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mobile IP packet communication system
- Patent number 7,586,913
- Issue date Sep 8, 2009
- Mitsubishi Denki Kabushiki Kaisha
- Akira Okubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication service system and dedicated communication terminal u...
- Patent number 7,046,645
- Issue date May 16, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Hiroshi Matsuyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Access network system capable of reducing call loss probability
- Patent number 6,219,525
- Issue date Apr 17, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Takeshi Imai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Base station system suitable for microcells
- Patent number 5,898,683
- Issue date Apr 27, 1999
- Mitsubishi Denki Kabushiki Kaisha
- Shinji Matsumoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Mobile ip packet communication system
- Publication number 20040076158
- Publication date Apr 22, 2004
- Akira Okubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet transportation system in mobile communications
- Publication number 20010019545
- Publication date Sep 6, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Akira Okubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE