Yoshihiro Yamada

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spread spectrum communication device and communication system
- Patent number 7,274,729
- Issue date Sep 25, 2007
- Hitachi, Ltd.
- Takashi Shiba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum communication device and communication system
- Patent number 6,697,418
- Issue date Feb 24, 2004
- Hitachi, Ltd.
- Takashi Shiba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum communication device and communication system
- Patent number 6,134,264
- Issue date Oct 17, 2000
- Hitachi, Ltd.
- Takashi Shiba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Surface acoustic wave device and communication device employing the...
- Patent number 5,905,324
- Issue date May 18, 1999
- Hitachi, Ltd.
- Takashi Shiba
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Information delivery system and portable information terminal
- Patent number 5,740,369
- Issue date Apr 14, 1998
- Hitachi, Ltd.
- Tooru Yokozawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Surface acoustic wave device, equipment including the same with ele...
- Patent number 5,729,076
- Issue date Mar 17, 1998
- Hitachi, Ltd.
- Yoshihiro Yamada
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Spread spectrum communication device and communication system
- Publication number 20040120388
- Publication date Jun 24, 2004
- Takashi Shiba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE