Nobuyuki Matsuyama

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Video conversation/monitoring system having a remote monitoring fun...
- Patent number 5,745,160
- Issue date Apr 28, 1998
- Hitachi, Ltd.
- Kiyoshi Ishida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calling method for communication terminal device
- Patent number 5,600,655
- Issue date Feb 4, 1997
- Hitachi, Ltd.
- Iwao Ishinabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio and video telecommunication system with remote monitoring fun...
- Patent number 5,585,839
- Issue date Dec 17, 1996
- Hitachi Ltd.
- Kiyoshi Ishida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calling method for communication terminal device
- Patent number 5,457,692
- Issue date Oct 10, 1995
- Hitachi, Ltd.
- Iwao Ishinabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video conference device with facsimile function
- Patent number 5,373,316
- Issue date Dec 13, 1994
- Hitachi, Ltd.
- Iwao Ishinabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE