Yutaka Kawato

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
System for controlling network activation sequence
- Patent number 4,812,839
- Issue date Mar 14, 1989
- Fujitsu Limited
- Sumie Okada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Subscriber's line switching control system
- Patent number 4,761,779
- Issue date Aug 2, 1988
- Fujitsu Limited
- Takashi Nara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for controlling network activation sequence
- Patent number 4,754,273
- Issue date Jun 28, 1988
- Fujitsu Limited
- Sumie Okada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital exchange system
- Patent number 4,698,801
- Issue date Oct 6, 1987
- Fujitsu Limited
- Takashi Hatano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE