Susumu Yamada

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cell switching device capable of effecting hit-less switching betwe...
- Patent number 6,400,718
- Issue date Jun 4, 2002
- Oki Electric Industry Co., Ltd.
- Susumu Yamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Phase comparator for determining in which direction the phase of a...
- Patent number 6,169,774
- Issue date Jan 2, 2001
- Oki Electric Industry Co., Ltd.
- Susumu Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electric power supply system for electric train which removes flick...
- Patent number 5,347,442
- Issue date Sep 13, 1994
- Kabushiki Kaisha Toshiba
- Takuma Henmi
- B60 - VEHICLES IN GENERAL