Eisaku Akutsu

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Search tuning system for television receiver
- Patent number RE31335
- Issue date Aug 2, 1983
- Hitachi, Ltd.
- Shigeo Matsuura
- 455 - Telecommunications
Information Patent Grant
Synchronizing signal discriminator for use in channel selection app...
- Patent number 4,337,486
- Issue date Jun 29, 1982
- Hitachi, Ltd.
- Eisaku Akutsu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital-to-analog converter of the pulse width modulation type
- Patent number 4,233,591
- Issue date Nov 11, 1980
- Hitachi, Ltd.
- Toshinori Murata
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Search tuning system for television receiver
- Patent number 4,211,988
- Issue date Jul 8, 1980
- Hitachi, Ltd.
- Shigeo Matsuura
- H03 - BASIC ELECTRONIC CIRCUITRY