Yoshiharu Umemura

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Comparator including a differential transistor pair and a diode arr...
- Patent number 6,774,680
- Issue date Aug 10, 2004
- Hitachi, Ltd.
- Kengo Imagawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
AFC voltage superimposing circuit for electronic tuner
- Patent number 4,144,512
- Issue date Mar 13, 1979
- Hitachi, Ltd.
- Yoshiharu Umemura
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Comparator
- Publication number 20030222681
- Publication date Dec 4, 2003
- Kengo Imagawa
- H03 - BASIC ELECTRONIC CIRCUITRY