Hiroyuki Yamamoto

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Kodaira, JP

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Patents Grantslast 30 patents

Information Patent Grant
Negative feedback amplifier and method of controlling loop gain the...
- Patent number 6,941,118
- Issue date Sep 6, 2005
- Hitachi Kokusai Electric Inc.
- Hiroyuki Yamamoto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power amplifier having negative feedback circuit for transmitter
- Patent number 6,693,956
- Issue date Feb 17, 2004
- Hitachi Denshi Kabushiki Kaisha
- Hiroyuki Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Power amplifier having negative feedback circuit for transmitter
- Patent number 6,384,677
- Issue date May 7, 2002
- Hitachi Kokusai Electric Inc.
- Hiroyuki Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Negative feedback amplifier and method of controlling loop gain the...
- Publication number 20020171476
- Publication date Nov 21, 2002
- Hiroyuki Yamamoto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Power amplifier having negative feedback circuit for transmitter
- Publication number 20010010713
- Publication date Aug 2, 2001
- Hiroyuki Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE