Tomohisa Hirayama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gate bias circuit
- Patent number 8,004,362
- Issue date Aug 23, 2011
- NEC Corporation
- Tomohisa Hirayama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Base bias circuit, and power amplifier using the base bias circuit
- Patent number 6,842,074
- Issue date Jan 11, 2005
- NEC Corporation
- Noriaki Matsuno
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
GATE BIAS CIRCUIT
- Publication number 20100097147
- Publication date Apr 22, 2010
- NEC Corporation
- Tomohisa Hirayama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Base bias circuit, and power amplifier using the base bias circuit
- Publication number 20040032700
- Publication date Feb 19, 2004
- Noriaki Matsuno
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Analog amplifier circuit
- Publication number 20020118067
- Publication date Aug 29, 2002
- NEC Corporation
- Tomohisa Hirayama
- H03 - BASIC ELECTRONIC CIRCUITRY