TREA

Junichiro Yamakawa

Follow

Person

  • Nakano-Ku, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Transmission amplifier
    • Patent number 7,375,588
    • Issue date May 20, 2008
    • Hitachi Kokusai Electric Inc.
    • Junichiro Yamakawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Amplification device
    • Patent number 6,819,174
    • Issue date Nov 16, 2004
    • Hitachi Kokusai Electric Inc.
    • Junichiro Yamakawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Distortion-compensated amplifier device
    • Patent number 6,417,731
    • Issue date Jul 9, 2002
    • Hitachi Kokusai Electric Inc.
    • Kiyoshi Funada
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

  • Information Patent Application

    Transmission amplifier
    • Publication number 20060214730
    • Publication date Sep 28, 2006
    • Junichiro Yamakawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Amplification device
    • Publication number 20030184313
    • Publication date Oct 2, 2003
    • Junichiro Yamakawa
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Application

    Feedforward amplifier
    • Publication number 20030011428
    • Publication date Jan 16, 2003
    • Junichiro Yamakawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Base-station amplifier device
    • Publication number 20030008683
    • Publication date Jan 9, 2003
    • Yoshinari Nanao
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE