TREA

Jun Ashiwa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    High frequency filter
    • Patent number 4,283,697
    • Issue date Aug 11, 1981
    • Oki Electric Industry Co., Ltd.
    • Yoshio Masuda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    High frequency filter
    • Patent number 4,255,729
    • Issue date Mar 10, 1981
    • Oki Electric Industry Co., Ltd.
    • Atsushi Fukasawa
    • H01 - BASIC ELECTRIC ELEMENTS