TREA

Toru Yoshikawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical amplifier and method of controlling optical amplifier
    • Patent number 9,071,035
    • Issue date Jun 30, 2015
    • Furukawa Electric Co., Ltd.
    • Eisuke Otani
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical amplifying apparatus
    • Patent number 7,852,550
    • Issue date Dec 14, 2010
    • The Furukawa Electric Co., Ltd.
    • Takeo Okaniwa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sheet convey device
    • Patent number 4,705,266
    • Issue date Nov 10, 1987
    • NEC Corporation
    • Tsutomu Sasage
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents