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Yasuaki Hashizume

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  • Kanagawa-ken, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Semiconductor Optical Integrated Device
    • Publication number 20240128716
    • Publication date Apr 18, 2024
    • Nippon Telegraph and Telephone Corporation
    • Yasuhiko Nakanishi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Coupling Method
    • Publication number 20230350133
    • Publication date Nov 2, 2023
    • Nippon Telegraph and Telephone Corporation
    • Yasuaki Hashizume
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL MODULE
    • Publication number 20230288737
    • Publication date Sep 14, 2023
    • FURUKAWA ELECTRIC CO., LTD.
    • Kazuya NAGASHIMA
    • G02 - OPTICS
  • Information Patent Application

    Semiconductor IQ Modulator
    • Publication number 20230273497
    • Publication date Aug 31, 2023
    • Nippon Telegraph and Telephone Corporation
    • Josuke Ozaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    IQ Optical Modulator
    • Publication number 20220326585
    • Publication date Oct 13, 2022
    • Nippon Telegraph and Telephone Corporation
    • Yoshihiro Ogiso
    • G02 - OPTICS
  • Information Patent Application

    Semiconductor Mach-Zehnder Optical Modulator and IQ Modulator
    • Publication number 20220326587
    • Publication date Oct 13, 2022
    • Nippon Telegraph and Telephone Corporation
    • Josuke Ozaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    POLARIZATION-INDEPENDENT WAVEGUIDE-TYPE OPTICAL INTERFERENCE CIRCUIT
    • Publication number 20110103736
    • Publication date May 5, 2011
    • Nippon Telegraph and Telephone Corporation
    • Yasuaki Hashizume
    • G02 - OPTICS
  • Information Patent Application

    WAVEGUIDE DEVICE AND MODULE
    • Publication number 20110064355
    • Publication date Mar 17, 2011
    • Nippon Telegraph and Telephone Corporation
    • Shunichi Soma
    • G02 - OPTICS
  • Information Patent Application

    WAVEGUIDE-TYPE OPTICAL INTERFEROMETER
    • Publication number 20100104237
    • Publication date Apr 29, 2010
    • Nippon Telegraph and Telephone Corporation
    • Yusuke Nasu
    • G02 - OPTICS
  • Information Patent Application

    Planar Lightwave Circuit Type Variable Optical Attenuator
    • Publication number 20070212012
    • Publication date Sep 13, 2007
    • Nippon Telegraph and Telephone Corporation
    • Yasuaki Hashizume
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL WAVEGUIDE INTERFEROMETER
    • Publication number 20020181870
    • Publication date Dec 5, 2002
    • Yasuyuki Inoue
    • G02 - OPTICS