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Takeshi Umeki

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  • Kanagawa-ken, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTICAL AMPLIFICATION APPARATUS AND OPTICAL AMPLIFICATION METHOD
    • Publication number 20240248369
    • Publication date Jul 25, 2024
    • Nippon Telegraph and Telephone Corporation
    • Shimpei SHIMIZU
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL AMPLIFICATION SYSTEM, OPTICAL AMPLIFICATION APPARATUS AND O...
    • Publication number 20240250768
    • Publication date Jul 25, 2024
    • Nippon Telegraph and Telephone Corporation
    • Shimpei SHIMIZU
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Wavelength Converter
    • Publication number 20240241310
    • Publication date Jul 18, 2024
    • Nippon Telegraph and Telephone Corporation
    • Nobutatsu Koshobu
    • G02 - OPTICS
  • Information Patent Application

    Optical Wavelength Conversion Device
    • Publication number 20240152025
    • Publication date May 9, 2024
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Module
    • Publication number 20240152023
    • Publication date May 9, 2024
    • Nippon Telegraph and Telephone Corporation
    • Koji Embutsu
    • G02 - OPTICS
  • Information Patent Application

    Planer Optical Waveguide Device
    • Publication number 20230251549
    • Publication date Aug 10, 2023
    • Nippon Telegraph and Telephone Corporation
    • Asuka Inoue
    • G02 - OPTICS
  • Information Patent Application

    Optical Amplifier
    • Publication number 20230236473
    • Publication date Jul 27, 2023
    • Nippon Telegraph and Telephone Corporation
    • Takushi Kazama
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Apparatus
    • Publication number 20230221617
    • Publication date Jul 13, 2023
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Converter
    • Publication number 20230185157
    • Publication date Jun 15, 2023
    • Nippon Telegraph and Telephone Corporation
    • Nobutatsu Koshobu
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Device
    • Publication number 20230161223
    • Publication date May 25, 2023
    • Nippon Telegraph and Telephone Corporation
    • Osamu Tadanaga
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Apparatus
    • Publication number 20230152665
    • Publication date May 18, 2023
    • Nippon Telegraph and Telephone Corporation
    • Koji Embutsu
    • G02 - OPTICS
  • Information Patent Application

    Optical Communication System
    • Publication number 20230053856
    • Publication date Feb 23, 2023
    • Nippon Telegraph and Telephone Corporation
    • Takushi Kazama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Optical Element and Manufacturing Method Thereof
    • Publication number 20220413355
    • Publication date Dec 29, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takeshi Umeki
    • G02 - OPTICS
  • Information Patent Application

    Planar Optical Waveguide Device
    • Publication number 20220390672
    • Publication date Dec 8, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Apparatus
    • Publication number 20220244616
    • Publication date Aug 4, 2022
    • Nippon Telegraph and Telephone Corporation
    • Koji Embutsu
    • G02 - OPTICS
  • Information Patent Application

    Optical Signal Processing Circuit
    • Publication number 20220236622
    • Publication date Jul 28, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takeshi Umeki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Optical Element
    • Publication number 20220236621
    • Publication date Jul 28, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Element
    • Publication number 20220221770
    • Publication date Jul 14, 2022
    • Nippon Telegraph and Telephone Corporation
    • Osamu Tadanaga
    • G02 - OPTICS
  • Information Patent Application

    Optical Amplifier
    • Publication number 20220200229
    • Publication date Jun 23, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takushi Kazama
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Wavelength Conversion Element and Method for Manufacturing Same
    • Publication number 20220019125
    • Publication date Jan 20, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takushi Kazama
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Element and Method for Producing Same
    • Publication number 20220011647
    • Publication date Jan 13, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • C30 - CRYSTAL GROWTH
  • Information Patent Application

    Wavelength Conversion Device
    • Publication number 20220004081
    • Publication date Jan 6, 2022
    • Nippon Telegraph and Telephone Corporation
    • Koji Embutsu
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Apparatus
    • Publication number 20210405502
    • Publication date Dec 30, 2021
    • Nippon Telegraph and Telephone Corporation
    • Takeshi Umeki
    • G02 - OPTICS
  • Information Patent Application

    Wavelength Conversion Element and Method for Manufacturing Waveleng...
    • Publication number 20210223471
    • Publication date Jul 22, 2021
    • Nippon Telegraph and Telephone Corporation
    • Takahiro Kashiwazaki
    • G02 - OPTICS
  • Information Patent Application

    Optical Signal Transmitter
    • Publication number 20210044358
    • Publication date Feb 11, 2021
    • NIippon Telegraph and Telephone Corporation
    • Takushi Kazama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL AMPLIFIER DEVICE
    • Publication number 20150036210
    • Publication date Feb 5, 2015
    • Masaki Asobe
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Wavelength Converter and Wavelength Conversion Apparatus
    • Publication number 20100039699
    • Publication date Feb 18, 2010
    • Nippon Telegraph and Telephone Corporation
    • Masaki Asobe
    • G02 - OPTICS
  • Information Patent Application

    LIGHT SOURCE AND GAS MEASURING DEVICE
    • Publication number 20090303486
    • Publication date Dec 10, 2009
    • Nippon Telegraph and Telephone Corporation
    • Katsuaki Magari
    • G02 - OPTICS
  • Information Patent Application

    METHOD FOR MANUFACTURING A PERIODICALLY-POLED STRUCTURE
    • Publication number 20090022903
    • Publication date Jan 22, 2009
    • Nippon Telegraph and Telephone Corporation
    • Hiroyuki Suzuki
    • G02 - OPTICS