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Takaaki Kakitsuka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical device
    • Patent number 12,095,227
    • Issue date Sep 17, 2024
    • Nippon Telegraph and Telephone Corporation
    • Suguru Yamaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser
    • Patent number 12,068,579
    • Issue date Aug 20, 2024
    • Nippon Telegraph and Telephone Corporation
    • Erina Kanno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor optical element
    • Patent number 12,051,884
    • Issue date Jul 30, 2024
    • Nippon Telegraph and Telephone Corporation
    • Takuma Aihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser
    • Patent number 12,027,818
    • Issue date Jul 2, 2024
    • Nippon Telegraph and Telephone Corporation
    • Erina Kanno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor optical module
    • Patent number 11,855,410
    • Issue date Dec 26, 2023
    • Nippon Telegraph and Telephone Corporation
    • Suguru Yamaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical modulator
    • Patent number 11,747,659
    • Issue date Sep 5, 2023
    • Nippon Telegraph and Telephone Corporation
    • Tatsurou Hiraki
    • G02 - OPTICS
  • Information Patent Grant

    Semiconductor optical element
    • Patent number 11,705,693
    • Issue date Jul 18, 2023
    • Nippon Telegraph and Telephone Corporation
    • Takuma Aihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Semiconductor laser
    • Patent number 11,557,876
    • Issue date Jan 17, 2023
    • Nippon Telegraph and Telephone Corporation
    • Nikolaos-Panteleimon Diamantopoulos
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Waveform equalization device
    • Patent number 11,418,232
    • Issue date Aug 16, 2022
    • Nippon Telegraph and Telephone Corporation
    • Nikolaos-Panteleimon Diamantopoulos
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Semiconductor optical device
    • Patent number 11,276,988
    • Issue date Mar 15, 2022
    • Nippon Telegraph and Telephone Corporation
    • Ryo Nakao
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Photonic crystal device
    • Patent number 8,462,827
    • Issue date Jun 11, 2013
    • Nippon Telegraph and Telephone Corporation
    • Shinji Matsuo
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical modulation signal generating device and optical modulation...
    • Patent number 8,306,433
    • Issue date Nov 6, 2012
    • Nippon Telegraph and Telephone Corporation
    • Takaaki Kakitsuka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Optical Device
    • Publication number 20220320831
    • Publication date Oct 6, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takuma Tsurugaya
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Device
    • Publication number 20220320813
    • Publication date Oct 6, 2022
    • Nippon Telegraph and Telephone Corporation
    • Suguru Yamaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Device
    • Publication number 20220231480
    • Publication date Jul 21, 2022
    • Nippon Telegraph and Telephone Corporation
    • Suguru Yamaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Laser
    • Publication number 20220216673
    • Publication date Jul 7, 2022
    • Nippon Telegraph and Telephone Corporation
    • Erina Kanno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Tunable Laser
    • Publication number 20220085576
    • Publication date Mar 17, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takuma Aihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Optical Element
    • Publication number 20220045481
    • Publication date Feb 10, 2022
    • Nippon Telegraph and Telephone Corporation
    • Takuma Aihara
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Laser
    • Publication number 20220029385
    • Publication date Jan 27, 2022
    • Nippon Telegraph and Telephone Corporation
    • Erina Kanno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Waveform Equalization Device
    • Publication number 20220014231
    • Publication date Jan 13, 2022
    • Nippon Telegraph and Telephone Corporation
    • Nikolaos-Panteleimon Diamantopoulos
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Semiconductor Optical Device
    • Publication number 20210336412
    • Publication date Oct 28, 2021
    • Nippon Telegraph and Telephone Corporation
    • Ryo NAKAO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Optical Module
    • Publication number 20210203125
    • Publication date Jul 1, 2021
    • Nippon Telegraph and Telephone Corporation
    • Suguru Yamaoka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Laser
    • Publication number 20210184427
    • Publication date Jun 17, 2021
    • Nippon Telegraph and Telephone Corporation
    • Nikolaos-Panteleimon Diamantopoulos
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Optical Element
    • Publication number 20210184421
    • Publication date Jun 17, 2021
    • Nippon Telegraph and Telephone Corporation
    • Takaaki Kakitsuka
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Optical Element
    • Publication number 20210175685
    • Publication date Jun 10, 2021
    • Nippon Telegraph and Telephone Corporation
    • Takuma AIHARA
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Semiconductor Laser
    • Publication number 20210126430
    • Publication date Apr 29, 2021
    • Nippon Telegraph and Telephone Corporation
    • Erina Kanno
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Modulator
    • Publication number 20200400977
    • Publication date Dec 24, 2020
    • Nippon Telegraph and Telephone Corporation
    • Tatsurou Hiraki
    • G02 - OPTICS
  • Information Patent Application

    PHOTONIC CRYSTAL DEVICE
    • Publication number 20120155502
    • Publication date Jun 21, 2012
    • Nippon Telegraph and Telephone Corporation
    • Shinji Matsuo
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Modulation Signal Generating Device and Optical Modulation...
    • Publication number 20100202776
    • Publication date Aug 12, 2010
    • Nippon Telegraph and Telephone Corporation
    • Takaaki Kakitsuka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE