TREA

Kiyofumi Kikuchi

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  • Atsugi-shi, Kanagawa-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical circuit with common ground configuration for resistors and...
    • Patent number 12,099,266
    • Issue date Sep 24, 2024
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • G02 - OPTICS
  • Information Patent Grant

    Optical module
    • Patent number 12,078,851
    • Issue date Sep 3, 2024
    • Nippon Telegraph and Telephone Corporation
    • Shunichi Soma
    • G02 - OPTICS
  • Information Patent Grant

    Photodetector
    • Patent number 11,973,159
    • Issue date Apr 30, 2024
    • Nippon Telegraph and Telephone Corporation
    • Kotaro Takeda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical modulator
    • Patent number 11,841,598
    • Issue date Dec 12, 2023
    • Nippon Telegraph and Telephone Corporation
    • Masayuki Takahashi
    • G02 - OPTICS
  • Information Patent Grant

    Optical module
    • Patent number 11,592,629
    • Issue date Feb 28, 2023
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Grant

    Optical module
    • Patent number 11,567,275
    • Issue date Jan 31, 2023
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Grant

    Optical module
    • Patent number 11,561,350
    • Issue date Jan 24, 2023
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • G02 - OPTICS
  • Information Patent Grant

    Optical transmitter
    • Patent number 11,340,478
    • Issue date May 24, 2022
    • Nippon Telegraph and Telephone Corporation
    • Toshihiro Ito
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Optical modulator
    • Patent number 10,890,787
    • Issue date Jan 12, 2021
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Grant

    Photodetector
    • Patent number 10,720,543
    • Issue date Jul 21, 2020
    • Nippon Telegraph and Telephone Corporation
    • Hiroshi Fukuda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Optical receiver
    • Patent number 10,601,522
    • Issue date Mar 24, 2020
    • Nippon Telegraph and Telephone Corporation
    • Toshihiro Itoh
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Coherent optical mixer circuit
    • Patent number 10,295,744
    • Issue date May 21, 2019
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • G02 - OPTICS
  • Information Patent Grant

    Optical module
    • Patent number 10,277,271
    • Issue date Apr 30, 2019
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Polarization multiplexing optical transmission circuit and polariza...
    • Patent number 10,193,653
    • Issue date Jan 29, 2019
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Solder joint structure of flexible printed circuit board
    • Patent number 10,165,690
    • Issue date Dec 25, 2018
    • Nippon Telegraph and Telephone Corporation
    • Mitsuo Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Multi-stage interferometer circuit with waveform shaping function
    • Patent number 10,050,717
    • Issue date Aug 14, 2018
    • Nippon Telegraph and Telephone Corporation
    • Takashi Goh
    • G02 - OPTICS
  • Information Patent Grant

    Polarization rotator
    • Patent number 9,817,186
    • Issue date Nov 14, 2017
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • G02 - OPTICS
  • Information Patent Grant

    Light modulation circuit
    • Patent number 9,128,348
    • Issue date Sep 8, 2015
    • Nippon Telegraph and Telephone Corporation
    • Hiroshi Yamazaki
    • G02 - OPTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    OPTO-Electronic Integrated Module
    • Publication number 20230244045
    • Publication date Aug 3, 2023
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Application

    Optical Communication Element
    • Publication number 20230156932
    • Publication date May 18, 2023
    • Nippon Telegraph and Telephone Corporation
    • Ken Tsuzuki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Optical Circuit
    • Publication number 20220365377
    • Publication date Nov 17, 2022
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • G02 - OPTICS
  • Information Patent Application

    Photodetector
    • Publication number 20220320361
    • Publication date Oct 6, 2022
    • Nippon Telegraph and Telephone Corporation
    • Kotaro Takeda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Optical Module
    • Publication number 20220214508
    • Publication date Jul 7, 2022
    • Nippon Telegraph and Telephone Corporation
    • Shunichi Soma
    • G02 - OPTICS
  • Information Patent Application

    Optical Modulator
    • Publication number 20220137478
    • Publication date May 5, 2022
    • Nippon Telegraph and Telephone Corporation
    • Masayuki Takahashi
    • G02 - OPTICS
  • Information Patent Application

    Optical Module
    • Publication number 20220066110
    • Publication date Mar 3, 2022
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Application

    Optical Transmitter
    • Publication number 20220011606
    • Publication date Jan 13, 2022
    • Nippon Telegraph and Telephone Corporation
    • Toshihiro Ito
    • G02 - OPTICS
  • Information Patent Application

    Optical Module
    • Publication number 20210382249
    • Publication date Dec 9, 2021
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Application

    Optical Module
    • Publication number 20210364711
    • Publication date Nov 25, 2021
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • G02 - OPTICS
  • Information Patent Application

    OPTICAL RECEIVER
    • Publication number 20190181961
    • Publication date Jun 13, 2019
    • Nippon Telegraph and Telephone Corporation
    • Toshihiro Itoh
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    OPTICAL MODULATOR
    • Publication number 20190025615
    • Publication date Jan 24, 2019
    • Nippon Telegraph and Telephone Corporation
    • Yuriko Kawamura
    • G02 - OPTICS
  • Information Patent Application

    PHOTODETECTOR
    • Publication number 20180233618
    • Publication date Aug 16, 2018
    • Nippon Telegraph and Telephone Corporation
    • Hiroshi Fukuda
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SOLDER JOINT STRUCTURE OF FLEXIBLE PRINTED CIRCUIT BOARD
    • Publication number 20180199445
    • Publication date Jul 12, 2018
    • Nippon Telegraph and Telephone Corporation
    • Mitsuo Usui
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    OPTICAL MODULE
    • Publication number 20180198483
    • Publication date Jul 12, 2018
    • Nippon Telegraph and Telephone Corporation
    • Kiyofumi Kikuchi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    COHERENT OPTICAL MIXER CIRCUIT
    • Publication number 20180143376
    • Publication date May 24, 2018
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • G02 - OPTICS
  • Information Patent Application

    Polarization Multiplexing Optical Transmission Circuit and Polariza...
    • Publication number 20180139007
    • Publication date May 17, 2018
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    MULTI-STAGE INTERFEROMETER CIRCUIT WITH WAVEFORM SHAPING FUNCTION
    • Publication number 20180034555
    • Publication date Feb 1, 2018
    • Nippon Telegraph and Telephone Corporation
    • Takashi Goh
    • G02 - OPTICS
  • Information Patent Application

    POLARIZATION ROTATOR
    • Publication number 20170068048
    • Publication date Mar 9, 2017
    • Nippon Telegraph and Telephone Corporation
    • Shin Kamei
    • G02 - OPTICS
  • Information Patent Application

    LIGHT MODULATION CIRCUIT
    • Publication number 20150261059
    • Publication date Sep 17, 2015
    • Hiroshi Yamazaki
    • G02 - OPTICS