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Takashi Go
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Musashino-shi, Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Wavelength monitoring device and controlling method thereof
Patent number
12,107,626
Issue date
Oct 1, 2024
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical waveguide
Patent number
12,092,870
Issue date
Sep 17, 2024
Nippon Telegraph and Telephone Corporation
Takashi Go
G02 - OPTICS
Information
Patent Grant
Optical signal processing apparatus and manufacturing method thereof
Patent number
12,032,231
Issue date
Jul 9, 2024
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Optical signal processing apparatus
Patent number
12,022,246
Issue date
Jun 25, 2024
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical signal processing apparatus
Patent number
12,007,665
Issue date
Jun 11, 2024
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
G02 - OPTICS
Information
Patent Grant
Optical module
Patent number
11,977,315
Issue date
May 7, 2024
Nippon Telegraph and Telephone Corporation
Ai Yanagihara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Wavelength monitoring circuit
Patent number
11,973,535
Issue date
Apr 30, 2024
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
G01 - MEASURING TESTING
Information
Patent Grant
Planar optical waveguide circuit
Patent number
11,835,761
Issue date
Dec 5, 2023
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
G02 - OPTICS
Information
Patent Grant
Optical signal processing device
Patent number
11,822,206
Issue date
Nov 21, 2023
Nippon Telegraph and Telephone Corporation
Mitsumasa Nakajima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Optical module and manufacturing method thereof
Patent number
11,740,491
Issue date
Aug 29, 2023
Nippon Telegraph and Telephone Corporation
Ai Yanagihara
G02 - OPTICS
Information
Patent Grant
Optical signal processing device and method for controlling same
Patent number
11,405,702
Issue date
Aug 2, 2022
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
G02 - OPTICS
Information
Patent Grant
Optical switch array and multicast switch
Patent number
11,194,093
Issue date
Dec 7, 2021
Nippon Telegraph and Telephone Corporation
Kazunori Senoo
G02 - OPTICS
Information
Patent Grant
Variable wavelength filter
Patent number
11,112,561
Issue date
Sep 7, 2021
Nippon Telegraph and Telephone Corporation
Kenya Suzuki
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Optical Phase Shifter, Optical Switch and 90 Degrees Optical Hybrid
Publication number
20240201521
Publication date
Jun 20, 2024
Nippon Telegraph and Telephone Corporation
Takashi Go
G02 - OPTICS
Information
Patent Application
Photomask, Optical-Waveguide, Optical Circuit and Method of Manufac...
Publication number
20230259017
Publication date
Aug 17, 2023
Nippon Telegraph and Telephone Corporation
Takashi Go
G02 - OPTICS
Information
Patent Application
Optical Waveguide
Publication number
20230032684
Publication date
Feb 2, 2023
Nippon Telegraph and Telephone Corporation
Takashi Go
G02 - OPTICS
Information
Patent Application
Optical Waveguide
Publication number
20220413218
Publication date
Dec 29, 2022
Nippon Telegraph and Telephone Corporation
Takashi Go
G02 - OPTICS
Information
Patent Application
Optical Module and Manufacturing Method Thereof
Publication number
20220357601
Publication date
Nov 10, 2022
Nippon Telegraph and Telephone Corporation
Ai Yanagihara
G02 - OPTICS
Information
Patent Application
Optical Signal Processing Apparatus
Publication number
20220272427
Publication date
Aug 25, 2022
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
G02 - OPTICS
Information
Patent Application
Planar Optical Waveguide Circuit
Publication number
20220091329
Publication date
Mar 24, 2022
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
G02 - OPTICS
Information
Patent Application
Optical Signal Processing Apparatus
Publication number
20220091473
Publication date
Mar 24, 2022
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
G02 - OPTICS
Information
Patent Application
Wavelength Monitoring Device and Controlling Method Thereof
Publication number
20220086538
Publication date
Mar 17, 2022
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Signal Processing Apparatus and Manufacturing Method Thereof
Publication number
20220066244
Publication date
Mar 3, 2022
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Wavelength Monitoring Circuit
Publication number
20220011508
Publication date
Jan 13, 2022
Nippon Telegraph and Telephone Corporation
Osamu Moriwaki
G02 - OPTICS
Information
Patent Application
Optical Module
Publication number
20210397065
Publication date
Dec 23, 2021
Nippon Telegraph and Telephone Corporation
Ai Yanagihara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical Signal Processing Device and Method For Controlling Same
Publication number
20210258663
Publication date
Aug 19, 2021
Nippon Telegraph and Telephone Corporation
Keita Yamaguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Variable Wavelength Filter
Publication number
20210141153
Publication date
May 13, 2021
Nippon Telegraph and Telephone Corporation
Kenya Suzuki
G02 - OPTICS
Information
Patent Application
Optical Signal Processing Device
Publication number
20210026220
Publication date
Jan 28, 2021
Nippon Telegraph and Telephone Corporation
Mitsumasa Nakajima
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
OPTICAL SWITCH ARRAY AND MULTICAST SWITCH
Publication number
20200408990
Publication date
Dec 31, 2020
Nippon Telegraph and Telephone Corporation
Kazunori Senoo
G02 - OPTICS