Kyozo Tsujikawa

Person

Tsukuba-shi, Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multicore optical fiber and design method
- Patent number 12,019,267
- Issue date Jun 25, 2024
- Nippon Telegraph and Telephone Corporation
- Taiji Sakamoto
- G02 - OPTICS
Information Patent Grant
Acoustic mode propagation speed measurement method and acoustic mod...
- Patent number 11,815,421
- Issue date Nov 14, 2023
- Nippon Telegraph and Telephone Corporation
- Yuto Sagae
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber manufacturing method using relative bulk densities
- Patent number 11,237,322
- Issue date Feb 1, 2022
- Furukawa Electric Co., Ltd.
- Shinichi Arai
- G02 - OPTICS
Information Patent Grant
Optical fiber design method
- Patent number 10,871,648
- Issue date Dec 22, 2020
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical fiber design method
- Patent number 10,816,722
- Issue date Oct 27, 2020
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Grant
Photonic crystal fiber and high-power light transmission system
- Patent number 10,545,333
- Issue date Jan 28, 2020
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Photonic crystal fiber and high-power light transmission system
- Patent number 10,539,784
- Issue date Jan 21, 2020
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Grant
Optical fiber and optical transmission system
- Patent number 10,444,428
- Issue date Oct 15, 2019
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Photonic crystal fiber
- Patent number 10,310,177
- Issue date Jun 4, 2019
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
MULTICORE OPTICAL FIBER AND DESIGN METHOD
- Publication number 20220276430
- Publication date Sep 1, 2022
- Nippon Telegraph and Telephone Corporation
- Taiji SAKAMOTO
- G02 - OPTICS
Information Patent Application
ACOUSTIC MODE PROPAGATION SPEED MEASUREMENT METHOD AND ACOUSTIC MOD...
- Publication number 20220170817
- Publication date Jun 2, 2022
- Nippon Telegraph and Telephone Corporation
- Yuto SAGAE
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL FIBER MANUFACTURING METHOD
- Publication number 20200012042
- Publication date Jan 9, 2020
- FURUKAWA ELECTRIC CO., LTD.
- Shinichi ARAI
- G02 - OPTICS
Information Patent Application
PHOTONIC CRYSTAL FIBER AND HIGH-POWER LIGHT TRANSMISSION SYSTEM
- Publication number 20190339513
- Publication date Nov 7, 2019
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20190004246
- Publication date Jan 3, 2019
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
OPTICAL FIBER DESIGN METHOD
- Publication number 20180341104
- Publication date Nov 29, 2018
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PHOTONIC CRYSTAL FIBER AND HIGH-POWER LIGHT TRANSMISSION SYSTEM
- Publication number 20180321439
- Publication date Nov 8, 2018
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G02 - OPTICS
Information Patent Application
PHOTONIC CRYSTAL FIBER
- Publication number 20180172902
- Publication date Jun 21, 2018
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER DESIGN METHOD
- Publication number 20180052278
- Publication date Feb 22, 2018
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS

Kyozo Tsujikawa

Person

Patents Grantslast 30 patents

Multicore optical fiber and design method

Acoustic mode propagation speed measurement method and acoustic mod...

Optical fiber manufacturing method using relative bulk densities

Optical fiber design method

Optical fiber design method

Photonic crystal fiber and high-power light transmission system

Photonic crystal fiber and high-power light transmission system

Optical fiber and optical transmission system

Photonic crystal fiber

Patents Applicationslast 30 patents

MULTICORE OPTICAL FIBER AND DESIGN METHOD

ACOUSTIC MODE PROPAGATION SPEED MEASUREMENT METHOD AND ACOUSTIC MOD...

OPTICAL FIBER MANUFACTURING METHOD

PHOTONIC CRYSTAL FIBER AND HIGH-POWER LIGHT TRANSMISSION SYSTEM

OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM

OPTICAL FIBER DESIGN METHOD

PHOTONIC CRYSTAL FIBER AND HIGH-POWER LIGHT TRANSMISSION SYSTEM

PHOTONIC CRYSTAL FIBER

OPTICAL FIBER DESIGN METHOD