Kazuhide Nakajima

Person

Mito-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Long period fiber grating and optical transmission system
- Patent number 12,174,413
- Issue date Dec 24, 2024
- Nippon Telegraph and Telephone Corporation
- Ryota Imada
- G02 - OPTICS
Information Patent Grant
Propagation mode loss difference compensator
- Patent number 12,158,607
- Issue date Dec 3, 2024
- Nippon Telegraph and Telephone Corporation
- Yoko Yamashita
- G02 - OPTICS
Information Patent Grant
Multicore optical fiber and design method
- Patent number 12,117,645
- Issue date Oct 15, 2024
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Grant
Optical fiber evaluation device and optical fiber evaluation method
- Patent number 12,085,749
- Issue date Sep 10, 2024
- Nippon Telegraph and Telephone Corporation
- Nobutomo Hanzawa
- G02 - OPTICS
Information Patent Grant
Optical transmission system
- Patent number 12,034,487
- Issue date Jul 9, 2024
- Nippon Telegraph and Telephone Corporation
- Taiji Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
Optical transmission system
- Patent number 11,956,070
- Issue date Apr 9, 2024
- Nippon Telegraph and Telephone Corporation
- Taiji Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Core position grasping method, connection method, and connection de...
- Patent number 11,906,783
- Issue date Feb 20, 2024
- Nippon Telegraph and Telephone Corporation
- Yoko Yamashita
- G02 - OPTICS
Information Patent Grant
Multicore optical fiber, method of designing multicore optical fibe...
- Patent number 11,899,237
- Issue date Feb 13, 2024
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Grant
Hole assisted optical fiber
- Patent number 11,860,405
- Issue date Jan 2, 2024
- Nippon Telegraph and Telephone Corporation
- Saki Nozoe
- 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
Multicore optical fiber and design method
- Patent number 11,762,144
- Issue date Sep 19, 2023
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Grant
Optical communication system and optical communication method
- Patent number 11,722,223
- Issue date Aug 8, 2023
- Nippon Telegraph and Telephone Corporation
- Yuto Sagae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical connector ferrule, sleeve, and method for manufacturing fer...
- Patent number 11,474,303
- Issue date Oct 18, 2022
- Nippon Telegraph and Telephone Corporation
- Masaaki Takaya
- G02 - OPTICS
Information Patent Grant
Multi-core fiber connector
- Patent number 11,454,757
- Issue date Sep 27, 2022
- Nippon Telegraph and Telephone Corporation
- Taiji Sakamoto
- G02 - OPTICS
Information Patent Grant
Optical fiber and optical transmission system
- Patent number 11,366,266
- Issue date Jun 21, 2022
- Nippon Telegraph and Telephone Corporation
- Yuto Sagae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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 amplifier
- Patent number 11,196,227
- Issue date Dec 7, 2021
- Nippon Telegraph and Telephone Corporation
- Masaki Wada
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber and optical transmission system
- Patent number 11,156,767
- Issue date Oct 26, 2021
- Nippon Telegraph and Telephone Corporation
- Azusa Urushibara
- G02 - OPTICS
Information Patent Grant
Connection device, optical connector manufacturing device, connecti...
- Patent number 10,955,622
- Issue date Mar 23, 2021
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- 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 and optical transmission system
- Patent number 10,790,905
- Issue date Sep 29, 2020
- Nippon Telegraph and Telephone Corporation
- Takayoshi Mori
- G02 - OPTICS
Information Patent Grant
Inter-mode loss difference compensator and optical amplifier
- Patent number 10,782,478
- Issue date Sep 22, 2020
- Nippon Telegraph and Telephone Corporation
- Masaki Wada
- G02 - OPTICS
Information Patent Grant
Optical transmission system
- Patent number 10,705,291
- Issue date Jul 7, 2020
- Nippon Telegraph and Telephone Corporation
- Azusa Urushibara
- G02 - OPTICS
Information Patent Grant
Alignment apparatus and alignment method
- Patent number 10,620,372
- Issue date Apr 14, 2020
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G01 - MEASURING TESTING
Information Patent Grant
Optical connector
- Patent number 10,585,235
- Issue date Mar 10, 2020
- Nippon Telegraph and Telephone Corporation
- Taiji Sakamoto
- 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
Measuring method of longitudinal distribution of bending loss of op...
- Patent number 9,562,827
- Issue date Feb 7, 2017
- Fujikura Ltd.
- Shoji Tanigawa
- G01 - MEASURING TESTING
Information Patent Grant
Crosstalk measuring method and crosstalk measuring device
- Patent number 9,252,872
- Issue date Feb 2, 2016
- Fujikura Ltd.
- Hiroki Hamaguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SHEET
- Publication number 20240390535
- Publication date Nov 28, 2024
- Nippon Telegraph and Telephone Corporation
- Asuka MIYAKE
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
PHOTOCATALYST SHEET
- Publication number 20240375093
- Publication date Nov 14, 2024
- Nippon Telegraph and Telephone Corporation
- Asuka MIYAKE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
BANKNOTE STERILIZATION SYSTEM
- Publication number 20240378937
- Publication date Nov 14, 2024
- Nippon Telegraph and Telephone Corporation
- Asuka MIYAKE
- G07 - CHECKING-DEVICES
Information Patent Application
OPTICAL SIDE INPUT/OUTPUT CIRCUIT
- Publication number 20240369769
- Publication date Nov 7, 2024
- Nippon Telegraph and Telephone Corporation
- Yoko YAMASHITA
- G02 - OPTICS
Information Patent Application
FIBER OPTIC CABLE
- Publication number 20240361551
- Publication date Oct 31, 2024
- Nippon Telegraph and Telephone Corporation
- Yusuke YAMADA
- G02 - OPTICS
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND CONTROL METHOD
- Publication number 20240335578
- Publication date Oct 10, 2024
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- B66 - HOISTING LIFTING HAULING
Information Patent Application
AIR CONDITIONING EQUIPMENT
- Publication number 20240277886
- Publication date Aug 22, 2024
- Nippon Telegraph and Telephone Corporation
- Asuka MIYAKE
- F24 - HEATING RANGES VENTILATING
Information Patent Application
OPTICAL CONNECTOR PLUG, OPTICAL CONNECTOR AND MANUFACTURING METHOD...
- Publication number 20240272375
- Publication date Aug 15, 2024
- Nippon Telegraph and Telephone Corporation
- Yoshiteru ABE
- G02 - OPTICS
Information Patent Application
ULTRAVIOLET LIGHT TRANSMISSION SYSTEM
- Publication number 20240250757
- Publication date Jul 25, 2024
- Nippon Telegraph and Telephone Corporation
- Chisato Fukai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...
- Publication number 20240216559
- Publication date Jul 4, 2024
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...
- Publication number 20240181099
- Publication date Jun 6, 2024
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- G02 - OPTICS
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...
- Publication number 20240157003
- Publication date May 16, 2024
- Nippon Telegraph and Telephone Corporation
- Ayako IWAKI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
MODE CONVERSION DEVICE AND DESIGN METHOD
- Publication number 20240142696
- Publication date May 2, 2024
- Nippon Telegraph and Telephone Corporation
- Yoko YAMASHITA
- G02 - OPTICS
Information Patent Application
MULTICORE OPTICAL FIBER, METHOD OF DESIGNING MULTICORE OPTICAL FIBE...
- Publication number 20240118486
- Publication date Apr 11, 2024
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Application
EVALUATION METHOD AND EVALUATION DEVICE FOR MULTI-CORE FIBER
- Publication number 20240102886
- Publication date Mar 28, 2024
- Nippon Telegraph and Telephone Corporation
- Nobutomo HANZAWA
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
FIBER OPTIC AMPLIFIER
- Publication number 20240072507
- Publication date Feb 29, 2024
- Nippon Telegraph and Telephone Corporation
- Shinichi AOZASA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL FIBER
- Publication number 20240061168
- Publication date Feb 22, 2024
- Nippon Telegraph and Telephone Corporation
- Yuto SAGAE
- G02 - OPTICS
Information Patent Application
MULTICORE OPTICAL FIBER AND DESIGN METHOD
- Publication number 20240027678
- Publication date Jan 25, 2024
- Nippon Telegraph and Telephone Corporation
- Takashi Matsui
- G02 - OPTICS
Information Patent Application
APPARATUS AND METHODS FOR CALCULATING THE BEHAVIOR OF LINEAR STRUCT...
- Publication number 20240019323
- Publication date Jan 18, 2024
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL TRANSMISSION SYSTEM
- Publication number 20240007189
- Publication date Jan 4, 2024
- Nippon Telegraph and Telephone Corporation
- Yuto SAGAE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND METHOD
- Publication number 20230408761
- Publication date Dec 21, 2023
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
OPTICAL SIDE INPUT/OUTPUT CIRCUIT AND OPTICAL CONNECTOR
- Publication number 20230400625
- Publication date Dec 14, 2023
- Nippon Telegraph and Telephone Corporation
- Yoko YAMASHITA
- G02 - OPTICS
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...
- Publication number 20230390436
- Publication date Dec 7, 2023
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
OPTICAL SIDE INPUT/OUTPUT CIRCUIT AND OPTICAL CONNECTOR
- Publication number 20230358966
- Publication date Nov 9, 2023
- Nippon Telegraph and Telephone Corporation
- Yoko YAMASHITA
- G02 - OPTICS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND DESIGN METHOD
- Publication number 20230341618
- Publication date Oct 26, 2023
- Nippon Telegraph and Telephone Corporation
- Takashi MATSUI
- G02 - OPTICS
Information Patent Application
OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION METHOD
- Publication number 20230336338
- Publication date Oct 19, 2023
- Nippon Telegraph and Telephone Corporation
- Yuto SAGAE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LONG PERIOD FIBER GRATING AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20230324604
- Publication date Oct 12, 2023
- Nippon Telegraph and Telephone Corporation
- Ryota IMADA
- G02 - OPTICS
Information Patent Application
LIGHT IRRADIATION SYSTEM
- Publication number 20230310674
- Publication date Oct 5, 2023
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...
- Publication number 20230302173
- Publication date Sep 28, 2023
- Nippon Telegraph and Telephone Corporation
- Tomohiro TANIGUCHI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
OPTICAL CONNECTOR
- Publication number 20230305223
- Publication date Sep 28, 2023
- Nippon Telegraph and Telephone Corporation
- Yoko YAMASHITA
- G02 - OPTICS

Kazuhide Nakajima

Person

Patents Grantslast 30 patents

Long period fiber grating and optical transmission system

Propagation mode loss difference compensator

Multicore optical fiber and design method

Optical fiber evaluation device and optical fiber evaluation method

Optical transmission system

Multicore optical fiber and design method

Optical transmission system

Core position grasping method, connection method, and connection de...

Multicore optical fiber, method of designing multicore optical fibe...

Hole assisted optical fiber

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

Multicore optical fiber and design method

Optical communication system and optical communication method

Optical connector ferrule, sleeve, and method for manufacturing fer...

Multi-core fiber connector

Optical fiber and optical transmission system

Optical fiber manufacturing method using relative bulk densities

Optical amplifier

Optical fiber and optical transmission system

Connection device, optical connector manufacturing device, connecti...

Optical fiber design method

Optical fiber and optical transmission system

Inter-mode loss difference compensator and optical amplifier

Optical transmission system

Alignment apparatus and alignment method

Optical connector

Photonic crystal fiber and high-power light transmission system

Photonic crystal fiber and high-power light transmission system

Measuring method of longitudinal distribution of bending loss of op...

Crosstalk measuring method and crosstalk measuring device

Patents Applicationslast 30 patents

ULTRAVIOLET LIGHT IRRADIATION SHEET

PHOTOCATALYST SHEET

BANKNOTE STERILIZATION SYSTEM

OPTICAL SIDE INPUT/OUTPUT CIRCUIT

FIBER OPTIC CABLE

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND CONTROL METHOD

AIR CONDITIONING EQUIPMENT

OPTICAL CONNECTOR PLUG, OPTICAL CONNECTOR AND MANUFACTURING METHOD...

ULTRAVIOLET LIGHT TRANSMISSION SYSTEM

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...

MODE CONVERSION DEVICE AND DESIGN METHOD

MULTICORE OPTICAL FIBER, METHOD OF DESIGNING MULTICORE OPTICAL FIBE...

EVALUATION METHOD AND EVALUATION DEVICE FOR MULTI-CORE FIBER

FIBER OPTIC AMPLIFIER

OPTICAL FIBER

MULTICORE OPTICAL FIBER AND DESIGN METHOD

APPARATUS AND METHODS FOR CALCULATING THE BEHAVIOR OF LINEAR STRUCT...

OPTICAL TRANSMISSION SYSTEM

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND METHOD

OPTICAL SIDE INPUT/OUTPUT CIRCUIT AND OPTICAL CONNECTOR

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...

OPTICAL SIDE INPUT/OUTPUT CIRCUIT AND OPTICAL CONNECTOR

MULTI-CORE OPTICAL FIBER AND DESIGN METHOD

OPTICAL TRANSMISSION SYSTEM AND OPTICAL TRANSMISSION METHOD

LONG PERIOD FIBER GRATING AND OPTICAL TRANSMISSION SYSTEM

LIGHT IRRADIATION SYSTEM

ULTRAVIOLET LIGHT IRRADIATION SYSTEM AND ULTRAVIOLET LIGHT IRRADIAT...

OPTICAL CONNECTOR