Tetsuya Hayashi

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 12,360,309
- Issue date Jul 15, 2025
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Optical waveguide device and optical communication system including...
- Patent number 12,339,496
- Issue date Jun 24, 2025
- Sumitomo Electric Industries, Ltd.
- Yuki Arao
- G01 - MEASURING TESTING
Information Patent Grant
Semiconductor device, power module and manufacturing method for the...
- Patent number 12,328,884
- Issue date Jun 10, 2025
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method for manufacturing same
- Patent number 12,068,411
- Issue date Aug 20, 2024
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical connection device
- Patent number 12,013,571
- Issue date Jun 18, 2024
- Sumitomo Electric Industries, Ltd.
- Yuki Arao
- G02 - OPTICS
Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 12,007,601
- Issue date Jun 11, 2024
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device and method of manufacturing semiconductor device
- Patent number 11,996,442
- Issue date May 28, 2024
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 11,973,135
- Issue date Apr 30, 2024
- Nissan Motor Co., Ltd.
- Keisuke Takemoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and manufacturing method thereof
- Patent number 11,973,108
- Issue date Apr 30, 2024
- Nissan Motor Co., Ltd.
- Wei Ni
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method for manufacturing same
- Patent number 11,881,526
- Issue date Jan 23, 2024
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 11,828,978
- Issue date Nov 28, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device and method of manufacturing semiconductor device
- Patent number 11,756,994
- Issue date Sep 12, 2023
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mode-dependent loss measurement device and mode-dependent loss meas...
- Patent number 11,754,466
- Issue date Sep 12, 2023
- Sumitomo Electric Industries, Ltd.
- Takemi Hasegawa
- G01 - MEASURING TESTING
Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 11,675,121
- Issue date Jun 13, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device, power module and method for manufacturing the...
- Patent number 11,664,466
- Issue date May 30, 2023
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for producing sintered member, and sintered member
- Patent number 11,623,275
- Issue date Apr 11, 2023
- Sumitomo Electric Sintered Alloy, Ltd.
- Keiichi Uemoto
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 11,604,312
- Issue date Mar 14, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Iron-based sintered body
- Patent number 11,591,681
- Issue date Feb 28, 2023
- Sumitomo Electric Industries, Ltd.
- Tomoyuki Ueno
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Multi-core optical fiber and multi-core optical fiber cable
- Patent number 11,561,340
- Issue date Jan 24, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device and manufacturing method thereof
- Patent number 11,557,647
- Issue date Jan 17, 2023
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and method for manufacturing the same
- Patent number 11,557,674
- Issue date Jan 17, 2023
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-core optical fiber
- Patent number 11,480,727
- Issue date Oct 25, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device and method of manufacturing semiconductor device
- Patent number 11,476,326
- Issue date Oct 18, 2022
- Nissan Motor Co., Ltd.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
State analysis device, state analysis method, and storage medium
- Patent number 11,347,811
- Issue date May 31, 2022
- Kabushiki Kaisha Toshiba
- Tetsuya Hayashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for controlling resonance-type power converter, resonance-ty...
- Patent number 11,342,841
- Issue date May 24, 2022
- Nissan Motor Co., Ltd.
- Toshihiro Kai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Optical amplifier and multi-core optical fiber
- Patent number 11,322,904
- Issue date May 3, 2022
- Sumitomo Electric Industries, Ltd.
- Takemi Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-core optical fiber
- Patent number 11,314,015
- Issue date Apr 26, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Optical amplifier and multi-core optical fiber
- Patent number 11,316,316
- Issue date Apr 26, 2022
- Sumitomo Electric Industries, Ltd.
- Takemi Hasegawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multicore optical fiber and multicore optical fiber cable
- Patent number 11,256,026
- Issue date Feb 22, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G02 - OPTICS
Information Patent Grant
Semiconductor device with reduced thermal resistance
- Patent number 11,251,162
- Issue date Feb 15, 2022
- Nissan Motor Co., Ltd.
- Kenta Emori
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...
- Publication number 20250209664
- Publication date Jun 26, 2025
- FUJIFILM CORPORATION
- Tetsuya HAYASHI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MULTICORE OPTICAL FIBER, OPTICAL COMBINER, AND METHOD OF MEASURING...
- Publication number 20250189717
- Publication date Jun 12, 2025
- Sumitomo Electric Industries, Ltd.
- Yuto KOBAYASHI
- G01 - MEASURING TESTING
Information Patent Application
MULTI-CORE OPTICAL FIBER
- Publication number 20250172745
- Publication date May 29, 2025
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...
- Publication number 20250148775
- Publication date May 8, 2025
- FUJIFILM CORPORATION
- Tetsuya HAYASHI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20240288627
- Publication date Aug 29, 2024
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER PRODUCTION METHOD, OPTICAL FIBER, OPTICAL FIBER RIBBO...
- Publication number 20240254032
- Publication date Aug 1, 2024
- Sumitomo Electric Industries, Ltd.
- Junya TAKANO
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
MULTI-CORE OPTICAL FIBER AND CORE IDENTIFICATION METHOD
- Publication number 20240176063
- Publication date May 30, 2024
- Sumitomo Electric Industries, Ltd.
- Takahiro SUGANUMA
- G02 - OPTICS
Information Patent Application
POLARIZATION MAINTAINING OPTICAL FIBER AND POLARIZATION MAINTAINING...
- Publication number 20240085618
- Publication date Mar 14, 2024
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
- Publication number 20240055475
- Publication date Feb 15, 2024
- NISSAN MOTOR CO., LTD.
- Wei NI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME
- Publication number 20230411516
- Publication date Dec 21, 2023
- NISSAN MOTOR CO., LTD.
- Toshiharu Marui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTICORE OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20230333312
- Publication date Oct 19, 2023
- Sumitomo Electric Industries, Ltd.
- Takahiro SUGANUMA
- G02 - OPTICS
Information Patent Application
MULTICORE OPTICAL FIBER
- Publication number 20230288631
- Publication date Sep 14, 2023
- Sumitomo Electric Industries, Ltd.
- Hirotaka SAKUMA
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR DEVICE, POWER MODULE AND MANUFACTURING METHOD FOR THE...
- Publication number 20230253512
- Publication date Aug 10, 2023
- Nissan Motor Co., Ltd.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20230185017
- Publication date Jun 15, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20230119038
- Publication date Apr 20, 2023
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE DEVICE AND OPTICAL COMMUNICATION SYSTEM INCLUDING...
- Publication number 20230106774
- Publication date Apr 6, 2023
- Sumitomo Electric Industries, Ltd.
- Yuki ARAO
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
- Publication number 20230074093
- Publication date Mar 9, 2023
- Nissan Motor Co., Ltd.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
- Publication number 20230013819
- Publication date Jan 19, 2023
- Nissan Motor Co., Ltd.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL CONNECTION DEVICE
- Publication number 20220413221
- Publication date Dec 29, 2022
- Sumitomo Electric Industries, Ltd.
- Yuki ARAO
- G02 - OPTICS
Information Patent Application
MANUFACTURING SYSTEM AND MANUFACTURING METHOD OF SINTERED PRODUCT
- Publication number 20220176448
- Publication date Jun 9, 2022
- SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
- Shin NOGUCHI
- B22 - CASTING POWDER METALLURGY
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20220120962
- Publication date Apr 21, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20220120963
- Publication date Apr 21, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20220113467
- Publication date Apr 14, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
- Publication number 20220085157
- Publication date Mar 17, 2022
- NISSAN MOTOR CO., LTD.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE
- Publication number 20220066091
- Publication date Mar 3, 2022
- Sumitomo Electric Industries, Ltd.
- Tetsuya HAYASHI
- G02 - OPTICS
Information Patent Application
MODE-DEPENDENT LOSS MEASUREMENT DEVICE AND MODE-DEPENDENT LOSS MEAS...
- Publication number 20210372882
- Publication date Dec 2, 2021
- Sumitomo Electric Industries, Ltd.
- Takemi HASEGAWA
- G02 - OPTICS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME
- Publication number 20210367070
- Publication date Nov 25, 2021
- NISSAN MOTOR CO., LTD.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20210313466
- Publication date Oct 7, 2021
- NISSAN MOTOR CO., LTD.
- Toshiharu MARUI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PHOTOVOLTAIC DEVICE
- Publication number 20210305524
- Publication date Sep 30, 2021
- NISSAN MOTOR CO., LTD.
- Yuji SAITO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-CORE OPTICAL FIBER
- Publication number 20210294025
- Publication date Sep 23, 2021
- Sumitomo Electric Industries, Ltd.
- Tetsuya Hayashi
- G01 - MEASURING TESTING

Tetsuya Hayashi

Person

Patents Grantslast 30 patents

Multi-core optical fiber and multi-core optical fiber cable

Optical waveguide device and optical communication system including...

Semiconductor device, power module and manufacturing method for the...

Semiconductor device and method for manufacturing same

Optical connection device

Multi-core optical fiber and multi-core optical fiber cable

Semiconductor device and method of manufacturing semiconductor device

Semiconductor device

Semiconductor device and manufacturing method thereof

Semiconductor device and method for manufacturing same

Multi-core optical fiber and multi-core optical fiber cable

Semiconductor device and method of manufacturing semiconductor device

Mode-dependent loss measurement device and mode-dependent loss meas...

Multi-core optical fiber and multi-core optical fiber cable

Semiconductor device, power module and method for manufacturing the...

Method for producing sintered member, and sintered member

Multi-core optical fiber and multi-core optical fiber cable

Iron-based sintered body

Multi-core optical fiber and multi-core optical fiber cable

Semiconductor device and manufacturing method thereof

Semiconductor device and method for manufacturing the same

Multi-core optical fiber

Semiconductor device and method of manufacturing semiconductor device

State analysis device, state analysis method, and storage medium

Method for controlling resonance-type power converter, resonance-ty...

Optical amplifier and multi-core optical fiber

Multi-core optical fiber

Optical amplifier and multi-core optical fiber

Multicore optical fiber and multicore optical fiber cable

Semiconductor device with reduced thermal resistance

Patents Applicationslast 30 patents

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...

MULTICORE OPTICAL FIBER, OPTICAL COMBINER, AND METHOD OF MEASURING...

MULTI-CORE OPTICAL FIBER

INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AN...

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

OPTICAL FIBER PRODUCTION METHOD, OPTICAL FIBER, OPTICAL FIBER RIBBO...

MULTI-CORE OPTICAL FIBER AND CORE IDENTIFICATION METHOD

POLARIZATION MAINTAINING OPTICAL FIBER AND POLARIZATION MAINTAINING...

SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF

SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME

MULTICORE OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM

MULTICORE OPTICAL FIBER

SEMICONDUCTOR DEVICE, POWER MODULE AND MANUFACTURING METHOD FOR THE...

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

OPTICAL WAVEGUIDE DEVICE AND OPTICAL COMMUNICATION SYSTEM INCLUDING...

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

OPTICAL CONNECTION DEVICE

MANUFACTURING SYSTEM AND MANUFACTURING METHOD OF SINTERED PRODUCT

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

MULTI-CORE OPTICAL FIBER AND MULTI-CORE OPTICAL FIBER CABLE

MODE-DEPENDENT LOSS MEASUREMENT DEVICE AND MODE-DEPENDENT LOSS MEAS...

SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME

SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME

PHOTOVOLTAIC DEVICE

MULTI-CORE OPTICAL FIBER