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For the Inventor, By the Inventor

Tokyo, Japan

Shigeyuki Yanagimachi

This inventor holds 19 USPTO granted patents and 14 published patent applications and 1 EPO patent, primarily in Optical Communication. Top assignees: Nec Corporation, National University Corporation Tokai National Higher Education and Research System. Active years: 1998-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeyuki Yanagimachi. Retrieved from https://idiyas.com/inventor/shigeyuki-yanagimachi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 19 

% Patents Active = 78.9

 

Average Co-Inventor Count = 2.4

ph-index = 2

Forward Citations = 31(Granted Patents)


Company Filing History:

goldMedal19 out of 36,718 
 
Nec Corporation
 patents
silverMedal1 out of 130 
 
National University Corporation Tokai National Higher Education and Research System
 patents
where one patent can have more than one assignee

Years Active: 1998-2026

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Areas of Expertise:
Optical Communication
Wavelength Conversion
Optical Amplifier
Network Management
Optical Transmission
Optical Fiber
Control Device
Multicore Fiber
Transmission System
Packet Communication
Photoelectric Conversion
Positioning Control
19 patents (USPTO):Explore Patents
1. 12665672 - Information processing apparatus, information processing method, program, and optical communication system (2026-06-23),
2. 12647703 - Wavelength conversion apparatus, optical transmission apparatus, and wavelength conversion method (2026-06-02),
3. 12401423 - Optical network, network management device, and network management method (2025-08-26),
4. 12308599 - Optical amplifier, optical amplifier equalizing method, and transmission system (2025-05-20),
5. 12095502 - Communication device, communication controlling method, non-transitory computer-readable medium, and optical communication system (2024-09-17),
6. 11881675 - Optical amplification device, optical transmission system, and optical amplification method (2024-01-23),
7. 11870208 - Optical fiber amplifier, optical fiber amplifier control method, and transmission system (2024-01-09),
8. 11824320 - Optical amplifier, and control method therefor (2023-11-21),
9. 11695630 - Control device, control system, network system, control method, and computer-readable medium (2023-07-04),
10. 11671196 - Optical network management device, optical network system, optical network management method, and optical network management program (2023-06-06),
11. 11398711 - Multicore optical fiber amplifier and optical amplification method using multicore optical fiber amplification medium (2022-07-26),
12. 11374377 - Optical amplifying apparatus and method of amplifying optical signal (2022-06-28),
13. 11329444 - Optical amplifier and control method therefor (2022-05-10),
14. 11212027 - Optical path setting device, optical communication system, and optical path setting method (2021-12-28),
15. 11115117 - Submarine optical communication control device, control method, and non-transitory computer-readable medium (2021-09-07),

Title: Shigeyuki Yanagimachi: Innovator in Optical Network Technologies

Introduction

Shigeyuki Yanagimachi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical networks, holding a total of 19 patents. His work focuses on enhancing network management and transmission systems through innovative optical technologies.

Latest Patents

Yanagimachi's latest patents include advancements in optical networks and network management devices. One notable patent describes a network using multi-core fibers (MCF) that enables the easy construction of standby system paths. This optical network features an active system path connected by a first multi-core optical fiber, facilitating communication between transmission and reception nodes. Additionally, the standby system path is composed of multiple second multi-core optical fibers, allowing for seamless switching between paths.

Another significant patent involves an optical amplifier designed to amplify wavelength multiplexed signal light. This invention includes a multi-core optical fiber doped with rare-earth ions, an excitation light source, and a wavelength demultiplexing means. The system efficiently separates and processes various wavelength bands, enhancing the overall performance of optical transmission systems.

Career Highlights

Shigeyuki Yanagimachi is currently associated with NEC Corporation, where he continues to develop cutting-edge technologies in optical networking. His expertise and innovative approach have positioned him as a key figure in the industry.

Collaborations

Throughout his career, Yanagimachi has collaborated with notable professionals, including Emmanuel Le Taillandier De Gabory and Keiichi Matsumoto. These collaborations have further enriched his work and contributed to advancements in optical technologies.

Conclusion

Shigeyuki Yanagimachi's contributions to optical network technologies have significantly impacted the field. His innovative patents and collaborations reflect his dedication to advancing communication systems. His work continues to inspire future developments in optical networking.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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