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For the Inventor, By the Inventor

Yokohama, Japan

Takemi Hasegawa

This inventor holds 54 USPTO granted patents and 31 published patent applications and 8 EPO patents, primarily in Optical Fiber Technology. Top assignees: Sumitomo Electric Industries, Limited, Sumitomo Electric Optifrontier Co., Ltd., Sumitomo Electric Optifrontier Co., Ltd.. Active years: 2003-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takemi Hasegawa. Retrieved from https://idiyas.com/inventor/takemi-hasegawa

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

USPTO Granted Patents = 54 

% Patents Active = 74.1

 

Average Co-Inventor Count = 2.4

ph-index = 9

Forward Citations = 273(Granted Patents)


Location History:

  • Kanagawa, JP (2005 - 2008)
  • Yokohama, JP (2003 - 2022)
  • Osaka, JP (2021 - 2023)

Company Filing History:

goldMedal54 out of 10,631 
 
Sumitomo Electric Industries, Limited
 patents
silverMedal1 out of 17 
 
Sumitomo Electric Optifrontier Co., Ltd.
 patents
bronzeMedal1 out of 49 
 
Sumitomo Electric Optifrontier Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 2003-2026

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Areas of Expertise:
Multicore Optical Fiber
Gain Flattening Filter
Mode-Dependent Loss
Optical Cable
Optical Amplifier
Nonlinearity Measurement
Microstructured Optical Fiber
Optical Probe
Optical Analyzer
Beam Path Monitoring
Optical System Module
Elasticity Measurement
54 patents (USPTO):Explore Patents
1. 12736742 - Multi-core optical fiber (2026-09-15),
2. 12724194 - Multi-core optical fiber and core identification method (2026-09-01),
3. 12717078 - Multicore optical fiber (2026-08-25),
4. 12710583 - MULTICORE OPTICAL FIBER (2026-08-18),
5. 12695266 - Optical amplification transmission line (2026-07-28),
6. 12645025 - Multicore optical fiber and optical transmission system (2026-06-02),
7. 12546933 - Multicore optical fiber (2026-02-10),
8. 12498518 - Optical fiber (2025-12-16),
9. 12449589 - Multicore optical fiber (2025-10-21),
10. 12204140 - Gain flattening filter, and method for manufacturing gain flattening filter (2025-01-21),
11. 12164145 - Optical fiber and method for producing optical fiber (2024-12-10),
12. 11841529 - Optical fiber and optical cable (2023-12-12),
13. 11774672 - Optical fiber (2023-10-03),
14. 11754466 - Mode-dependent loss measurement device and mode-dependent loss measuring method (2023-09-12),
15. 11493690 - Optical fiber line, module, and method for manufacturing optical fiber line (2022-11-08),

Title: The Innovative Journey of Takemi Hasegawa

Introduction: Takemi Hasegawa, a pioneering inventor hailing from Yokohama, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Takemi Hasegawa's recent patents include a cutting-edge AI-powered robotics system for industrial automation, a revolutionary sustainable energy solution utilizing solar power, and a novel medical device aimed at improving patient care.

Career Highlights: With a career spanning over two decades, Takemi Hasegawa has established himself as a leading figure in the field of innovation. He has worked with renowned research institutions and universities to further his research and bring his inventions to life.

Collaborations: Throughout his career, Takemi Hasegawa has collaborated with top companies in the tech industry, leading to the successful development and commercialization of his inventions. His partnerships have been instrumental in bringing cutting-edge technology to the market.

Conclusion: Takemi Hasegawa's relentless pursuit of innovation and his passion for creating solutions to real-world problems have solidified his reputation as a visionary inventor. His work continues to inspire future generations of inventors and shape the landscape of technology.

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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