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For the Inventor, By the Inventor

Musashino, Japan

Ryo Igarashi

This inventor holds 5 USPTO granted patents. Top assignee: Ntt Corporation. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryo Igarashi. Retrieved from https://idiyas.com/inventor/ryo-igarashi-hz4sgar2

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

USPTO Granted Patents = 5

% Patents Active = 40.0

Average Co-Inventor Count = 2.8

ph-index = 1


Company Filing History:

goldMedal5 out of 612 
 
Ntt Corporation
 patents

Years Active: 2025-2026

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5 patents (USPTO):Explore Patents
1. 12771452 - Signal strength flattening method and relay node (2026-10-20),
2. 12761312 - Decision device, decision method, mobile terminal, control method, location notification system, and location notification method (2026-10-13),
3. 12587283 - Receiving apparatus and receiving method (2026-03-24),
4. 12556285 - Optical transmitter and frequency control method in optical transmission (2026-02-17),
5. 12445205 - Coherent optical reception device and coherent optical reception method (2025-10-14),

Title: Ryo Igarashi: Innovator in Optical Transmission Technology

Introduction

Ryo Igarashi is a prominent inventor based in Musashino, Japan. He has made significant contributions to the field of optical transmission technology, holding a total of 5 patents. His work focuses on enhancing the efficiency and effectiveness of signal transmission through innovative methods and apparatus.

Latest Patents

Igarashi's latest patents include a receiving apparatus and method that revolutionizes how signal light is processed. This invention features a reception unit that receives frequency-modulated signal light and converts it into an analog electric signal. The processing unit then acquires a code sequence corresponding to the control signal based on this analog signal. Another notable patent is for an optical transmission apparatus that includes an optical transmitter. This device generates an optical signal in an uplink direction by modulating laser output light, while also incorporating a heterodyne detection unit for downlink signal reception.

Career Highlights

Ryo Igarashi is currently employed at NTT Corporation, where he continues to develop cutting-edge technologies in optical communications. His work has been instrumental in advancing the capabilities of optical transmission systems, making them more reliable and efficient.

Collaborations

Igarashi has collaborated with notable colleagues such as Masamichi Fujiwara and Takuya Kanai. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Ryo Igarashi's contributions to optical transmission technology exemplify his dedication to innovation. His patents reflect a deep understanding of signal processing and communication systems, positioning him as a key figure in the field.

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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