Ryo Igarashi

This inventor holds 62 USPTO granted patents and 4 published patent applications, plus 2 CIPO patents and 7 EPO patents, primarily in Optical Communication (CPC class A47C). Top assignees: Okamura Corporation, Nippon Telegraph and Telephone Corporation, Toyota Jidosha Kabushiki Kaisha. Active years: 2005-2025.

USPTO Granted Patents = 62 (Patent Applications = 4)

% Patents Active = 91.9

CIPO Patents = 2

EPO Patents = 7 (Patent Applications = 7)

Average Co-Inventor Count = 1.4

ph-index = 23

Forward Citations = 1,308(Granted Patents)

Forward Citations (Not Self Cited) = 1,286(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Yokohama, JP (2006 - 2021)
Kanagawa, JP (2015 - 2021)
Tokyo, JP (2005 - 2022)
Susono, JP (2020 - 2022)
Tokyo-to, JP (2023)
Chofu, JP (2022 - 2024)
Musashino, JP (2023 - 2024)

Company Filing History:

Nippon Telegraph and Telephone Corporation

patents

14 out of 38,774

Toyota Jidosha Kabushiki Kaisha

patents

4. 1 out of 23,605

Amazon Technologies, Inc.

patents

Years Active: 2005-2025

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Areas of Expertise:

Optical Communication

Data Transmission

Location Estimation

Optical Receiver

Map Management

Optical Amplification

Autonomous Driving

Object Identification

Remote Monitoring

Optical Access

Map Updating

Optical Feeding

62 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12511939 - Photograph acquisition and object identification method and apparatus (2025-12-30),

2. 12437015 - Object identification and search range adjustment method and apparatus (2025-10-07),

3. 12368508 - Optical access system, optical transmitter, optical receiver, optical transmission method and demodulation method (2025-07-22),

4. 12283993 - Branch ratio calculation method, branch ratio calculation device and computer program (2025-04-21),

5. 12273147 - Coherent optical reception device and coherent optical reception method (2025-04-08),

6. 12206461 - Optical feeding system (2025-01-21),

7. 12199664 - Light leakage confirmation method, light leakage confirmation apparatus and program (2025-01-14),

8. 12160274 - Optical receiving device and optical receiving method (2024-12-03),

9. 12143157 - Branch ratio setting system, method for producing optical communication system and optical branch device (2024-11-12),

10. 12119869 - Optical amplification estimation method, optical amplification estimation apparatus and computer program (2024-10-15),

11. 12047710 - Remote monitoring device, remote monitoring system, and remote monitoring method (2024-07-23),

12. 12021567 - Optical receiving device and clock synchronization method (2024-06-25),

13. 11933629 - Map data updating device and storage medium storing computer program for map data updating (2024-03-19),

14. 11870497 - Optical receiving apparatus, optical transmission system, optical transmission method and computer program (2024-01-09),

15. 11863211 - Optical communication system and optical communication method (2024-01-02),

Title: Ryo Igarashi: Pioneering Inventor from Yokohama

Introduction: Ryo Igarashi is a distinguished inventor hailing from Yokohama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Ryo Igarashi holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With over two decades of experience in the tech industry, Ryo Igarashi has worked with leading companies to develop cutting-edge solutions that have revolutionized various sectors.

Collaborations: Throughout his career, Ryo Igarashi has collaborated with top researchers, engineers, and scientists globally, fostering a culture of innovation and knowledge-sharing.

Conclusion: Ryo Igarashi's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and shape the future of technology.