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For the Inventor, By the Inventor

Kawasaki, Japan

Yasushi Sugaya

This inventor holds 95 USPTO granted patents and 2 published patent applications and 17 EPO patents, primarily in Optical Transmission (CPC class H01S3-00). Top assignees: Fujitsu Corporation, Fujitsu Telecom Networks Limited, Other. Active years: 1998-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasushi Sugaya. Retrieved from https://idiyas.com/inventor/yasushi-sugaya

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

USPTO Granted Patents = 95 

% Patents Active = 62.1

 

Average Co-Inventor Count = 2.4

ph-index = 17

Forward Citations = 991(Granted Patents)

Forward Citations (Not Self Cited) = 827(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kanagawa, JP (2002)
  • Kawasaki, JP (1998 - 2017)

Company Filing History:

goldMedal94 out of 39,374 
 
Fujitsu Corporation
 patents
silverMedal1 out of 42 
 
Fujitsu Telecom Networks Limited
 patents
bronzeMedal1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1998-2017

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Areas of Expertise:
Optical Transmission
Multi-Wavelength Amplifier
Wavelength Division Multiplexing
Optical Amplifier
Variable Optical Attenuator
Raman Amplifier
Optical Communication
Gain Control
Optical Device
Optical Transceiver
Optical Node
Transmission Method
95 patents (USPTO):Explore Patents
1. 9698902 - Optical transmission system and optical transmission device (2017-07-04),
2. 9143264 - Optical transmission device and optical transmission system (2015-09-22),
3. 9007680 - Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied (2015-04-14),
4. 8923694 - Optical receiving device (2014-12-30),
5. 8699126 - Multi-wavelength light amplifier (2014-04-15),
6. 8681420 - Optical transmission system (2014-03-25),
7. 8615167 - WDM optical transmission system and control method thereof (2013-12-24),
8. 8553319 - Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied (2013-10-08),
9. 8320040 - Multi-wavelength light amplifier (2012-11-27),
10. 8248689 - Distributed Raman amplifying system, start-up method thereof, and optical device (2012-08-21),
11. 8200090 - Optical transmission apparatus, optical transmission method, and optical transceiver (2012-06-12),
12. 8068730 - Wavelength division multiplex signal monitoring system and wavelength division multiplex transmission device equipped with the same (2011-11-29),
13. 8064130 - Optical amplifier (2011-11-22),
14. 8054455 - Optical amplifier provided with control function of pumping light, and optical transmission system using the same (2011-11-08),
15. 8049955 - Optical amplification apparatus, optical communication apparatus, and optical communication method (2011-11-01),

Title: Innovator Spotlight: Yasushi Sugaya - Pioneering Optical Transmission Technologies

Introduction:

Yasushi Sugaya, a prolific inventor hailing from Kawasaki, Japan, has made significant strides in the field of optical transmission systems. With an impressive portfolio boasting 95 patents, Sugaya's innovative work has reshaped the way we approach data transmission.

Latest Patents:

Sugaya's latest patents showcase his expertise in optical transmission systems. One notable invention is an optical transmission system that enables precise measurement of optical transmission characteristics between devices. Another groundbreaking patent involves an optical transmission device that dynamically adjusts transmission rates based on the number of active clients and signal quality.

Career Highlights:

Throughout his career, Sugaya has made invaluable contributions to renowned companies such as Fujitsu Corporation, where he honed his skills and expertise in optical communication technologies. His innovative spirit and dedication to advancing the field have cemented his reputation as a trailblazer in the industry.

Collaborations:

Sugaya has had the privilege of collaborating with esteemed colleagues such as Susumu Kinoshita and Etsuko Hayashi. Together, they have pushed the boundaries of optical transmission technologies, fostering a culture of innovation and excellence in their work.

Conclusion:

In conclusion, Yasushi Sugaya stands as a visionary inventor whose groundbreaking work in optical transmission systems has revolutionized the way we connect and communicate. With a rich legacy of patents and a passion for innovation, Sugaya continues to inspire the next generation of inventors in the dynamic field of optical communications.

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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