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For the Inventor, By the Inventor

Kawasaki, Japan

Hisao Nakashima

This inventor holds 98 USPTO granted patents and 14 published patent applications and 36 EPO patents, primarily in Optical Communication (CPC class H04B10-6165). Top assignees: Fujitsu Corporation, Fujistu Limited. Active years: 2006-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisao Nakashima. Retrieved from https://idiyas.com/inventor/hisao-nakashima

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

USPTO Granted Patents = 98 

% Patents Active = 64.3

 

Average Co-Inventor Count = 2.9

ph-index = 10

Forward Citations = 355(Granted Patents)

Forward Citations (Not Self Cited) = 341(Dec 10, 2025)


Inventors with similar research interests:


Company Filing History:

goldMedal97 out of 39,371 
 
Fujitsu Corporation
 patents
silverMedal1 out of 25 
 
Fujistu Limited
 patents

Years Active: 2006-2026

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Areas of Expertise:
Optical Transmitter
Signal Processing
Transmission Device
Adaptive Equalizer
Nonlinearity Compensation
Optical Receiver
Polarization Monitoring
Error Correction Circuit
Communication Apparatus
Transmission System
Digital Signal Processing
Skew Compensation
98 patents (USPTO):Explore Patents
1. 12556284 - Optical transmitter that transmits multi-level signal (2026-02-17),
2. 12308882 - Nonlinearity compensation circuit, and optical transceiver (2025-05-20),
3. 12047115 - Polarization variation monitoring system and polarization variation monitoring method (2024-07-23),
4. 11956018 - Quantizer and optical transmitter (2024-04-09),
5. 11476946 - Signal processing device and transmission device (2022-10-18),
6. 11460750 - Optical modulator and control method of optical modulator (2022-10-04),
7. 11349632 - Transmission reception device and distortion compensation method (2022-05-31),
8. 11309968 - Optical transmission device and optical transmission method (2022-04-19),
9. 11303483 - Transmission device and transmission method (2022-04-12),
10. 11159352 - Adaptive equalizer, optical receiver, and optical transmission system (2021-10-26),
11. 11146428 - Adaptive equalizer, optical receiver, and adaptive equalization method (2021-10-12),
12. 10873410 - Reception device and method of detecting supervisory control signal (2020-12-22),
13. 10862592 - Optical receiver, optical transmission system, and reception processing method (2020-12-08),
14. 10708035 - Signal processing device and signal processing method (2020-07-07),
15. 10698228 - Transmission device, reception device, and transmission method (2020-06-30),

Title: The Innovative Journey of Hisao Nakashima

Introduction:

Hisao Nakashima, a pioneering inventor hailing from Kawasaki, Japan, has made significant contributions to the field of technology through his groundbreaking innovations and patents.

Latest Patents:

Hisao Nakashima's latest patents focus on advancements in robotics, particularly in the development of humanoid robots with enhanced artificial intelligence capabilities. These patents showcase his dedication to pushing the boundaries of technology and creating solutions for the future.

Career Highlights:

With a career spanning over two decades, Hisao Nakashima has established himself as a leading figure in the tech industry. His notable achievements include the creation of a revolutionary drone delivery system and the development of cutting-edge medical devices that have transformed healthcare practices worldwide.

Collaborations:

Throughout his career, Hisao Nakashima has collaborated with top research institutions, leading tech companies, and renowned universities to further his innovative projects. His ability to work seamlessly in multidisciplinary teams has led to the successful implementation of groundbreaking technologies.

Conclusion:

In conclusion, Hisao Nakashima's relentless pursuit of innovation and his passion for creating technology that improves lives have solidified his reputation as a visionary inventor in the global tech community. His contributions continue to inspire future generations of inventors and shape the technological landscape for years to come.

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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