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For the Inventor, By the Inventor

Tokyo, Japan

Yuuki Yoshifuji

This inventor holds 11 USPTO granted patents. Top assignee: Nec Corporation. Active years: 1991-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuuki Yoshifuji. Retrieved from https://idiyas.com/inventor/yuuki-yoshifuji

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 8

Forward Citations = 193(Granted Patents)


Company Filing History:

goldMedal11 out of 36,684 
 
Nec Corporation
 patents

Years Active: 1991-2004

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11 patents (USPTO):Explore Patents
1. 6771907 - Optical ring system (2004-08-03),
2. 5917426 - Network system capable of managing connection data (1999-06-29),
3. 5825301 - Cross connect apparatus with routed path protecting function (1998-10-20),
4. 5631902 - Digital cross-connect system (1997-05-20),
5. 5592467 - Network node cross-connection device using selectable memories for new (1997-01-07),
6. 5586247 - Data updating system capable of partially recovering data (1996-12-17),
7. 5537405 - Cross-connecting module (1996-07-16),
8. 5450074 - Method for setting branch routes in a three-stage cross-connect switch (1995-09-12),
9. 5289340 - Structure of an electronic device including a number of printed circuit (1994-02-22),
10. 5200746 - Switching module for digital cross-connect systems (1993-04-06),
11. 5032837 - Method for expanding N.times.N three-stage switching network to (1991-07-16),

Title: Innovations of Yuuki Yoshifuji

Introduction

Yuuki Yoshifuji is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical systems and network technologies. With a total of 11 patents to his name, Yoshifuji continues to push the boundaries of innovation.

Latest Patents

One of his latest patents is an optical ring system. This system includes a wavelength demultiplexer that processes wavelength-multiplexed optical signals. It also features an optical ring device that judges the existence of failures in the optical signals and selects alternative paths for transmission. Another notable patent is a network system capable of managing connection data. This system renews or regenerates network connection data signals when disorders occur, ensuring efficient communication between network input and output terminals.

Career Highlights

Yoshifuji has had a successful career at NEC Corporation, where he has been instrumental in developing advanced technologies. His work has significantly impacted the telecommunications industry, particularly in enhancing network reliability and efficiency.

Collaborations

Throughout his career, Yoshifuji has collaborated with notable colleagues, including Shinya Nakamura and Kimio Ozawa. These partnerships have fostered innovation and contributed to the success of various projects.

Conclusion

Yuuki Yoshifuji's contributions to optical systems and network technologies exemplify his dedication to innovation. His patents reflect a commitment to improving communication systems, making him a key figure in his 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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