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For the Inventor, By the Inventor

Shizuoka, Japan

Tsuguhito Shirakawa

This inventor holds 13 USPTO granted patents. Top assignee: Yazaki Corporation. Active years: 1999-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsuguhito Shirakawa. Retrieved from https://idiyas.com/inventor/tsuguhito-shirakawa

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 7

Forward Citations = 233(Granted Patents)


Company Filing History:

goldMedal13 out of 8,381 
 
Yazaki Corporation
 patents

Years Active: 1999-2004

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13 patents (USPTO):Explore Patents
1. 6695490 - Optical ring network, optical connector, and hybrid connector (2004-02-24),
2. 6663292 - Optical connector and an assembly method of optical plug (2003-12-16),
3. 6652154 - Optical connector (2003-11-25),
4. 6499889 - Method of assembling optical connector, optical connector and hybrid connector (2002-12-31),
5. 6485194 - Optical connector (2002-11-26),
6. 6450703 - Receptacle of optical connector (2002-09-17),
7. 6416233 - Optical fiber connector (2002-07-09),
8. 6390687 - Optical ring network, optical connector, and hybrid connector (2002-05-21),
9. 6357931 - Hybrid connector (2002-03-19),
10. 6341899 - Hybrid connector (2002-01-29),
11. 6325548 - Optical fiber-fixing structure of ferrule for provisionally fitting an optical fiber (2001-12-04),
12. 6302591 - Optical fiber connector (2001-10-16),
13. 5904582 - Structure for altering bus bar circuits (1999-05-18),

Title: Tsuguhito Shirakawa: Innovator in Optical Technology

Introduction

Tsuguhito Shirakawa is a prominent inventor based in Shizuoka, Japan. He has made significant contributions to the field of optical technology, holding a total of 13 patents. His work focuses on enhancing optical connectivity and improving the efficiency of optical networks.

Latest Patents

Shirakawa's latest patents include innovations such as an optical ring network, an optical connector, and a hybrid connector. These inventions allow for the leading-out direction of an optical fiber to be changed without negatively impacting the light transmitted through the fiber. The optical plug, which serves as an optical connector, features a pair of ferrules attached to the ends of optical fibers and an optical adapter that accommodates the end portions of the fibers. Additionally, directing members are secured to the ferrules to guide the optical fibers out of the adapter.

Another notable patent involves an optical connector designed as an optical plug. This invention includes an optical fiber cable, a ferrule connected to the cable, and a spring that presses the ferrule. The plug housing accommodates the ferrule assembly and spring, while a spring cap supports the other end of the spring. This design allows for both straight and curved paths for the optical fiber cable, enhancing its versatility.

Career Highlights

Tsuguhito Shirakawa is currently employed at Yazaki Corporation, where he continues to innovate in the field of optical technology. His work has been instrumental in advancing the capabilities of optical connectors and networks.

Collaborations

Shirakawa has collaborated with notable coworkers, including Nobuyuki Akeda and Toshiharu Takahashi. Their combined expertise has contributed to the development of cutting-edge optical technologies.

Conclusion

Tsuguhito Shirakawa's contributions to optical technology through his numerous patents highlight his role as a leading inventor in this field. His innovative designs continue to shape the future of optical connectivity.

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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