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For the Inventor, By the Inventor

Yokohama, Japan

Yoshiaki Terasawa

This inventor holds 19 USPTO granted patents. Top assignee: Sumitomo Electric Industries, Limited. Active years: 1990-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiaki Terasawa. Retrieved from https://idiyas.com/inventor/yoshiaki-terasawa

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

USPTO Granted Patents = 19

% Patents Active = 89.5

Average Co-Inventor Count = 3.0

ph-index = 9

Forward Citations = 264(Granted Patents)


Location History:

  • Kanagawa, JP (1990 - 1996)
  • Yokohama, JP (1998 - 2005)

Company Filing History:

goldMedal19 out of 10,641 
 
Sumitomo Electric Industries, Limited
 patents

Years Active: 1990-2005

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19 patents (USPTO):Explore Patents
1. 6840682 - Connection unit, optical fiber line unit, optical cable, and optical transmission system (2005-01-11),
2. 6533464 - Connection unit, optical fiber line unit, optical cable, and optical transmission system (2003-03-18),
3. 6446469 - MCVD method with GE depletion to form a single mode optical fiber (2002-09-10),
4. 6295843 - Method of making a single-mode optical fiber with multiple concentric core portions by using an outside vapor deposition process (2001-10-02),
5. 6067392 - Optical fiber diffraction grating, a method of fabricating thereof and a (2000-05-23),
6. 6062046 - Method of making a single-mode optical fiber with multiple concentric (2000-05-16),
7. 5946439 - Single-mode optical fiber (1999-08-31),
8. 5913005 - Single-mode optical fiber (1999-06-15),
9. 5822488 - Single-mode optical fiber with plural core portions (1998-10-13),
10. 5732178 - Single-mode optical fiber (1998-03-24),
11. 5559921 - Single mode optical fiber (1996-09-24),
12. 5358218 - Method of constructing an optical wiring network (1994-10-25),
13. 5328155 - Method and apparatus for laying and collecting a wire (1994-07-12),
14. 5263686 - Method and apparatus for laying and collecting a wire (1993-11-23),
15. 5163657 - Method and apparatus for laying and collecting a wire (1992-11-17),

Title: **Yoshiaki Terasawa: Innovator in Optical Transmission Technology**

Introduction

Yoshiaki Terasawa is a notable inventor based in Yokohama, Japan, recognized for his significant contributions to the field of optical transmission technology. With a total of 19 patents to his name, Terasawa has developed innovative solutions that enhance the efficiency and capacity of optical communication systems.

Latest Patents

Among his latest inventions are a connection unit, optical fiber line unit, optical cable, and optical transmission system. The primary objective of these patents is to improve transmission characteristics in optical networks. The connection unit designed by Terasawa is strategically positioned between multiple first optical fibers extending from an optical amplifier and a series of second optical fibers housed within an optical cable. This unit incorporates one or more optical components that facilitate connections between first and second optical fibers, ensuring minimal connection losses. Furthermore, each optical component consists of third and fourth optical fibers, which are engineered for low loss connections, along with a loss adjusting section intended to regulate transmission loss. Remarkably, the transmission loss deviation across multiple optical transmission lines is maintained at 0.005 dB/km or less, marking a significant advancement in optical transmission performance.

Career Highlights

Yoshiaki Terasawa is currently affiliated with Sumitomo Electric Industries, Limited, a leading company known for its innovative solutions in electrical and optical product development. His career is characterized by a focus on enhancing optical technology, which has had profound implications for telecommunications and data transmission.

Collaborations

Throughout his career, Terasawa has collaborated with esteemed colleagues, including Hiroaki Sano and Takatoshi Kato. Together, they have contributed to groundbreaking developments in optical communication, fostering a collaborative environment that drives innovation within their field.

Conclusion

Yoshiaki Terasawa stands out as a prominent inventor in the realm of optical technologies. With numerous patents and collaborative efforts with dedicated professionals, his work continues to influence the advancements in optical transmission systems. His dedication to improving transmission characteristics paves the way for more efficient and reliable communication networks, cementing his legacy as an innovator in the industry.

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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