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For the Inventor, By the Inventor

Osaka, Japan

Takayuki Funamoto

This inventor holds 20 USPTO granted patents, primarily in Silent Chain Technology. Top assignee: Tsubakimoto Chain Company. Active years: 1999-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takayuki Funamoto. Retrieved from https://idiyas.com/inventor/takayuki-funamoto

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

USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 6.4

ph-index = 8

Forward Citations = 161(Granted Patents)


Location History:

  • Hanno, JP (1999 - 2000)
  • Saitama-ken, JP (2000)
  • Osaka, JP (2001 - 2004)

Company Filing History:

goldMedal20 out of 914 
 
Tsubakimoto Chain Company
 patents

Years Active: 1999-2004

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Areas of Expertise:
Silent Chain
Power Transmission
Rocker Joint
Noise Reduction
Wear-Resistant
Guide Plate
Joint Structure
Rocker Pin
20 patents (USPTO):Explore Patents
1. 6796920 - Silent chain power transmission apparatus (2004-09-28),
2. 6589127 - Silent chain with rocker joint pins (2003-07-08),
3. 6572503 - Rocker joint silent chain (2003-06-03),
4. 6533691 - Low noise silent chain (2003-03-18),
5. 6494800 - Wear-resistant silent chain (2002-12-17),
6. 6435996 - Silent chain (2002-08-20),
7. 6432011 - Silent chain (2002-08-13),
8. 6416436 - Silent chain power transmitting device (2002-07-09),
9. 6393819 - Rocker pin and wire stock for producing the same (2002-05-28),
10. 6387003 - Chain with improved rocker pin joint structure (2002-05-14),
11. 6383105 - Guide plate for a silent chain (2002-05-07),
12. 6325735 - Silent chain (2001-12-04),
13. D449416 - Silent chain (2001-10-17),
14. 6277046 - Silent chain (2001-08-21),
15. 6272835 - Silent chain (2001-08-14),

Title: **The Innovative Contributions of Takayuki Funamoto in Power Transmission Technology**

Introduction

Takayuki Funamoto is a prominent inventor based in Osaka, Japan, renowned for his significant advancements in power transmission technology. With a total of 20 patents to his name, Funamoto has made noteworthy contributions that enhance the efficiency and performance of silent chain mechanisms.

Latest Patents

Funamoto's latest innovations include the development of a silent chain power transmission apparatus. This apparatus features a design where the inside tooth faces of the link plates of the chain mirror the tooth profiles of a hob cutter used for forming the sprocket teeth. The intricate design also ensures that specific geometrical relationships among the components, such as Hi, Ho, and Hs, are maintained to optimize performance.

Another recent invention is the silent chain with rocker joint pins, which showcases a unique arrangement of alternating guide link rows and joint link rows joined by rocker joint pins. The longer pins utilized in this chain are designed to acquire spring-like properties when the chain is under load, thus reducing operational noise and enhancing the overall strength of the chain.

Career Highlights

Funamoto is associated with Tsubakimoto Chain Company, a leading entity in the power transmission field. Throughout his career, his innovative designs have significantly influenced the company’s product offerings and technological advancements.

Collaborations

In his pursuit of innovation, Funamoto has collaborated with notable colleagues such as Shigekazu Fukuda and Hiroshi Horie. Together, they have worked on enhancing product functionalities and pushing the boundaries of current technology in the industry.

Conclusion

Takayuki Funamoto's contributions to silent chain technology exemplify his commitment to innovation. With a robust portfolio of patents and collaborations, he continues to play a vital role in advancing the field of power transmission, making significant impacts on both his company and the industry at large.

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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