For the Inventor, By the Inventor

Enter assignee name

Bridgestone Cycle Co., Ltd.

Calculating rank

USPTO Granted Patents = 37

Trademarks = 1

Forward Citations = 579

Loading Chart...

Loading Chart...

34 inventors (with patents filed for the assignee):

Kikuzo Takamiya (19 out of 19 patents)

Hideyuki Ishibashi (8 out of 8 patents)

Kunitoshi Kozakae (8 out of 8 patents)

4. Yoshitaka Tamura (8 out of 8 patents)

5. Kiyofumi Hirai (6 out of 6 patents)

6. Ritsuo Nishimura (3 out of 3 patents)

7. Nobuaki Shimada (3 out of 3 patents)

8. Hiroshi Todoroki (3 out of 3 patents)

9. Yoshihisa Iwasaki (3 out of 11 patents)

10. Koichi Tagawa (2 out of 12 patents)

11. Tohru Takeda (2 out of 2 patents)

12. Sadao Mabuchi (2 out of 2 patents)

13. Mitsuo Tanaka (2 out of 2 patents)

14. Yasunori Ishibashi (1 out of 3 patents)

15. Yoichi Shibayama (1 out of 1 patent)

Core Competencies:

Vulcanizer

Bicycle Speed Change System

Bicycle Frame Assembly

Friction-Type Stepless Speed Change Device

Built-In Generator

Wheel Rim

Brake

Adjustable Handlebar

Power Transmission Mechanism

Foldable Bicycle Frame

Caliper Brake

37 patents: Sort by Forward Citations

1. 5466139 - Vulcanizer (1995-11-14),

2. 5421219 - Bicycle speed change system, bicycle speed change method and bicycle (1995-06-06),

3. 5390565 - Bicycle speed change system, bicycle speed change method and bicycle (1995-02-21),

4. 5380252 - Bicycle speed change assembly (1995-01-10),

5. 5370411 - Bicycle frame assembly (1994-12-06),

6. 5253890 - Bicycle frame (1993-10-19),

7. 5238458 - Bicycle speed change assembly (1993-08-24),

8. 5163884 - Friction-type stepless speed change device (1992-11-17),

9. 5115159 - Built-in generator for bicycle (1992-05-19),

10. 5056630 - Wheel rim for a bicycle (1991-10-15),

11. 5045037 - Friction stepless speed change device (1991-09-03),

12. 5030183 - Friction stepless speed change device (1991-07-09),

13. 5012900 - Brake for bicycle (1991-05-07),

14. 4969539 - Brake for bicycle (1990-11-13),

15. 4934205 - Stepless speed change device (1990-06-19),

Company Overview

Bridgestone Cycle Co., Ltd., based in Tokyo, specializes in the development and manufacturing of bicycles and bicycle-related products. The company is a subsidiary of Bridgestone Corporation, leveraging advanced materials and engineering to enhance performance and safety in cycling. Bridgestone Cycle is committed to innovation in design and technology, focusing on creating high-quality bicycles that cater to a diverse range of consumers, from casual riders to professional athletes, while promoting sustainable mobility solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

37 Patents

#966 in Tokyo

#2,061 in Japan

#18,312 in the World

Bridgestone Cycle Co., Ltd.

Forward Citations = 579

34 inventors:

Kikuzo Takamiya (19 out of 19 patents)

Hideyuki Ishibashi (8 out of 8 patents)

Kunitoshi Kozakae (8 out of 8 patents)

4. Yoshitaka Tamura (8 out of 8 patents)

5. Kiyofumi Hirai (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bridgestone Cycle Co., Ltd.. Retrieved from https://idiyas.com/company/bridgestone-cycle-company

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

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]

Loading…