Sakai, Japan

Seiji Fukui

This inventor holds 8 USPTO granted patents. Top assignee: Shimano Industrial Co., Ltd.. Active years: 1979-1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Fukui. Retrieved from https://idiyas.com/inventor/seiji-fukui-cwahvfcc

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 6

Forward Citations = 62(Granted Patents)


Location History:

  • Sakei, JP (1979)
  • Sakai, JP (1979 - 1982)

Company Filing History:


Years Active: 1979-1982

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8 patents (USPTO):Explore Patents

Title: Seiji Fukui: Innovations in Bicycle Gear-Transmission

Introduction:

Seiji Fukui, a prolific inventor hailing from Sakai, Japan, has made significant contributions to the field of bicycle technology with a total of 8 patents under his name. His groundbreaking inventions have revolutionized gear-transmission mechanisms, particularly in the realm of bicycle coaster brake hubs and two-stage transmission hubs.

Latest Patents:

1. Coaster brake hub with a gear-transmission: Fukui's patent showcases a bicycle coaster brake hub equipped with a unique gear-transmission system. The change-over mechanism implemented in this invention ensures uniform braking effectiveness across all driving speed stages, offering enhanced safety and control for cyclists.

2. Two-stage transmission hub for a bicycle: Another notable patent by Fukui introduces a two-stage transmission hub designed to optimize the speed-changing capabilities of bicycles. By incorporating transmitting pawls, sun gears, and planetary pinions, this innovation enhances the overall performance and efficiency of bicycle transmissions.

Career Highlights:

Seiji Fukui's inventive prowess is most prominently displayed during his tenure at Shimano Industrial Co., Ltd. where he has spearheaded numerous projects aimed at pushing the boundaries of bicycle technology. His relentless pursuit of innovation has led to the development of cutting-edge gear-transmission systems that have garnered acclaim within the cycling community.

Collaborations:

Throughout his career, Fukui has collaborated with esteemed colleagues such as Takashi Segawa and Mitsugu Hanada. Together, they have synergized their expertise to bring forth novel solutions and advancements in the field of bicycle engineering. Their collaborative efforts have not only solidified Fukui's reputation as a trailblazer in the industry but have also paved the way for future innovations.

Conclusion:

Seiji Fukui's inventive spirit and dedication to revolutionizing bicycle gear-transmission mechanisms have undoubtedly left an indelible mark on the world of cycling. His patents stand as a testament to his ingenuity and unwavering commitment to driving progress in the field of bicycle technology. As he continues to explore new frontiers in innovation, it is certain that Fukui's contributions will continue to shape and redefine the future of cycling worldwide.

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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