Sakai, Japan

Takuji Masui

This inventor holds 24 USPTO granted patents and 2 EPO patents, primarily in Bicycle Technology. Top assignees: Shimano Inc., Other. Active years: 1998-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuji Masui. Retrieved from https://idiyas.com/inventor/takuji-masui

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


% Patents Active = 83.3


Average Co-Inventor Count = 1.5

ph-index = 12

Forward Citations = 312(Granted Patents)


Location History:

  • Sakai-shi, Osaka, JP (2002)
  • Osaka, JP (2002 - 2009)
  • Sakai, JP (1998 - 2010)

Company Filing History:


Years Active: 1998-2010

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Areas of Expertise:
Bicycle Control Panel
Foldable Bicycle Computer
Bicycle Lighting Apparatus
Rear Derailleur
Bicycle Suspension Fork
Handlebar Adapter
Combined Display Unit
Shifting Apparatus
Bicycle Hub Shell
Function Key Guard
Rotatable Dial
Front Chain Wheel
24 patents (USPTO):Explore Patents

Takuji Masui: Innovator in Bicycle Control Technology

Introduction

Takuji Masui is a prominent inventor based in Sakai, Japan, recognized for his significant contributions to the field of bicycle control systems. With an impressive portfolio of 24 patents, Masui has consistently demonstrated ingenuity and creativity in developing solutions that enhance the rider's experience.

Latest Patents

One of Masui's latest innovations is a "Switch Guide for a Bicycle Control Panel". This patent describes a switch guide positioned between a pair of switches on a computerized bicycle control panel. The design is intended to assist bicycle riders in effectively navigating their thumbs to the appropriate switch on the handlebar. This switch guide features a protrusion that can be easily detected by the rider's thumb, ensuring a seamless and intuitive interaction with the bicycle's control system. Notably, the height of the switch guide is deliberately crafted to be greater than that of the switches, improving accessibility. Additionally, the strategic placement of the guide allows easy access to both switches by moving the thumb to either side.

Career Highlights

Throughout his career, Takuji Masui has worked with notable companies, including Shimano Inc. His work has been pivotal in advancing bicycle technology by developing innovative systems that prioritize user-friendliness and ergonomic design.

Collaborations

Masui has collaborated with influential figures in the design and technology sectors, including Hartmut Esslinger and Nico Michler. These partnerships have further enriched his approach to invention and have played a significant role in his successful patent filings.

Conclusion

Takuji Masui's innovative spirit and extensive patent portfolio reflect his dedication to improving bicycling technology. His latest inventions not only showcase his technical prowess but also emphasize the importance of user experience in product design. As technology continues to evolve, Masui’s contributions will remain a vital part of the cycling industry’s advancement.

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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