Sakai, Japan

Hiroshi Fujita

This inventor holds 56 USPTO granted patents and 4 EPO patents, primarily in Bicycle Components. Top assignees: Shimano Inc., Panasonic Intellectual Property Management Co., Ltd., Panasonic Intellectual Property Corporation of America. Active years: 2014-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Fujita. Retrieved from https://idiyas.com/inventor/hiroshi-fujita

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


% Patents Active = 94.6

 

Average Co-Inventor Count = 2.4

ph-index = 7

Forward Citations = 194(Granted Patents)

Forward Citations (Not Self Cited) = 135(Dec 10, 2025)


Location History:

  • Matsubara, JP (2017 - 2018)
  • Osaka, JP (2014 - 2022)
  • Sakai, JP (2017 - 2024)

Company Filing History:


Years Active: 2014-2026

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Areas of Expertise:
Bicycle Sprocket
Rear Sprocket Assembly
Bicycle Hub Assembly
Drive Train
Bracket Apparatus
Sprocket Support
Human-Powered Vehicle
Copper Alloy Wire
Flashlight
Force Distributing Apparatus
Electric Device
56 patents (USPTO):Explore Patents

Title: Hiroshi Fujita: A Pioneer in Patent Innovations

Introduction

Hiroshi Fujita, located in Sakai, Japan, is an accomplished inventor with an impressive portfolio of 48 patents to his name. His innovations primarily focus on advancements in mechanized components, particularly in the biking industry. With a wealth of experience, Fujita has made significant contributions through his inventive designs and mechanisms.

Latest Patents

Among his latest patents, one notable innovation is the Rear Sprocket, which features a unique design that includes a sprocket body, multiple sprocket teeth, and spline teeth. The key differentiator of this design is that the maximum spline distance exceeds the radial tooth-bottom distance, optimizing performance and efficiency. Another remarkable patent is the Rear Sprocket Assembly and Lock Device, which comprises two distinct lock members. This innovative device allows for secure assembly while enabling smooth axial movement of the smallest sprocket relative to the lock device, facilitating enhanced functionality in sprocket systems.

Career Highlights

Throughout his career, Hiroshi Fujita has held significant positions in reputable companies, including Shimano Inc. and Panasonic Intellectual Property Management Co., Ltd. His work has focused on bolstering mechanical designs that improve cycling experiences and mechanical reliability.

Collaborations

Fujita has collaborated with various talented professionals, including Kazuki Koshiyama and Atsuhiro Emura. These partnerships have further amplified his contributions to the field, allowing for a fusion of ideas and expertise that fosters innovation in mechanical design.

Conclusion

Hiroshi Fujita is a prominent figure in the realm of innovations and patents. With an extensive collection of patents showcasing his inventive prowess, he continues to pave the way for future developments in mechanical engineering, particularly in the cycling industry. His dedication to improving functionality and design serves as an inspiration to inventors and engineers alike.

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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