Tokyo, Japan

Sadao Fujimori

This inventor holds 4 USPTO granted patents. Top assignees: Kabushiki Kaisha Meidensha, Tokyo Shobundo & Co., Ltd.. Active years: 1980-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadao Fujimori. Retrieved from https://idiyas.com/inventor/sadao-fujimori

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 = 1.4

ph-index = 3

Forward Citations = 17(Granted Patents)


Company Filing History:


Years Active: 1980-1992

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4 patents (USPTO):Explore Patents

Title: Sadao Fujimori: Innovator in Chassis Dynamometer Technology

Introduction

Sadao Fujimori is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of automotive testing technology, particularly through his innovative designs of chassis dynamometers. With a total of 4 patents to his name, Fujimori's work has advanced the efficiency and accuracy of vehicle performance testing.

Latest Patents

Fujimori's latest patents include the "Chassis Dynamometer" and the "Twin Roller Chassis Dynamometer." The chassis dynamometer patent describes a system that includes a load roller and a free roller, both driven by a tested object, such as an automotive vehicle. This design features a flywheel mounted on a second shaft, which rotates faster than the first shaft, thereby increasing the inertial load while reducing the weight of the flywheel. The twin roller chassis dynamometer patent introduces a configuration with two coaxially arranged load rollers and free rollers, where one of the free rollers incorporates an outer rotor dynamometer. This setup allows for a step-up gearing mechanism that drives the rotor faster than the load roller, enhancing testing capabilities.

Career Highlights

Throughout his career, Sadao Fujimori has worked with prominent companies such as Kabushiki Kaisha Meidensha and Tokyo Shobundo & Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced automotive testing equipment.

Collaborations

Fujimori has collaborated with notable colleagues, including Akira Yamamoto and Satoru Taneda. Their combined efforts have fostered innovation in the field of chassis dynamometer technology.

Conclusion

Sadao Fujimori's contributions to automotive testing technology through his innovative patents have significantly impacted the industry. His work continues to influence the development of more efficient and effective testing methods for vehicles.

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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