Eniwa, Japan

Hajime Ohnuma

This inventor holds 1 USPTO granted patent. Top assignee: Dynax Corporation. Active years: 1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Ohnuma. Retrieved from https://idiyas.com/inventor/hajime-ohnuma

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1996

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1 patent (USPTO):Explore Patents

Title: Hajime Ohnuma: Innovator in Friction Engaging Devices

Introduction

Hajime Ohnuma is a notable inventor based in Eniwa, Japan. He has made significant contributions to the field of mechanical engineering, particularly in the development of friction engaging devices. His innovative approach has led to the creation of a unique device that enhances performance in various applications.

Latest Patents

Hajime Ohnuma holds a patent for a "Wet Multidisc Friction Engaging Device." This device features alternately arranged, interleaved discs, each consisting of a core plate and a friction member on only one face of the core plate. The friction members are designed to engage with the core plates of adjacent discs. Some friction members possess a high coefficient of static friction, enabling high torque transmission, while others have a high coefficient of dynamic friction to minimize shock and noise during engagement. The design cleverly addresses heat resistance issues by utilizing thicker core plates for static friction members, allowing for effective heat diffusion.

Career Highlights

Hajime Ohnuma is currently employed at Dynax Corporation, where he continues to innovate and develop advanced mechanical solutions. His work has been instrumental in enhancing the efficiency and reliability of friction engaging devices.

Collaborations

Hajime collaborates with Kenichi Takezaki, a fellow engineer, to further advance their projects and share insights in their field.

Conclusion

Hajime Ohnuma's contributions to the field of friction engaging devices exemplify his innovative spirit and dedication to engineering excellence. His patent for the wet multidisc friction engaging device showcases his ability to solve complex problems in mechanical design.

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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