Himeji, Japan

Masafumi Ohkuma

This inventor holds 1 USPTO granted patent. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masafumi Ohkuma. Retrieved from https://idiyas.com/inventor/masafumi-ohkuma

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 = 3.0

ph-index = 1

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1992

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1 patent (USPTO):Explore Patents

Title: Masafumi Ohkuma: Innovator in DC Motor Technology

Introduction

Masafumi Ohkuma is a notable inventor based in Himeji, Japan. He has made significant contributions to the field of motor technology, particularly with his innovative designs that enhance the functionality of DC motors. His work is characterized by a focus on precision and efficiency, which has implications for various applications in engineering and technology.

Latest Patents

Ohkuma holds a patent for a "DC motor unit with a rotational speed detector." This invention features a DC motor that includes an output end and an idle end, along with a rotational speed detector that is water-tightly attached to the motor's output end. The design incorporates a motor frame, a mounting bracket, and a rotary shaft that is supported by the motor frame. The rotational speed detector consists of a rotary portion mounted on the output end of the rotary shaft and a stationary portion attached to the mounting bracket. This innovative design utilizes a permanent magnet plate to generate a magnetic flux, enhancing the motor's operational capabilities.

Career Highlights

Masafumi Ohkuma is associated with Mitsubishi Electric Corporation, a leading company in the field of electrical and electronic equipment. His work at Mitsubishi has allowed him to develop and refine his inventions, contributing to the company's reputation for innovation and quality in motor technology.

Collaborations

Ohkuma has collaborated with notable colleagues such as Toshihiko Nishimura and Teruaki Matsunaga. These collaborations have fostered a creative environment that encourages the exchange of ideas and advancements in technology.

Conclusion

Masafumi Ohkuma's contributions to DC motor technology exemplify the spirit of innovation that drives progress in engineering. His patented designs not only enhance motor functionality but also pave the way for future advancements in the field.

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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