Toyoake, Japan

Katsumasa Shimizu

This inventor holds 3 USPTO granted patents. Top assignee: Aisin Seiki Kabushiki Kaisha. Active years: 1987-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumasa Shimizu. Retrieved from https://idiyas.com/inventor/katsumasa-shimizu

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 = 3.6

ph-index = 3

Forward Citations = 38(Granted Patents)


Company Filing History:


Years Active: 1987-1988

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3 patents (USPTO):Explore Patents

Title: Innovations of Katsumasa Shimizu

Introduction

Katsumasa Shimizu is a notable inventor based in Toyoake, Japan. He has made significant contributions to the field of electric motors, holding a total of 3 patents. His work focuses on innovative designs that enhance the functionality and efficiency of motor systems.

Latest Patents

One of his latest patents is a flat motor having a stationary magnet. This design is particularly suitable for driving the fan of an internal combustion engine. The motor features a stationary cover member in the form of a disk, which is fixedly secured to a stationary support. A permanent magnet ring is attached to the cover member, and a rotor made of synthetic resin material is rotatably mounted on a shaft. This rotor includes an embedded electric coil and is supported by a ball bearing. Another significant patent is the electric motor operated throttle valve. This disk-shaped, coreless electric motor controls the tilt of a throttle valve. It includes a field magnet with N and S poles and a stator armature with coils positioned to develop torque when excited.

Career Highlights

Katsumasa Shimizu is associated with Aisin Seiki Kabushiki Kaisha, a company known for its advancements in automotive technology. His work has contributed to the development of more efficient motor systems, showcasing his expertise in the field.

Collaborations

He has collaborated with notable coworkers such as Hiroyuki Amano and Manabu Shiraki. Their combined efforts have led to innovative solutions in electric motor technology.

Conclusion

Katsumasa Shimizu's contributions to electric motor design reflect his innovative spirit and dedication to advancing technology. His patents demonstrate a commitment to improving efficiency and functionality in motor systems.

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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