Hitachi, Japan

Toshiyuki Koterazaka

This inventor holds 1 USPTO granted patent. Top assignees: Hitachi Automotive Engineering Co., Ltd., Hitachi, Ltd.. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Koterazaka. Retrieved from https://idiyas.com/inventor/toshiyuki-koterazaka

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 = 11.0

ph-index = 1

Forward Citations = 10(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: Toshiyuki Koterazaka: Innovator in Electric Power Steering Technology

Introduction

Toshiyuki Koterazaka is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of electric power steering systems. His innovative approach has led to advancements that enhance vehicle handling and safety.

Latest Patents

Koterazaka holds a patent for an "Electric power steering apparatus for vehicle." This invention includes a steering shaft, an electric motor that generates auxiliary steering force based on the electric current supplied, a steering torque sensor, a vehicle weight sensor, and a control device. The control device adjusts the electric current supplied to the motor according to the values detected by both the steering torque and vehicle weight sensors. This technology aims to improve the responsiveness and efficiency of vehicle steering systems.

Career Highlights

Throughout his career, Koterazaka has worked with prominent companies such as Hitachi, Ltd. and Hitachi Automotive Engineering Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking projects in automotive engineering.

Collaborations

Koterazaka has collaborated with esteemed colleagues, including Hisatugu Ishikura and Kazuo Tahara. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Toshiyuki Koterazaka's work in electric power steering technology exemplifies the impact of innovative thinking in the automotive industry. His contributions continue to influence vehicle design and functionality, making driving safer and more efficient.

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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