Kanagawa, Japan

Katsuhiko Iijima

This inventor holds 3 USPTO granted patents. Top assignees: Fuji Electric Co., Ltd., Mitsubishi Heavy Industries Limited. Active years: 1994-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhiko Iijima. Retrieved from https://idiyas.com/inventor/katsuhiko-iijima-tbbgki5c

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 = 2.0

ph-index = 3

Forward Citations = 65(Granted Patents)


Company Filing History:


Years Active: 1994-1998

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3 patents (USPTO):Explore Patents

Title: Katsuhiko Iijima: Innovator in Electric Vehicle Control Systems

Introduction

Katsuhiko Iijima is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electric vehicle technology, holding a total of 3 patents. His work focuses on innovative methods for controlling electric vehicles driven by internal combustion engines.

Latest Patents

Iijima's latest patents include a method of controlling electric vehicles that utilize internal combustion engines. This method involves maintaining a constant DC voltage in a specific speed range and adjusting the voltage in proportion to the vehicle speed in different operational ranges. The control system ensures that the AC output of the power converter varies in voltage and frequency according to the vehicle's speed, optimizing performance across various driving conditions.

Career Highlights

Throughout his career, Katsuhiko Iijima has worked with prominent companies such as Fuji Electric Co., Ltd. and Mitsubishi Heavy Industries Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in electric vehicle technology.

Collaborations

Iijima has collaborated with various professionals in the field, including his coworker Shigenori Kinoshita. Their joint efforts have contributed to advancements in electric vehicle control systems.

Conclusion

Katsuhiko Iijima's work in electric vehicle technology showcases his innovative spirit and dedication to improving vehicle performance. His patents reflect a deep understanding of the complexities involved in electric vehicle control 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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