Fuji, Japan

Hirofumi Maruyama

This inventor holds 1 USPTO granted patent. Top assignees: Jatco Corporation, Unipres Corporation. Active years: 2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Maruyama. Retrieved from https://idiyas.com/inventor/hirofumi-maruyama-keutqhjc

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 = 3.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 2007

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1 patent (USPTO):Explore Patents

Title: Hirofumi Maruyama: Innovator in Automatic Transmission Technology

Introduction

Hirofumi Maruyama is a notable inventor based in Fuji, Japan. He has made significant contributions to the field of automatic transmission technology. His innovative designs have led to advancements that enhance the efficiency and functionality of automotive systems.

Latest Patents

Maruyama holds a patent for an automatic transmission, specifically focusing on a forward/reverse change-over mechanism. This mechanism includes a forward clutch housed within a drum that rotates with an input shaft. The forward clutch engages through a piston driven by oil pressure from an oil chamber. The design incorporates projecting bearings formed by press-forming at equal angular intervals, allowing for a compact mechanism with fewer parts and machining steps.

Career Highlights

Throughout his career, Maruyama has worked with prominent companies such as Jatco Corporation and Unipres Corporation. His experience in these organizations has contributed to his expertise in automatic transmission systems.

Collaborations

Some of his notable coworkers include Takeshi Kaneda and Mitsumasa Yabutani. Their collaboration has likely fostered an environment of innovation and creativity in their projects.

Conclusion

Hirofumi Maruyama's contributions to automatic transmission technology exemplify his innovative spirit and dedication to engineering excellence. His patent and career achievements reflect his significant impact on the automotive industry.

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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