Hiroshima, Japan

Yoichi Hiraoka

This inventor holds 1 USPTO granted patent. Top assignee: Mazda Motor Corporation. Active years: 2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoichi Hiraoka. Retrieved from https://idiyas.com/inventor/yoichi-hiraoka

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 = 4.0

ph-index = 1

Forward Citations = 11(Granted Patents)


Company Filing History:


Years Active: 2000

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1 patent (USPTO):Explore Patents

Title: The Ingenious Mind of Yoichi Hiraoka: Innovator in Four-Wheel Drive Technology

Introduction: Yoichi Hiraoka, an inventive mind hailing from Hiroshima, Japan, has made his mark in the automotive industry with a focus on innovations in four-wheel drive technology. As an engineer at Mazda Motor Corporation, he has demonstrated his aptitude for creating advanced mechanistic solutions that enhance vehicle performance and reliability.

Latest Patents: Hiraoka holds a notable patent for a transfer case designed specifically for four-wheel drive vehicles. This innovative transfer case features a front wheel drive axle assembly and a second wheel drive axle assembly, both arranged parallel to the engine output shaft. The mechanism is connected through helical ring gears that are integrally formed and bolted to the differential housing, providing a robust and efficient design that optimizes the vehicle’s drivetrain functionality.

Career Highlights: Throughout his career at Mazda Motor Corporation, Hiraoka has contributed significantly to the advancements in automotive engineering. His focus on developing cutting-edge technologies has helped establish new benchmarks for performance in four-wheel drive systems, showcasing his talent and dedication to the field.

Collaborations: In his career, Hiraoka has had the opportunity to work alongside esteemed colleagues, such as Masaru Shiraishi and Hiroaki Hayashi. These collaborations have not only fostered a spirit of innovation but have also led to the development of numerous influential automotive technologies.

Conclusion: Yoichi Hiraoka is a testament to the innovative spirit found within the automotive industry. His contributions, particularly in the area of four-wheel drive technology, exemplify how inventive minds can create lasting impacts. As he continues his work at Mazda Motor Corporation, Hiraoka's legacy as an inventor will undoubtedly inspire future generations in the realm of automotive engineering.

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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