Nagoya, Japan

Ryutaro Fukumoto

This inventor holds 6 USPTO granted patents. Top assignees: Mitsubishi Jukogyo Kabushiki Kaisha, Churyo Engineering Co., Ltd.. Active years: 1984-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryutaro Fukumoto. Retrieved from https://idiyas.com/inventor/ryutaro-fukumoto

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 = 4.0

ph-index = 5

Forward Citations = 138(Granted Patents)


Location History:

  • Nagoya City, JP (1984)
  • Aichi, JP (1992)
  • Nagoya, JP (1985 - 1993)

Company Filing History:


Years Active: 1984-1993

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6 patents (USPTO):Explore Patents

Title: Ryutaro Fukumoto: Innovator in Starter Apparatus Technology

Introduction

Ryutaro Fukumoto is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of engineering, particularly in the development of starter apparatuses for internal combustion engines. With a total of 6 patents to his name, Fukumoto's innovations have the potential to enhance the efficiency and functionality of engine starters.

Latest Patents

One of Fukumoto's latest patents is a spiral spring type starter apparatus for an internal combustion engine. This innovative apparatus features a power accumulator mechanism that includes a spiral spring, which is fixed at one end to a starter shaft and at the other end to a power accumulator box. The design incorporates a ratchet device on both the starter shaft side and the power accumulator box side, allowing for the maintenance of a power accumulated condition in the spiral spring. Additionally, it enables power to be input to the power accumulator box and output from the starter shaft. The apparatus also includes a centrifugal type ratchet mechanism positioned between the starter shaft and the crank shaft of the engine. A motor, powered by a generator through a control circuit after the engine starts, drives the system, while a power transmission device transmits output power from the motor to the power accumulator box. This design allows for a reduction in the size of the motor and battery, and simplifies the assembly of the starter.

Career Highlights

Fukumoto has worked with prominent companies such as Mitsubishi Jukogyo Kabushiki Kaisha and Churyo Engineering Co., Ltd. His experience in these organizations has contributed to his expertise in engineering and innovation.

Collaborations

Throughout his career, Fukumoto has collaborated with notable coworkers, including Yukio Yoshida and Ryosaku Akimoto. These partnerships have likely fostered a creative environment that has led to the development of his innovative technologies.

Conclusion

Ryutaro Fukumoto's contributions to the field of engineering, particularly in starter apparatus technology, demonstrate his commitment to innovation. His patents reflect a deep understanding of mechanical systems and a drive to improve existing technologies.

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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