Nishikamo-gun, Japan

Tatsuhiro Ishikawa

This inventor holds 1 USPTO granted patent. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuhiro Ishikawa. Retrieved from https://idiyas.com/inventor/tatsuhiro-ishikawa

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 9(Granted Patents)


Company Filing History:


Years Active: 2006

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1 patent (USPTO):Explore Patents

Title: Tatsuhiro Ishikawa: Innovator in Drive Unit Technology

Introduction

Tatsuhiro Ishikawa is a notable inventor based in Nishikamo-gun, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of drive units for vehicles. His innovative approach has led to the creation of a unique drive unit that enhances vehicle performance and efficiency.

Latest Patents

Ishikawa holds a patent for a drive unit and vehicle equipped therewith. This drive unit comprises a motor that can input and output motive power to and from a drive shaft. It includes a drive circuit that performs drive control of the motor, a fuel cell connected to the drive circuit without the intervention of a voltage converter, and a charge/discharge portion that is connected to the fuel cell in parallel. The design features at least one capacitor whose voltage in a fully charged state is higher than the inter-open-terminal voltage of the fuel cell. Additionally, a diode is installed to ensure electric power can only flow from the fuel cell to the charge/discharge portion. The drive control portion manages the drive circuit based on the required motive power to be transmitted to the drive shaft.

Career Highlights

Ishikawa is currently employed at Toyota Motor Corporation, where he continues to innovate and develop advanced automotive technologies. His work has been instrumental in enhancing the efficiency and performance of vehicles, contributing to the company's reputation as a leader in the automotive industry.

Collaborations

Ishikawa has collaborated with notable colleagues such as Hiroshi Yoshida and Hitoshi Sato. Their combined expertise has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Tatsuhiro Ishikawa is a prominent figure in the field of automotive innovation, with a focus on drive unit technology. His contributions have not only advanced vehicle performance but have also positioned him as a key inventor in the industry. His work at Toyota Motor Corporation and his collaborations with esteemed colleagues further highlight his impact on automotive technology.

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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