Hitachinaka, Japan

Ryoichi Oishi

This inventor holds 1 USPTO granted patent and 2 EPO patents. Top assignee: Hitachi, Ltd.. Active years: 2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Oishi. Retrieved from https://idiyas.com/inventor/ryoichi-oishi

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 = 6.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2015

Loading Chart...
Loading Chart...
1 patent (USPTO):Explore Patents

Title: Ryoichi Oishi: Innovator in Power Conversion Technology

Introduction

Ryoichi Oishi is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of power conversion technology, particularly in the context of rolling stock applications. His innovative work has led to the development of a patented technology that enhances the efficiency and reliability of power converters.

Latest Patents

Ryoichi Oishi holds a patent for a power converter, specifically designed for rolling stock. This power converter includes a first electric power conversion unit that features an inverter for converting a first DC electric power to AC electric power. Additionally, it incorporates an AC circuit connected to the first electric power conversion means. This invention is crucial for improving the performance of electric trains and other rolling stock.

Career Highlights

Oishi is associated with Hitachi, Ltd., a leading company in the technology and engineering sector. His work at Hitachi has allowed him to focus on advancing power conversion technologies, contributing to the company's reputation for innovation and excellence in the industry.

Collaborations

Throughout his career, Ryoichi Oishi has collaborated with esteemed colleagues such as Tetsu Sugiura and Masahiro Nagasu. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies in the field of electrical engineering.

Conclusion

Ryoichi Oishi's contributions to power conversion technology exemplify the impact of innovative thinking in engineering. His patent for a power converter demonstrates his commitment to enhancing the efficiency of rolling stock applications. Oishi's work continues to influence the industry and inspire future innovations.

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]
Loading…