Tokyo, Japan

Hirofumi Akagi

This inventor holds 9 USPTO granted patents and 1 published patent application and 11 EPO patents. Top assignees: Tokyo Institute of Technology, Mazda Motor Corporation, Mitsubishi Electric Corporation. Active years: 2009-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Akagi. Retrieved from https://idiyas.com/inventor/hirofumi-akagi-81n1z7d6

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

Calculating rank
USPTO Granted Patents = 9 

% Patents Active = 55.6

 

Average Co-Inventor Count = 2.4

ph-index = 4

Forward Citations = 66(Granted Patents)


Location History:

  • Kawasaki, JP (2011)
  • Meguro-ku, JP (2012)
  • Tokyo, JP (2009 - 2019)

Company Filing History:


Years Active: 2009-2019

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9 patents (USPTO):Explore Patents

Title: Hirofumi Akagi: Innovator in Power Conversion Technologies

Introduction

Hirofumi Akagi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of power conversion technologies, holding a total of 9 patents. His work focuses on innovative circuit designs that enhance the efficiency and functionality of power systems.

Latest Patents

One of Akagi's latest patents is a bidirectional chopper circuit. This circuit features a main power converter equipped with a first switch and a second switch, designed to operate in a complementary manner. The switches are connected in series, allowing for efficient power conversion. Additionally, he has developed a power converter that utilizes three clusters of unit cells connected in a delta-connection configuration. This design enables seamless power conversion between DC power supplies and three-phase AC power supplies, showcasing his expertise in advanced electrical engineering.

Career Highlights

Throughout his career, Hirofumi Akagi has worked with esteemed organizations such as the Tokyo Institute of Technology and Mazda Motor Corporation. His experience in these institutions has allowed him to refine his skills and contribute to groundbreaking innovations in power electronics.

Collaborations

Akagi has collaborated with notable colleagues, including Makoto Hagiwara and Kei Yonemori. These partnerships have fostered a creative environment that has led to the development of cutting-edge technologies in the field.

Conclusion

Hirofumi Akagi's contributions to power conversion technologies have established him as a leading inventor in his field. His innovative patents and collaborations reflect his commitment to advancing electrical 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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