Kitakyushu, Japan

Shigekatsu Nagatomo

This inventor holds 10 USPTO granted patents and 2 published patent applications and 1 EPO patent. Top assignee: Kabushiki Kaisha Yaskawa Denki. Active years: 2002-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigekatsu Nagatomo. Retrieved from https://idiyas.com/inventor/shigekatsu-nagatomo

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

USPTO Granted Patents = 10 

% Patents Active = 80.0

 

Average Co-Inventor Count = 3.5

ph-index = 5

Forward Citations = 183(Granted Patents)


Location History:

  • Fukuoka, JP (2002 - 2010)
  • Kitakyushu, JP (2008 - 2022)

Company Filing History:


Years Active: 2002-2022

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10 patents (USPTO):Explore Patents

Title: Shigekatsu Nagatomo: Innovator in Inverter Technology

Introduction

Shigekatsu Nagatomo is a prominent inventor based in Kitakyushu, Japan. He has made significant contributions to the field of electrical engineering, particularly in inverter technology. With a total of 10 patents to his name, Nagatomo has established himself as a key figure in the industry.

Latest Patents

Nagatomo's latest innovations include an inverter apparatus and a matrix converter. The inverter apparatus is designed to convert electric power and features a main circuit substrate, an EMC filter substrate, a control substrate, and a panel. This apparatus effectively reduces electromagnetic noise while controlling the output of electric power. The matrix converter, on the other hand, consists of multiple bidirectional switches that facilitate the connection between input phases of an AC power supply and output phases of a load. This design enhances the efficiency and reliability of power conversion.

Career Highlights

Nagatomo is currently employed at Yaskawa Electric Corporation, where he continues to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of inverter systems, making them more efficient and effective for various applications.

Collaborations

Throughout his career, Nagatomo has collaborated with notable colleagues, including Takayuki Morihara and Kenji Isomoto. These partnerships have fostered innovation and have contributed to the successful development of his patented technologies.

Conclusion

Shigekatsu Nagatomo's contributions to inverter technology have made a lasting impact on the field of electrical engineering. His innovative designs and collaborative efforts continue to shape the future of power conversion systems.

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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