Kanagawa, Japan

Fumio Tonomura

This inventor holds 6 USPTO granted patents and 5 published patent applications. Top assignee: Renesas Electronics Corporation. Active years: 2011-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumio Tonomura. Retrieved from https://idiyas.com/inventor/fumio-tonomura

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

USPTO Granted Patents = 6 

% Patents Active = 66.7

Average Co-Inventor Count = 1.5

ph-index = 3

Forward Citations = 15(Granted Patents)


Location History:

  • Shiga, JP (2011 - 2013)
  • Kanagawa, JP (2012 - 2016)
  • Tokyo, JP (2017)

Company Filing History:


Years Active: 2011-2017

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6 patents (USPTO):Explore Patents

Title: Fumio Tonomura: Innovator in Cell Protection Systems

Introduction

Fumio Tonomura is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronics, particularly in the development of cell protection systems. With a total of six patents to his name, Tonomura's work has had a considerable impact on the industry.

Latest Patents

One of Tonomura's latest patents is a sophisticated cell protection system. This system includes various components such as a charge control MOSFET, a charge current detection MOSFET, a discharge control MOSFET, and a discharge current detection MOSFET. Additionally, it features charge and discharge current detection resistances along with a control circuit. The design allows for efficient management of charge and discharge processes, ensuring the safety and longevity of the cells involved.

Career Highlights

Fumio Tonomura has spent a significant part of his career at Renesas Electronics Corporation. His innovative work in cell protection technology has positioned him as a key figure in the electronics sector. His patents reflect a deep understanding of electronic components and their interactions.

Collaborations

Throughout his career, Tonomura has collaborated with talented individuals such as Hideo Ishii and Tsuyoshi Ota. These collaborations have likely contributed to the advancement of his projects and the successful development of his patents.

Conclusion

Fumio Tonomura is a distinguished inventor whose work in cell protection systems has made a lasting impact on the electronics industry. His innovative patents and collaborations highlight his expertise and commitment to advancing 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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