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For the Inventor, By the Inventor

Kyoto, Japan

Tomofumi Mishima

This inventor holds 13 USPTO granted patents and 1 published patent application. Top assignee: Rohm Co., Ltd.. Active years: 2010-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomofumi Mishima. Retrieved from https://idiyas.com/inventor/tomofumi-mishima

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

Calculating rank
USPTO Granted Patents = 13 

% Patents Active = 84.6

Average Co-Inventor Count = 1.6

ph-index = 5

Forward Citations = 46(Granted Patents)


Company Filing History:

goldMedal13 out of 6,021 
 
Rohm Co., Ltd.
 patents

Years Active: 2010-2020

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13 patents (USPTO):Explore Patents
1. 10644629 - Fan motor driving circuit, driving method, and cooling device and electronic machine using the same (2020-05-05),
2. 10234914 - Motor driving circuit, cooling apparatus and electronic device using the same (2019-03-19),
3. 9954476 - Motor driving apparatus (2018-04-24),
4. 9800185 - Motor driving circuit, cooling device and electronic apparatus including the same (2017-10-24),
5. 9712089 - Fan motor driving means, driving method, and cooling device and electronic equipment using the same (2017-07-18),
6. 9490731 - Fan motor driving apparatus and method, cooling system including the same, and electronic equipment (2016-11-08),
7. 8384325 - Motor driving circuit and method for driving motor (2013-02-26),
8. 8274249 - Motor drive device with lock protection function (2012-09-25),
9. 8093846 - Motor drive device (2012-01-10),
10. 7915843 - Motor drive device, method, and cooling device using the same (2011-03-29),
11. 7885044 - Motor drive device with lock protection function (2011-02-08),
12. 7796867 - Motor drive device and cooling device using the same (2010-09-14),
13. 7773352 - Motor drive device with lock protection function (2010-08-10),

Title: The Innovative Contributions of Tomofumi Mishima

Introduction

Tomofumi Mishima is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of electronic devices, particularly in the area of fan motor technology. With a total of 13 patents to his name, Mishima continues to push the boundaries of innovation.

Latest Patents

Mishima's latest patents include a fan motor driving circuit, a driving method, and a cooling device and electronic machine utilizing the same. This invention focuses on a motor driving circuit that effectively suppresses strain on coil current and reduces noise. The control circuit switches the output phase of an H-bridge circuit based on a Hall signal. During a soft switching duration, the duty ratio of the output voltage of one leg of the H-bridge circuit is varied over time, while the duty ratio of another leg is adjusted in the opposite direction. This innovative approach enhances the performance of electric fan motors.

Career Highlights

Mishima is currently employed at Rohm Co., Ltd., a leading company in the semiconductor industry. His work at Rohm has allowed him to develop cutting-edge technologies that improve the efficiency and functionality of electronic devices. His expertise in motor driving circuits has positioned him as a key player in the field.

Collaborations

Mishima has collaborated with talented coworkers such as Yuki Gohara and Satoshi Miyajima. Together, they have worked on various projects that have contributed to advancements in electronic engineering.

Conclusion

Tomofumi Mishima's innovative work in fan motor technology and his numerous patents highlight his significant impact on the field of electronics. His contributions continue to shape the future of electronic devices, making him a noteworthy inventor in the industry.

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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