Kyoto, Japan

Naoyuki Usagawa

This inventor holds 3 USPTO granted patents and 3 published patent applications and 1 EPO patent. Top assignees: Rohm Co., Ltd., Arkray, Inc.. Active years: 2013-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoyuki Usagawa. Retrieved from https://idiyas.com/inventor/naoyuki-usagawa

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

USPTO Granted Patents = 3 

% Patents Active = 100.0


Average Co-Inventor Count = 2.6

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 2013-2025

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3 patents (USPTO):Explore Patents

Title: Innovations by Naoyuki Usagawa: Pioneering Motor Control and Photometry Mechanisms

Introduction

Naoyuki Usagawa, an eminent inventor based in Kyoto, Japan, has made significant contributions to the fields of motor control devices and analytical instruments. With a total of two patents to his name, his work embodies a blend of innovative technology and practical solutions.

Latest Patents

One of Naoyuki Usagawa's latest inventions is a motor control device that effectively manages energization control signals within a bridge driver. This advanced motor control device incorporates an energization controller that generates specific control signals, an analog-to-digital converter (ADC) for sampling feedback voltages, and a zero-crossing detector that determines the commutation timing and pulse-width modulation (PWM) duty. The design allows for optimal sampling timings in relation to the PWM on and off periods, ensuring efficient operation of the lower side switches in the bridge driver.

Another noteworthy invention is an analyzer featuring a photometry mechanism that analyzes reagent pads of analytical tools. This analyzer is equipped with a cleaning mechanism that enhances the performance and cleanliness of the photometry system. Notably, the cleaning tool designed for this analyzer ensures that light emitting surfaces remain unobstructed, facilitating accurate analysis.

Career Highlights

Naoyuki Usagawa has collaborated with prestigious companies throughout his career, notably at Arkray, Inc. and Rohm Co., Ltd. His experiences at these organizations have profoundly impacted his inventive endeavors, providing a platform for his innovative ideas to flourish.

Collaborations

Usagawa has worked alongside talented professionals in the industry, including colleagues Toshinori Fujiwara and Hideki Tanji. Their collaborations have fostered an environment of creativity and technological advancement, leading to the development of cutting-edge inventions.

Conclusion

With a focus on innovation in motor control and analytical measurements, Naoyuki Usagawa stands out as a distinguished inventor. His patents not only showcase his expertise but also contribute significantly to advancements in technology. As he continues to explore new frontiers in invention, the impact of his work will undoubtedly be felt within the industry and beyond.

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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