Tokyo, Japan

Kiyoyuki Masusawa

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Tdk Corporation. Active years: 2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyoyuki Masusawa. Retrieved from https://idiyas.com/inventor/kiyoyuki-masusawa

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

USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2020

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2 patents (USPTO):Explore Patents

Title: Kiyoyuki Masusawa: A Pioneer in Permanent Magnet Innovations

Introduction:

Kiyoyuki Masusawa is a notable inventor based in Tokyo, Japan, recognized for his significant contributions to the field of permanent magnets. With two active patents, Masusawa is at the forefront of innovation, specifically within the realm of R-T-B based permanent magnets.

Latest Patents:

Masusawa's latest patents focus on the development of R-T-B based permanent magnets, which are designed to exhibit high residual magnetic flux density (Br) and coercive force (HcJ). One of his key inventions involves a composition where R represents a rare earth element and T indicates elements excluding rare earths, with B representing boron. Specifically, his formulation includes terbium (Tb) among the rare earth elements and iron (Fe), copper (Cu), cobalt (Co), and gallium (Ga) among the other components. The innovative design enables the Tb concentration to decrease from the exterior towards the interior of the magnet.

Another patent from Masusawa addresses a similar goal, aiming to enhance the performance of R-T-B based permanent magnets even after the diffusion of heavy rare earth elements along grain boundaries. The distinct composition details, including parameters for R, T, and B, further solidify the practicality and efficacy of his magnetic inventions.

Career Highlights:

Kiyoyuki Masusawa is associated with TDK Corporation, a leading company in electronic components and systems. His work at TDK emphasizes on applying advanced materials and magnetic technologies to create superior products that meet contemporary industrial standards.

Collaborations:

Throughout his career, Masusawa has collaborated with fellow inventor Makoto Nakane. Their joint efforts contribute toward the advancement of permanent magnet technologies, leading to breakthroughs that enhance the functionality and efficiency of modern electronic devices.

Conclusion:

In conclusion, Kiyoyuki Masusawa stands out as an influential figure in the realm of permanent magnets. His innovative patents reflect a commitment to improving material performance and advancing technology. With a collaborative spirit and a deep understanding of magnetic materials, Masusawa continues to inspire future generations of inventors and engineers.

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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