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For the Inventor, By the Inventor

Tokyo, Japan

Kiyoyuki Masuzawa

This inventor holds 9 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignee: Tdk Corporation. Active years: 1999-2023.

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

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

USPTO Granted Patents = 9 

% Patents Active = 88.9

 

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 67(Granted Patents)


Location History:

  • Shizuoka, JP (2001)
  • Chiba, JP (1999 - 2002)
  • Haibara-gun, JP (2005)
  • Tokyo, JP (2011 - 2023)

Company Filing History:

goldMedal9 out of 8,267 
 
Tdk Corporation
 patents

Years Active: 1999-2023

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9 patents (USPTO):Explore Patents
1. 11710587 - R-T-B based permanent magnet (2023-07-25),
2. 11232889 - R-T-B based permanent magnet (2022-01-25),
3. 8066498 - Magnetic field molding device, method for producing ferrite magnet, and die (2011-11-29),
4. 6908568 - Preparation of oxide magnetic material and oxide magnetic material (2005-06-21),
5. 6402980 - Oxide magnetic material, ferrite particles, bonded magnet, sintered magnet, process for producing the same, and magnetic recording medium (2002-06-11),
6. 6258290 - Magnet powder, sintered magnet, process for producing them, bonded magnet, motor and magnetic recording medium (2001-07-10),
7. 6248253 - Hexagonal ferrite magnets (2001-06-19),
8. 6086781 - Magnet powder, sintered magnet, process for producing them, bonded (2000-07-11),
9. 5951937 - Preparation of oxide magnetic material (1999-09-14),

Title: Kiyoyuki Masuzawa: Innovator in Permanent Magnet Technology

Introduction

Kiyoyuki Masuzawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of permanent magnet technology, holding a total of 9 patents. His work focuses on the development of R-T-B based permanent magnets, which are essential in various applications, including electronics and renewable energy.

Latest Patents

Masuzawa's latest patents include innovative designs for R-T-B based permanent magnets. One of his patents describes a magnet where R is a rare earth element, T is iron (Fe) and cobalt (Co), and B is boron. This design includes a total content of R ranging from 28.0 mass % to 30.2 mass %, with specific concentrations of dysprosium (Dy), copper (Cu), cobalt (Co), and boron (B). Another patent further refines this concept by incorporating terbium (Tb) alongside Dy, with a concentration distribution of Tb that decreases from the outer side towards the inner side of the magnet.

Career Highlights

Kiyoyuki Masuzawa has built a successful career at TDK Corporation, where he continues to innovate in the field of magnet technology. His expertise and dedication have led to advancements that enhance the performance and efficiency of permanent magnets.

Collaborations

Throughout his career, Masuzawa has collaborated with notable colleagues, including Hitoshi Taguchi and Yoshihiko Minachi. These partnerships have contributed to the development of cutting-edge technologies in the field.

Conclusion

Kiyoyuki Masuzawa is a key figure in the advancement of permanent magnet technology, with a strong portfolio of patents that reflect his innovative spirit. His work continues to influence the industry and pave the way for future developments in magnet applications.

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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