Tokyo, Japan

Masahiro Fujikura

This inventor holds 18 USPTO granted patents and 2 published patent applications and 10 EPO patents, primarily in Electrical Steel Technology. Top assignees: Nippon Steel Corporation, Nippon Steel Sumitomo Metal Corporation, Kajima Corporation. Active years: 1991-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Fujikura. Retrieved from https://idiyas.com/inventor/masahiro-fujikura

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 88.9

 

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 36(Granted Patents)


Location History:

  • Kawasaki, JP (1991 - 1995)
  • Futtsu, JP (2002 - 2008)
  • Kunitachi, JP (2011)
  • Tokyo, JP (2015 - 2019)

Company Filing History:


Years Active: 1991-2019

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Areas of Expertise:
Non-Oriented Electrical Steel
Manufacturing Method
Magnetic Shield Structure
Low-Noise Transformer
High-Strength Steel
Grain-Oriented Steel
Amorphous Magnetic Alloy
Rare-Earth Powders
Core Loss Property
Thin Alloy Strip
18 patents (USPTO):Explore Patents

Title: Masahiro Fujikura: Innovator in Electrical Steel Technology

Introduction

Masahiro Fujikura, based in Tokyo, Japan, is a notable inventor with a focus on innovative materials and processes. With a total of 18 patents to his name, Fujikura has made significant contributions to the field of electrical steel, which is crucial for various electrical applications.

Latest Patents

Fujikura's recent inventions include a revolutionary non-oriented electrical steel sheet designed to improve magnetic properties and manufacturing methods. His first patent details an electrical steel sheet containing specific mass percentages of carbon, silicon, manganese, phosphorus, and aluminum. This sheet boasts a non-magnetic precipitate of AlN with a particular density and magnetic flux density.

His second patent focuses on the manufacturing method of such a steel sheet, emphasizing the finishing processes involving annealing and the formation of an insulating film on the surface of the cold-rolled steel strip. The method includes careful temperature management to create an oxide layer conducive to high-performance electrical applications.

Career Highlights

Fujikura has had an illustrious career, having worked for leading companies in the materials and metallurgical industry. Notably, he has been associated with Nippon Steel Corporation and Nippon Steel & Sumitomo Metal Corporation, where he honed his expertise in steel manufacturing and processing technologies.

Collaborations

Throughout his career, Fujikura has collaborated with fellow innovators such as Takeshi Kubota and Hisashi Mogi. Their collective efforts have driven advancements in the field and have led to numerous patents that continue to influence the industry.

Conclusion

Masahiro Fujikura stands out as a prominent inventor in the realm of electrical steel technology. With his innovative patents and impactful career, he continues to shape the future of materials used in electrical applications. His contributions are a testament to the importance of innovation in driving progress within 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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