Shinnanyo, Japan

Naoto Hiramatsu

This inventor holds 18 USPTO granted patents, plus 1 CIPO patent, primarily in Stainless Steel Alloys. Top assignee: Nisshin Steel Co., Ltd.. Active years: 1991-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoto Hiramatsu. Retrieved from https://idiyas.com/inventor/naoto-hiramatsu

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


% Patents Active = 77.8


Average Co-Inventor Count = 3.4

ph-index = 7

Forward Citations = 163(Granted Patents)


Location History:

  • Yamaguchi, JP (1994)
  • Tokuyama, JP (1991 - 2004)
  • Shunan, JP (2006)
  • Shin-Nanyo, JP (2001 - 2007)

Company Filing History:


Years Active: 1991-2007

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Areas of Expertise:
Austenitic Stainless Steel
Ferritic Stainless Steel
Martensitic Stainless Steel
Corrosion Resistance
High-Strength Alloys
Manufacturing Methods
Fine Blankability
Workability
Cold-Rolled Steel
Oxidation Resistance
Fuel Tank Design
Mechanical Properties
18 patents (USPTO):Explore Patents

Title: Innovations in Stainless Steel: The Contributions of Naoto Hiramatsu

Introduction: Naoto Hiramatsu, an accomplished inventor based in Shinnanyo, Japan, has made significant strides in the field of stainless steel manufacturing. With a total of 18 patents to his name, Hiramatsu's work focuses on enhancing the properties and machinability of stainless steel, contributing to advancements in various industries.

Latest Patents: Hiramatsu's recent inventions include a method for manufacturing austenitic stainless steel that demonstrates reduced susceptibility to cracking during forming. This innovative steel contains approximately 0.1-1.0 mass % of silicon and notably less than 0.003 mass % of aluminum. A key feature of this invention is the transformation of nonmetallic inclusions into manganese oxide—silicon oxide—aluminum oxide structures, which enhances the steel's formability. Additionally, he has developed ferritic and martensitic stainless steels featuring Cu-enriched particles that improve machinability without compromising other critical properties such as corrosion resistance or workability. These advancements are achieved through precise control over the steel's composition and processing conditions.

Career Highlights: Hiramatsu is currently affiliated with Nisshin Steel Co., Ltd., where he continues to push the boundaries of steel technology. His career is marked by a dedication to developing innovative materials that not only meet market demands but also adhere to environmental considerations.

Collaborations: Throughout his career, Hiramatsu has collaborated with esteemed colleagues, including Satoshi Suzuki and Yoshihiro Uematsu. These partnerships have fostered a collaborative environment that has been essential in driving forward the research and development of advanced stainless steels.

Conclusion: Naoto Hiramatsu stands out as a pioneering inventor in the steel industry. His contributions, marked by a series of innovative patents, underscore his commitment to enhancing the performance and sustainability of stainless steel materials. Through his work, Hiramatsu not only exemplifies the spirit of innovation but also plays a crucial role in shaping the future of materials science.

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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