Osaka, Japan

Toshiro Yamada

This inventor holds 5 USPTO granted patents. Top assignee: Nisshin Steel Co., Ltd.. Active years: 1986-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiro Yamada. Retrieved from https://idiyas.com/inventor/toshiro-yamada-ciis7i8f

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 11(Granted Patents)


Location History:

  • Hiroshima, JP (1986)
  • Osaka, JP (1992 - 1994)
  • Kure, JP (1994 - 1997)

Company Filing History:


Years Active: 1986-1997

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5 patents (USPTO):Explore Patents

Title: Toshiro Yamada: Innovator in Steel Technology

Introduction

Toshiro Yamada is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced steel technologies. With a total of 5 patents to his name, Yamada's work has had a lasting impact on the industry.

Latest Patents

Yamada's latest patents include innovative solutions such as a lubricant for use in hot rolling of high chromium stainless steel. He has also developed a heat treatment process for manufacturing spring steel that excels in high-temperature relaxation resistance. This process involves a specific composition of steel that undergoes controlled heat treatment, enhancing its properties significantly. The improvements in high-temperature relaxation resistance cannot be estimated from ordinary mechanical properties, such as strength and hardness. Yamada's research indicates that increasing the silicon content enhances temper-softening resistance. Additionally, fine carbides (MO₂C) are precipitated through controlled heat treatment, which lowers the density of dislocation without reducing hardness in the tempered state. This advancement allows the spring steel to operate in high-temperature environments for extended periods without deterioration.

Career Highlights

Toshiro Yamada is currently associated with Nisshin Steel Co., Ltd., where he continues to innovate and contribute to the field of metallurgy. His work has been recognized for its practical applications and contributions to improving the performance of steel products.

Collaborations

Yamada has collaborated with notable colleagues, including Atsushi Aizawa and Yoshinori Matsumoto. Their combined expertise has furthered the development of advanced materials and technologies in the steel industry.

Conclusion

Toshiro Yamada's contributions to steel technology exemplify the importance of innovation in materials science. His patents and research continue to influence the industry, ensuring that high-performance steel products meet the demands of modern 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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