Kitakyushu, Japan

Haruo Koyama

This inventor holds 1 USPTO granted patent. Top assignee: Nippon Steel Corporation. Active years: 1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Haruo Koyama. Retrieved from https://idiyas.com/inventor/haruo-koyama-vy1cjk4s

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 = 9.0

ph-index = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1990

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1 patent (USPTO):Explore Patents

Title: Haruo Koyama: Innovator in Rail Heat Treatment

Introduction

Haruo Koyama is a notable inventor based in Kitakyushu, Japan. He has made significant contributions to the field of rail heat treatment, showcasing his expertise through innovative methods and technologies. His work is particularly recognized for enhancing the strength and durability of steel rails.

Latest Patents

Koyama holds a patent for a "Method of and apparatus for heat-treating rails." This invention focuses on a method that allows for obtaining various strength levels in steel rails, ranging from medium to high values. The process involves maintaining the steel rail at a high temperature, utilizing a nozzle to direct a gaseous cooling medium towards the rail's head, and adjusting the distance between the nozzle and the rail based on desired hardness levels. This innovative approach ensures that the rail achieves the required hardness efficiently.

Career Highlights

Haruo Koyama is associated with Nippon Steel Corporation, a leading company in the steel industry. His work at Nippon Steel has allowed him to apply his innovative ideas in a practical setting, contributing to advancements in rail technology. Koyama's patent reflects his commitment to improving the quality and performance of steel products.

Collaborations

Throughout his career, Koyama has collaborated with esteemed colleagues such as Keiji Fukuda and Takefumi Suzuki. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas within the field of materials engineering.

Conclusion

Haruo Koyama's contributions to rail heat treatment exemplify the impact of innovation in the steel industry. His patented methods not only enhance the strength of steel rails but also demonstrate the importance of research and development in advancing technology. Koyama's work continues to influence the field, paving the way for future innovations.

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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