Muroran, Japan

Ryoji Ishigaki

This inventor holds 4 USPTO granted patents and 3 EPO patents. Top assignee: The Japan Steel Works, Ltd.. Active years: 2012-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoji Ishigaki. Retrieved from https://idiyas.com/inventor/ryoji-ishigaki

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


 

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 2012-2019

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4 patents (USPTO):Explore Patents

Title: Ryoji Ishigaki: Innovator in High-Strength Low-Alloy Steel

Introduction

Ryoji Ishigaki is a notable inventor based in Muroran, Japan. He has made significant contributions to the field of materials science, particularly in the development of high-strength low-alloy steels. With a total of 4 patents to his name, Ishigaki's work focuses on enhancing the performance of steel in challenging environments.

Latest Patents

One of Ishigaki's latest patents is for a high-strength low-alloy steel that exhibits excellent resistance to embrittlement in high-pressure hydrogen environments. The invention aims to provide a cost-effective solution for producing low-alloy steel with high strength and outstanding resistance characteristics. The steel composition includes specific percentages of carbon, silicon, manganese, nickel, chromium, copper, molybdenum, vanadium, boron, and nitrogen, along with optional elements like niobium and titanium. This innovative approach addresses the challenges faced in high-pressure hydrogen applications.

Career Highlights

Ishigaki is currently employed at The Japan Steel Works, Ltd., where he continues to push the boundaries of steel technology. His expertise in metallurgy and material properties has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Ishigaki has collaborated with esteemed colleagues such as Yoru Wada and Yasuhiko Tanaka. These partnerships have fostered a collaborative environment that enhances innovation and research in steel production.

Conclusion

Ryoji Ishigaki's contributions to the field of high-strength low-alloy steel are invaluable. His innovative patents and collaborative efforts continue to shape 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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