Chiba, Japan

Hajime Kumura

This inventor holds 1 USPTO granted patent. Top assignee: Kawasaki Steel Corporation. Active years: 1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Kumura. Retrieved from https://idiyas.com/inventor/hajime-kumura

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 1991

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1 patent (USPTO):Explore Patents

Title: Hajime Kumura - Innovator in Steel Plating Technology

Introduction

Hajime Kumura, a dedicated inventor based in Chiba, Japan, has contributed significantly to the field of metallurgy through his innovative approach to steel plating technology. His work focuses on developing methods that enhance the durability and performance of steel sheets.

Latest Patents

Kumura holds a notable patent for a "Method of producing a steel sheet plated with Zn-Mg alloy superior both." This inventive method involves electroplating a steel sheet in a specialized bath maintained at temperatures between 350°C to 500°C. The bath contains chlorides of zinc, magnesium, and possibly additional chlorides of sodium, potassium, or lithium. The resulting Zn-Mg alloy plated steel sheet exhibits superior properties in terms of plating adhesion and corrosion resistance. The patent details parameters such as plating current density, layer weight, and the gradient concentration of iron within the plating layer, ensuring that the finished product satisfies high-quality standards for industrial applications.

Career Highlights

Kumura is associated with Kawasaki Steel Corporation, a leading company in the steel industry. His contributions have not only advanced the knowledge within his company but also have had a broader impact on metal plating technologies.

Collaborations

During his career, Kumura has collaborated with esteemed colleagues such as Hisatada Nakakoji and Seiji Nakajima. These partnerships have enhanced the innovation process, allowing for the combination of distinct expertise and ideas, which are crucial in developing robust technological advancements.

Conclusion

Hajime Kumura's patent and contributions to the steel plating industry reflect his commitment to innovation and quality. His work with Kawasaki Steel Corporation and collaboration with other inventors underscore the importance of teamwork in achieving groundbreaking advancements in engineering and materials science. As the demand for advanced materials increases, Kumura's contributions remain vital in shaping the future of steel manufacturing technologies.

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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