Kimitsu, Japan

Rikio Chiziiwa

This inventor holds 2 USPTO granted patents. Top assignee: Nippon Steel Corporation. Active years: 1991-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Rikio Chiziiwa. Retrieved from https://idiyas.com/inventor/rikio-chiziiwa

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 = 6.0

ph-index = 2

Forward Citations = 11(Granted Patents)


Company Filing History:


Years Active: 1991-1992

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2 patents (USPTO):Explore Patents

Title: The Innovations of Rikio Chiziiwa

Introduction

Rikio Chiziiwa is a notable inventor based in Kimitsu, Japan. He has made significant contributions to the field of building construction steel, focusing on enhancing fire resistance and high-temperature characteristics. With a total of 2 patents, his work is recognized for its practical applications in the construction industry.

Latest Patents

Chiziiwa's latest patents include a process for manufacturing building construction steel that boasts excellent fire resistance. This innovative process involves heating a slab with a specific steel composition, which includes appropriate amounts of molybdenum (Mo) and niobium (Nb) added to low-carbon and low-manganese steel. The rolling process is completed at a relatively high temperature, followed by a carefully controlled air-cooling step. This method allows for the transformation from austenite to ferrite, ensuring that the steel maintains its high-temperature characteristics while being economically viable.

Career Highlights

Rikio Chiziiwa is associated with Nippon Steel Corporation, a leading company in the steel industry. His work has contributed to advancements in steel manufacturing processes, particularly in enhancing the performance of construction materials. His innovative approaches have positioned him as a key figure in the development of fire-resistant building materials.

Collaborations

Chiziiwa has collaborated with esteemed colleagues such as Hiroshi Tamehiro and Yuzuru Yoshida. Their combined expertise has furthered the research and development of high-performance steel products.

Conclusion

Rikio Chiziiwa's contributions to the field of building construction steel exemplify the importance of innovation in material science. His patents reflect a commitment to improving safety and performance in construction, making a lasting impact on the industry.

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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