Fukuyama, Japan

Yoichi Miyakawa

This inventor holds 7 USPTO granted patents and 1 EPO patent. Top assignees: Nkk Corporation, Jfe Steel Corporation. Active years: 2002-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoichi Miyakawa. Retrieved from https://idiyas.com/inventor/yoichi-miyakawa

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


% Patents Active = 57.1


Average Co-Inventor Count = 8.6

ph-index = 2

Forward Citations = 22(Granted Patents)


Location History:

  • Kasaoka, JP (2002 - 2008)
  • Hiroshima, JP (2009)
  • Fukuyama, JP (2011 - 2014)

Company Filing History:


Years Active: 2002-2014

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7 patents (USPTO):Explore Patents

Title: The Innovations of Yoichi Miyakawa: A Pioneer in Hot Dip Galvanized Steel Technology

Introduction: Yoichi Miyakawa, an accomplished inventor based in Fukuyama, Japan, has made significant contributions to the field of metallurgy with his innovative work on hot dip galvanized steel sheets. Holding a total of seven patents, his inventions have transformed manufacturing processes in various industries, particularly in automotive and electrical applications.

Latest Patents: One of Miyakawa's latest patents focuses on a novel hot dip galvanized steel sheet and its manufacturing method. This invention features a hot dip galvanizing layer with a flat surface, enhanced by a film composed of a compound containing zinc (Zn), iron (Fe), and oxygen (O). The film exhibits an average thickness between 10 to 100 nanometers, as determined by element analysis. Additionally, the specific ratio of iron to the sum of zinc and iron in the film is strategically controlled, contributing to its impressive press-formability, bondability, and phosphatability. These characteristics make the steel sheet particularly suitable for use in automobiles and electrical appliances, underscoring Miyakawa's innovative approach to material science.

Career Highlights: Throughout his career, Yoichi Miyakawa has been associated with prominent companies in the steel industry, including NKK Corporation and JFE Steel Corporation. His work in these organizations has enabled him to refine his innovations and bring them to market, further establishing his reputation as a leading inventor in his field.

Collaborations: Miyakawa has collaborated with esteemed colleagues such as Akira Gamou and Munehiro Ishioka. Together, they have contributed to advancing technologies that meet modern demands for efficiency and sustainability in manufacturing processes.

Conclusion: Yoichi Miyakawa's inventive spirit and dedication to enhancing the properties of hot dip galvanized steel have positioned him as a key figure in metallurgy. With seven patents to his name, his work continues to impact industries reliant on durable and reliable materials, 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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