Hyogo, Japan

Nobuki Shiragaki

This inventor holds 4 USPTO granted patents, plus 1 CIPO patent and 3 EPO patents. Top assignees: Nippon Steel & Sumikin Coated Sheet Corporation, Nippon Steel Sumitomo Metal Corporation, Nihon Parkerizing Co., Ltd.. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobuki Shiragaki. Retrieved from https://idiyas.com/inventor/nobuki-shiragaki

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 = 7.0

ph-index = 2

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2015-2026

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4 patents (USPTO):Explore Patents

Title: Nobuki Shiragaki: Innovator in Steel Coating Technologies

Introduction

Nobuki Shiragaki is a prominent inventor based in Hyogo, Japan, known for his contributions to the field of steel coating technologies. With a total of three patents to his name, he has made significant advancements in the production and application of aluminum-zinc plated steel sheets.

Latest Patents

Shiragaki's latest patents include innovative methods for producing aluminum-zinc plated steel sheets. One of his notable inventions is an aluminum-zinc plated steel sheet that features a covering film containing a basic compound of a transition metal, along with metallic cobalt. This invention specifies precise amounts of the covering film and transition metals to enhance the properties of the plated steel sheet. Another significant patent involves a surface-coated aluminum and zinc plated steel sheet, which utilizes a composite coating film formed by applying an aqueous surface treatment agent. This treatment agent includes a water-dispersible resin and a cobalt compound, ensuring a high-quality finish on the steel sheet.

Career Highlights

Throughout his career, Nobuki Shiragaki has worked with reputable companies such as Nippon Steel & Sumikin Coated Sheet Corporation and Nippon Steel & Sumitomo Metal Corporation. His experience in these organizations has allowed him to refine his expertise in steel production and coating technologies.

Collaborations

Shiragaki has collaborated with notable coworkers, including Hiroshi Kanai and Nobuyuki Shimoda, contributing to various projects that have advanced the field of steel coatings.

Conclusion

Nobuki Shiragaki's innovative work in aluminum-zinc plated steel sheets has made a significant impact on the industry. His patents reflect a commitment to enhancing the quality and performance of steel products.

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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