Tokyo, Japan

Yoshikatsu Shiraokawa

This inventor holds 3 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignees: Showa Denko Materials Co., Ltd., Resonac Corporation. Active years: 2021-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshikatsu Shiraokawa. Retrieved from https://idiyas.com/inventor/yoshikatsu-shiraokawa

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

Calculating rank
USPTO Granted Patents = 3 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.1

ph-index = 1


Company Filing History:


Years Active: 2021-2025

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3 patents (USPTO):Explore Patents

Title: Innovations of Yoshikatsu Shiraokawa

Introduction

Yoshikatsu Shiraokawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced laminates and semiconductor packages. With a total of 3 patents to his name, Shiraokawa's work has had a considerable impact on the electronics industry.

Latest Patents

Shiraokawa's latest patents include a copper-clad laminate, a printed wiring board, and a semiconductor package. His innovations provide a copper-clad laminate that features an insulating layer containing a resin and a surface-treated copper foil. The copper foil has a metal-treated layer containing zinc, with a specific zinc content ranging from 10 to 2,500 μg/dm. Additionally, he has developed a thermosetting resin composition that includes a maleimide compound, an epoxy resin, a copolymer resin, treated silica, and a flame retardant dispersion. These inventions are crucial for enhancing the performance and reliability of electronic components.

Career Highlights

Throughout his career, Yoshikatsu Shiraokawa has worked with prominent companies such as Showa Denko Materials Co., Ltd. and Resonac Corporation. His experience in these organizations has allowed him to refine his expertise in materials and engineering, contributing to his innovative patents.

Collaborations

Shiraokawa has collaborated with notable colleagues, including Keisuke Kushida and Hiroshi Shimizu. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

Yoshikatsu Shiraokawa's contributions to the field of materials science and electronics are noteworthy. His innovative patents and collaborations reflect his dedication to advancing technology. His work continues to influence the industry and inspire 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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