Toyama, Japan

Ryo Karasawa

This inventor holds 20 USPTO granted patents and 7 published patent applications and 1 EPO patent, primarily in Resist Underlayer Composition. Top assignees: Nissan Chemical Industries Limited, Nissan Chemical Corporation. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryo Karasawa. Retrieved from https://idiyas.com/inventor/ryo-karasawa

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

Calculating rank
USPTO Granted Patents = 20 

% Patents Active = 100.0

 

Average Co-Inventor Count = 4.4

ph-index = 3

Forward Citations = 23(Granted Patents)


Company Filing History:


Years Active: 2015-2026

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Areas of Expertise:
Cleaning Agent
Resist Underlayer
Film-Forming Composition
Novolac Resin
Polymer Structure
Acrylic Acid Ester
Fluorine Surfactant
Lithography
Adhesive Composition
Carbazole Resin
Epoxy Adduct
Triaryldiamine
20 patents (USPTO):Explore Patents

Title: Ryo Karasawa: A Pioneer in Resist Underlayer Film Technologies

Introduction

Ryo Karasawa, an accomplished inventor based in Toyama, Japan, has made significant contributions to the field of resist underlayer film technology. With a portfolio that boasts 18 patents, Karasawa continues to innovate in materials that enhance the performance of coatings used in various applications.

Latest Patents

Karasawa's latest patents include a resist underlayer film-forming composition that features an epoxy adduct with a long-chain alkyl group. This particular composition allows for the formation of a coating film with high flattening properties on a substrate. The epoxy adduct is derived from an epoxy group-containing compound that is reacted with an epoxy adduct-forming compound, incorporating branched alkyl groups with three or more carbon atoms. Furthermore, another notable patent involves a resist underlayer film-forming composition consisting of a novolac resin combined with an aromatic vinyl compound, resulting in an improved structural group formed by the reaction of the aromatic components.

Career Highlights

Karasawa has had a distinguished career, having worked with notable organizations such as Nissan Chemical Industries Limited and Nissan Chemical Corporation. His work in these companies has allowed him to develop innovative materials that propel advancements in the industry.

Collaborations

Throughout his career, Karasawa has collaborated with esteemed professionals including Tetsuya Shinjo and Keisuke Hashimoto. These partnerships have fostered a dynamic exchange of ideas and have contributed to the overall success of his projects.

Conclusion

Ryo Karasawa's inventive spirit and dedication to research and development continue to shape the landscape of resist underlayer film technologies. With his substantial patent portfolio and collaboration with leading professionals, he stands as a key figure in the drive towards innovation in this essential field.

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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