Yokohama, Japan

Thoru Souma

This inventor holds 2 USPTO granted patents. Top assignee: Nippon Oil Fats Co., Ltd.. Active years: 1992-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Thoru Souma. Retrieved from https://idiyas.com/inventor/thoru-souma

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 = 4.0

ph-index = 2

Forward Citations = 28(Granted Patents)


Company Filing History:


Years Active: 1992-1993

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2 patents (USPTO):Explore Patents

Title: Thoru Souma: Innovator in Chromatic-Color Metal Flake Pigments

Introduction

Thoru Souma is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of pigment technology, particularly in the development of chromatic-color metal flake pigments. With a total of 2 patents to his name, Souma's work showcases his innovative approach to enhancing aesthetic qualities in various applications.

Latest Patents

Souma's latest patents include a method for the preparation of chromatic-color metal flake pigments. This process involves hydrolyzing an organic titanate ester compound, such as tetraisopropoxy titanium, in the presence of base metal flakes suspended in an organic medium with a pH of 4 to 8. The resulting pigment exhibits iridescent color tones that vary delicately depending on the thickness of the titanium oxide coating layer. This pigment is noted for its high chemical stability, particularly against acids, due to the uniform and dense coating layer of titanium oxide. As a result, it serves as an effective coloring agent in water-borne compositions. The application fields for this inventive pigment include colored coating compositions, ink compositions, cosmetic preparations, and molding compounds of plastic resins.

Career Highlights

Thoru Souma is currently employed at Nippon Oil Fats Co., Ltd., where he continues to innovate in the field of pigment technology. His work has garnered attention for its practical applications and aesthetic value, contributing to advancements in various industries.

Collaborations

Souma has collaborated with notable coworkers, including Toshihiko Nakamichi and Naoe Takai. Their combined expertise has furthered the development of innovative solutions in pigment technology.

Conclusion

Thoru Souma's contributions to the field of chromatic-color metal flake pigments highlight his innovative spirit and dedication to enhancing aesthetic qualities in various applications. His patents reflect a commitment to advancing technology in the pigment 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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