Tokyo, Japan

Seiya Koseki

This inventor holds 3 USPTO granted patents and 7 published patent applications and 1 EPO patent. Top assignee: Toppan Holdings Inc.. Active years: 2026.

USPTO Granted Patents = 3 

% Patents Active = 33.3

 

Average Co-Inventor Count = 6.0

ph-index = 1


Company Filing History:


Years Active: 2026

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3 patents (USPTO):Explore Patents

Title: Seiya Koseki: Innovator in Inkjet Technology

Introduction

Seiya Koseki is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of inkjet technology, particularly in developing inks that enhance the durability and quality of printed materials. With a total of 3 patents to his name, Koseki continues to push the boundaries of innovation in this area.

Latest Patents

Koseki's latest patents focus on improving inkjet inks for various applications. One of his notable inventions is an inkjet ink designed to suppress photodiscoloration and photofading of printed images. This ink maintains lightfastness in both low and normal humidity environments. The formulation includes Blue No. 1 as a food dye and reduced isomaltulose as a fixing agent, ensuring the ink's stability and effectiveness. Another patent involves an inkjet ink that enhances transfer durability while maintaining excellent printing stability. This ink includes an edible dye, an adhesive, and a solvent mixture of water and ethanol.

Career Highlights

Seiya Koseki is associated with Toppan Holdings Inc., a leading company in printing and information technology. His work at Toppan has allowed him to collaborate with other talented professionals in the field, contributing to advancements in inkjet technology.

Collaborations

Koseki has worked alongside notable colleagues such as Yasuhisa Miyazawa and Risa Hashimoto. Their combined expertise has fostered a collaborative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Seiya Koseki's contributions to inkjet technology exemplify his commitment to innovation and quality. His patents reflect a deep understanding of the challenges in the printing industry and a dedication to finding effective solutions. Koseki's work continues to influence the future of inkjet applications and printed materials.

Profile summary based on public USPTO records.
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