Tokyo, Japan

Seiji Doi

This inventor holds 8 USPTO granted patents and 6 published patent applications and 1 EPO patent. Top assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Kyoritsu Chemical Co., Ltd.. Active years: 2002-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Doi. Retrieved from https://idiyas.com/inventor/seiji-doi-wst8y6h2

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

USPTO Granted Patents = 8 

% Patents Active = 75.0

 

Average Co-Inventor Count = 5.9

ph-index = 2

Forward Citations = 14(Granted Patents)


Company Filing History:


Years Active: 2002-2025

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8 patents (USPTO):Explore Patents

Title: Seiji Doi: Innovator in Carbon Material Dispersion

Introduction

Seiji Doi is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of carbon material dispersion. With a total of eight patents to his name, Doi has made remarkable advancements that have practical applications in various industries.

Latest Patents

Doi's latest patents focus on innovative carbon material dispersions. One of his notable inventions provides a carbon material dispersion that maintains a high concentration of carbon material in a liquid medium containing an organic solvent. This dispersion is designed to prevent reaggregation, ensuring stable dispersion. The resulting products, such as inks, exhibit excellent electric conductivity. Another patent highlights a carbon material dispersion that retains excellent dispersibility over extended periods, even at high concentrations. This invention includes a polymeric dispersant that enhances the stability and performance of the dispersion.

Career Highlights

Throughout his career, Seiji Doi has worked with reputable companies, including Dainichiseika Color & Chemicals Manufacturing Co., Ltd. and Kyoritsu Chemical & Co., Ltd. His work in these organizations has allowed him to develop and refine his innovative ideas in carbon material technology.

Collaborations

Doi has collaborated with notable colleagues, including Yoshifumi Sugito and Minoru Takizawa. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Seiji Doi's contributions to carbon material dispersion demonstrate his innovative spirit and commitment to advancing technology. His patents not only showcase his expertise but also have the potential to impact various industries positively.

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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