Tokyo, Japan

Yoshihiko Iijima

This inventor holds 10 USPTO granted patents and 1 published patent application and 3 EPO patents. Top assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Kyoritsu Chemical Co., Ltd.. Active years: 2002-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiko Iijima. Retrieved from https://idiyas.com/inventor/yoshihiko-iijima

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

USPTO Granted Patents = 10 

% Patents Active = 60.0

 

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 2002-2019

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10 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Yoshihiko Iijima

Introduction

Yoshihiko Iijima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of materials science, particularly in the development of aqueous compositions and coatings. With a total of 10 patents to his name, Iijima's work has had a considerable impact on various industries.

Latest Patents

Iijima's latest patents include innovative aqueous liquid compositions, coatings, and functional coating films. One notable patent describes an aqueous liquid composition that contains a water-based medium, a polymer with hydroxyl and amino groups, and phosphonobutanetricarboxylic acid. This composition utilizes low-cost materials with minimal environmental impact. It retains adequate viscosity over long-term storage and forms a functional coating film that exhibits excellent adhesion, durability, solvent resistance, and waterproofness. Additionally, it can demonstrate various functions, including electrical conductivity and hydrophilicity.

Career Highlights

Throughout his career, Yoshihiko Iijima has worked with notable companies such as Dainichiseika Color & Chemicals Manufacturing Co., Ltd. and Kyoritsu Chemical & Co., Ltd. His experience in these organizations has allowed him to refine his expertise in developing advanced materials and coatings.

Collaborations

Iijima has collaborated with several talented individuals in his field, including Nobuyuki Kobayashi and Takanori Sannan. These collaborations have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Yoshihiko Iijima's innovative work in aqueous compositions and coatings has established him as a key figure in materials science. His patents reflect a commitment to sustainability and functionality, making significant strides in the industry. His contributions continue to influence the development of advanced materials.

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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