Osaka, Japan

Kouji Koyama

This inventor holds 1 USPTO granted patent. Top assignee: Sumitomo Chemical Company, Limited. Active years: 2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Koyama. Retrieved from https://idiyas.com/inventor/kouji-koyama-vth9ft2f

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


Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 14(Granted Patents)


Company Filing History:


Years Active: 2003

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1 patent (USPTO):Explore Patents

Title: Kouji Koyama: Innovator in Acrylic Resin Technology

Introduction

Kouji Koyama is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of materials science, particularly in the development of acrylic resin films. His innovative work has led to advancements that enhance the performance and application of these materials.

Latest Patents

Koyama holds a patent for an acrylic resin film and a laminated film comprising the same. This invention involves an acrylic resin film made from a composition that includes 95 to 50 wt. parts of an acrylic resin with a glass transition temperature of 60 to 110 °C and a weight average molecular weight of 70,000 to 600,000. Additionally, it contains 5 to 50 wt. parts of a multilayer-structured acrylic polymer featuring an elastomeric layer. The resulting films exhibit improved thickness accuracy, surface smoothness, and surface hardness compared to conventional acrylic resin films. These properties make them suitable for various applications, including simultaneous injection molding, lamination, agricultural films, display films, masking films, and paint-substitute films.

Career Highlights

Kouji Koyama is associated with Sumitomo Chemical Company, Limited, where he has been instrumental in advancing the company's research and development efforts in polymer technology. His work has not only contributed to the company's portfolio but has also positioned it as a leader in the field of innovative materials.

Collaborations

Koyama has collaborated with esteemed colleagues such as Yoshio Tadokoro and Kiyoshi Mutou. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise, further enhancing the quality of their research and innovations.

Conclusion

Kouji Koyama's contributions to acrylic resin technology exemplify the impact of innovation in materials science. His patented work continues to influence various industries, showcasing the importance of research and development in creating 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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