Ichihara, Japan

Koji Hayashi

This inventor holds 20 USPTO granted patents and 4 EPO patents, primarily in Epoxy Resin Technology. Top assignees: Dic Corporation, Chugai Seiyaku Kabushiki Kaisha, Research Association for Biotechnology. Active years: 2005-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Hayashi. Retrieved from https://idiyas.com/inventor/koji-hayashi-595ekj3w

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

Calculating rank

% Patents Active = 90.0


Average Co-Inventor Count = 3.5

ph-index = 3

Forward Citations = 125(Granted Patents)


Location History:

  • Osaka, JP (2005 - 2012)
  • Chiba, JP (2006 - 2018)
  • Ichihara, JP (2013 - 2024)

Company Filing History:


Years Active: 2005-2024

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Areas of Expertise:
Epoxy Resin
Curable Composition
Thermosetting Adhesive
Cured Product
Fiber-Reinforced Composite
Modified Phenolic Resin
Phosphorus-Containing Oligomer
Printed Circuit Board
Semiconductor Sealing Material
Active Ester Resin
Thermosetting Resin Composition
20 patents (USPTO):Explore Patents

Title: **Koji Hayashi: Innovator in Resin Technology**

Introduction

Koji Hayashi, an accomplished inventor residing in Ichihara, Japan, has made significant contributions to the field of resin technology. With a remarkable portfolio of 20 patents, he is known for his innovative approaches that enhance the performance of various materials.

Latest Patents

His latest inventions include a monofunctional phenolic compound and its corresponding active ester resin, which are designed to produce cured products with excellent dielectric properties and heat resistance. Additionally, he has developed a thermosetting resin composition along with a cured product derived from the same. This invention provides robust solutions with impressive heat resistance and dielectric characteristics, suitable for applications like printed wiring boards, semiconductor sealing materials, and build-up films. Specifically, the monofunctional phenolic compound features vinylbenzyl groups that enhance its functionality, indicating a forward-thinking approach to material science.

Career Highlights

Throughout his career, Koji Hayashi has worked with prominent companies, including Dic Corporation and Chugai Seiyaku Kabushiki Kaisha. His tenure at these firms highlights his influence in advancing resin technology and his commitment to delivering high-performance materials.

Collaborations

Hayashi has collaborated with notable colleagues such as Yutaka Satou and Kunihiro Morinaga. Their teamwork has undoubtedly contributed to the innovation and development of impressive new materials and technologies in their respective fields.

Conclusion

In summary, Koji Hayashi stands out as an influential inventor whose work with resin technology continues to impact various industries. His innovations, particularly in developing advanced compounds and compositions, demonstrate his dedication to enhancing material performance and addressing modern engineering challenges.

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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