This inventor holds 2 USPTO granted patents. Top assignees: Toyo Gosei Kogyo Co., Ltd., Agency of Industrial Science and Technology. Active years: 1990-1997.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 21 
1 out of 1,430 
Years Active: 1990-1997
Title: Keiichi Hayashi: Innovator in Photosensitive Materials
Introduction
Keiichi Hayashi is a notable inventor based in Funabashi, Japan. He has made significant contributions to the field of photosensitive materials, particularly in the development of colored resin compositions and contrast-enhancing agents for photolithography. With a total of two patents to his name, Hayashi's work has implications for various applications, including liquid crystal display technology.
Latest Patents
Hayashi's latest patents include a photosensitive colored resin composition and a contrast-enhancing agent for photolithography. The photosensitive colored resin composition is designed for the formation of colored images and consists of a resin-based material that hardens with acid, a photoreactive acid-releasing agent, and a pigment. The colored image formation method is particularly suitable for color filters used in liquid crystal display panels. His contrast-enhancing agent is utilized as an overcoating on a positive-working photoresist layer, enhancing the contrast of the photoresist during low-contrast light exposure. This composition includes a watersoluble polymer and a specific photo-bleachable organic compound with a nitrogen-containing heterocyclic aromatic structure.
Career Highlights
Throughout his career, Keiichi Hayashi has worked with prominent companies, including Toyo Gosei Kogyo Co., Ltd. He has also held the position of Director-General of the Agency of Industrial Science and Technology, where he contributed to advancing industrial research and development in Japan.
Collaborations
Hayashi has collaborated with notable individuals in his field, including Hideo Kikuchi and Kunihiro Ichimura. Their combined expertise has likely contributed to the innovative advancements in photosensitive materials.
Conclusion
Keiichi Hayashi's contributions to the field of photosensitive materials demonstrate his innovative spirit and dedication to advancing technology. His patents reflect a commitment to enhancing the functionality and efficiency of materials used in modern applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile