This inventor holds 2 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1976.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1976
Title: Koichi Ishii: Innovator in Dyeing Processes
Introduction
Koichi Ishii is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of dyeing processes, particularly in the development of methods for dyeing acid-modified polyester fibers. With a total of 2 patents, his work has garnered attention in the textile industry.
Latest Patents
Ishii's latest patents include a process for dyeing acid-modified polyester fibers. This innovative method involves contacting the fibers with a dye bath containing a thiazoleazo-type cationic dye, which results in a bright blue shade with excellent light fastness. Another patent focuses on the manufacture of coumarin derivatives, detailing an improved method for preparing a coumarin dye through the reaction of a specific diamine with a designated compound.
Career Highlights
Throughout his career, Koichi Ishii has been associated with Sumitomo Chemical Company, Limited, where he has applied his expertise in dye chemistry. His contributions have played a crucial role in advancing dyeing technologies and improving the quality of textile products.
Collaborations
Ishii has collaborated with notable colleagues such as Masaaki Ohkawa and Seizo Konishi. These partnerships have fostered innovation and have been instrumental in the development of new dyeing techniques.
Conclusion
Koichi Ishii's work in dyeing processes exemplifies the impact of innovation in the textile industry. His patents reflect a commitment to enhancing dyeing methods and improving product quality.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile