Location History:
- Shiroishi, JP (1987)
- Sapporo, JP (1987 - 1988)
Company Filing History:
Years Active: 1987-1988
Title: Innovations by Junichi Umetsu in Polyacetylene Film Production
Introduction
Junichi Umetsu is a notable inventor based in Sapporo, Japan. He has made significant contributions to the field of polymer science, particularly in the production of polyacetylene films. With a total of three patents to his name, Umetsu's work has advanced the methods of polymerization and film production.
Latest Patents
Umetsu's latest patents include innovative methods and apparatuses for producing polyacetylene films. One of his patents describes a catalytic film polymerization of acetylene. This apparatus allows for the production of a polyacetylene film by contacting acetylene gas with a Ziegler-Natta catalyst. The design includes a catalyst introduction conduit that facilitates the polymerization process within a vessel. The relative rotation between the conduit and the vessel ensures that the catalyst is evenly distributed, resulting in a uniform film thickness over a large area.
Another patent outlines a method for producing polyacetylene film by introducing acetylene gas into a vessel containing Ziegler-Natta catalyst. This method features a film-forming projecting flat section that enhances the coating of the catalyst on the vessel's inner surface. By optimizing the catalyst's distribution, this method improves production efficiency and ensures high-quality films with consistent thickness.
Career Highlights
Umetsu is currently associated with Hoxan Corporation, where he continues to innovate in the field of polymer technology. His work has garnered attention for its practical applications in various industries, particularly in materials science and engineering.
Collaborations
Umetsu collaborates with Ichiro Hide, contributing to the advancement of their shared research interests in polymerization techniques and film production.
Conclusion
Junichi Umetsu's contributions to the field of polyacetylene film production demonstrate his innovative spirit and commitment to advancing polymer science. His patents reflect a deep understanding of the complexities involved in polymerization processes, paving the way for future advancements in the industry.