Location History:
- Yokohama, JA (1976)
- Yokohama, JP (1980 - 1985)
Company Filing History:
Years Active: 1976-1985
Title: Shigeyuki Narisawa – Innovator in Polyurethane Technology
Introduction
Shigeyuki Narisawa is a notable inventor based in Yokohama, Japan, recognized for his contributions to the field of polymer chemistry. With a total of four patents to his name, Narisawa has made significant advancements in the production of polyurethane elastomers and polyphenylenesulfide materials. His work has been instrumental in enhancing the properties and applications of these versatile polymers.
Latest Patents
Narisawa's most recent innovations include a patented process for producing polyurethane elastomers through reaction injection molding. This method utilizes at least two essential components: a high molecular weight polyol combined with a chain extender, and a polyisocyanate compound. A significant aspect of this patent is that at least 80% of the high molecular weight polyol is composed of polyoxyalkylene polyol, which contains a specific distribution of oxyethylene groups.
Another noteworthy patent focuses on the development of moldable polyphenylenesulfide. This patent details a heat treatment process of a partially crosslinked or noncrosslinked polyphenylenesulfide at temperatures exceeding 290°C, conducted in an oxygen-deficient atmosphere. This innovation greatly enhances the usability of polyphenylenesulfide in various industrial applications.
Career Highlights
Shigeyuki Narisawa is affiliated with Asahi Glass Company, Limited, a leading manufacturer known for its advancements in glass and chemical products. His work at Asahi has not only contributed to his personal achievements but has also supported the company's reputation in the materials science industry.
Collaborations
Throughout his career, Narisawa has collaborated with esteemed colleagues including Shohei Yoshida and Hiroshi Kawahara. These partnerships have fostered a productive environment for innovation, allowing the team to explore new ideas and improve existing technologies in polymer production.
Conclusion
In summary, Shigeyuki Narisawa is an influential figure in the development of advanced polymer technologies. His patented innovations showcase his expertise and commitment to enhancing material properties, making significant contributions to the industry. His collaborations and work with Asahi Glass Company reflect a dedication to advancing the field of polymer science for the betterment of manufacturing practices and product development.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.