Location History:
- Shiga, JP (2009 - 2014)
- Nagahama, JP (2012 - 2016)
Company Filing History:
10 out of 116 
3 out of 2,348 Years Active: 2009-2016
Title: Inventor Profile: Yasushi Usami from Shiga, Japan
Introduction
Yasushi Usami is an accomplished inventor based in Shiga, Japan, recognized for his significant contributions to the field of polymer technologies. With a remarkable portfolio comprising ten patents, Usami has made strides in developing innovative materials for various applications.
Latest Patents
Among his latest innovations are two notable patents: the Polyolefin Resin Porous Film and a Non-Aqueous Electrolyte Cell Separator utilizing the same material. The Polyolefin Resin Porous Film is notable for its ease of production and effective use as a non-aqueous electrolyte cell separator. This film minimizes clogging and enhances cell output. It features specific properties such as an average flow diameter pressure ranging from 1500 to 2500 kPa and a bubble point pressure between 300 to 1500 kPa. Additionally, the film's air permeability (Pa) to bubble point pressure ratio is designed to be no greater than 0.35 sec/(100 ml·kPa). Another prominent invention is the Porous Polypropylene Film, which exhibits both high air permeability and puncture strength. This film boasts an air permeability of 700 seconds/100 ml or less while maintaining a puncture strength of 1.5 N or greater.
Career Highlights
Yasushi Usami has had a formidable career, contributing his expertise to renowned companies. He worked at Mitsubishi Plastics, Inc. and Mitsubishi Chemical Corporation, where he gained valuable experience in the development of polymer materials and product innovations. His work significantly advanced the capabilities of materials used in various industrial applications.
Collaborations
During his career, Yasushi has collaborated with notable professionals such as Takeyoshi Yamada and Toru Terakawa. These partnerships have enabled him to thrive in innovative environments, fostering creativity and enhancing his invention process.
Conclusion
Yasushi Usami stands out as a visionary inventor whose work in polymer technology has real-world applications, particularly in enhancing the performance of materials. His patents reflect a commitment to innovation, efficiency, and quality in product development, marking him as a key figure in the field of materials science.