Location History:
- Tokyo, JP (1988)
- Kanagawa-ken, JP (1997 - 2001)
- Ayase, JP (2004)
- Kanagawa, JP (1990 - 2021)
Company Filing History:
19 out of 1,234 
2 out of 62 
2 out of 3 
Years Active: 1988-2021
Title: The Innovative Contributions of Hiroyoshi Sago in Battery Technology
Introduction
Hiroyoshi Sago is an accomplished inventor based in Kanagawa, Japan, recognized for his significant contributions to the field of battery technology, particularly in metal secondary batteries. With a remarkable portfolio of 20 patents, Sago’s innovations focus on improving the efficiency and safety of battery components.
Latest Patents
Among his latest patents, Sago has developed a separator for metal secondary batteries that enhances the uniformity of the electric field on the surface of the negative electrode, effectively preventing dendrite formation. This separator features a polymer electrolyte layer applied to a porous polyimide film. Additionally, he has patented a method for manufacturing a secondary battery separator, which includes a porous resin film with a three-dimensionally ordered structure. This innovation allows for effective communication between pores, significantly optimizing the battery's performance. The method encompasses the preparation of a microparticles-dispersed slurry, drying, and heat treatment that results in a structured microparticles-resin film, further revolutionizing the manufacturing process of lithium secondary batteries.
Career Highlights
Throughout his career, Hiroyoshi Sago has worked with esteemed organizations such as Tokyo Ohka Kogyo Co., Ltd. and Tokyo Metropolitan University. His experience across these institutions reflects his extensive expertise in materials science and engineering processes, which has greatly influenced the advancements in battery technologies.
Collaborations
Sago has collaborated with notable colleagues, including Shigemi Fujiyama and Hideyuki Mizuki. Their joint efforts have resulted in groundbreaking developments in battery separators and manufacturing techniques, pushing the boundaries of current technology.
Conclusion
Hiroyoshi Sago stands as a prominent figure in the realm of battery innovation. His extensive patent portfolio and collaborative efforts demonstrate a dedication to enhancing the efficiency and safety of energy storage solutions. As the demand for advanced battery technologies continues to rise, Sago's contributions will undoubtedly play a crucial role in shaping the future of this vital industry.