Junichi Fujishige

Title: Innovations of Junichi Fujishige

Introduction

Junichi Fujishige is a notable inventor based in Hyogo, Japan. He has made significant contributions to the field of battery technology, particularly in the development of lithium-ion secondary batteries. With a total of six patents to his name, Fujishige's work has had a considerable impact on the advancement of electrical devices.

Latest Patents

Fujishige's latest patents include innovations in lithium-ion secondary batteries and the electrical devices that utilize them. One of his key inventions describes a lithium-ion secondary battery that features a positive electrode with an active material layer on a current collector, a negative electrode with a similar configuration, and a separator that is impregnated with a non-aqueous electrolyte solution. The positive electrode active material layer consists of a positive electrode active material and a binder, while the negative electrode active material layer contains a negative electrode active material and a binder. Notably, the binder in the negative electrode active material layer is a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid. Additionally, the separator is made from a polymeric base material that includes an inorganic compound or a polymer with a melting point or glass transition temperature of 140°C or higher. Another significant patent involves a binder for nonaqueous electrolyte secondary battery electrodes, which includes a copolymer of vinyl alcohol and an ethylenically unsaturated carboxylic acid alkali metal neutralized product, along with a polyalkylene oxide.

Career Highlights

Fujishige has worked with prominent organizations such as Sumitomo Seika Chemicals Co., Ltd. and the National Institute of Advanced Industrial Science and Technology. His experience in these institutions has allowed him to refine his expertise in battery technology and contribute to various innovative projects.

Collaborations

Throughout his career, Fujishige has collaborated with notable colleagues, including Yuji Kinpara and Takashi Mukai. These partnerships have facilitated the exchange of ideas and fostered advancements in their respective fields.

Conclusion

Junichi Fujishige's contributions to the field of battery technology exemplify the spirit of innovation. His patents and collaborations reflect a commitment to advancing electrical devices and improving energy storage solutions. His work continues to influence the industry and inspire future developments in technology.