Kohei Ogawa

Title: Kohei Ogawa: Innovator in Polyimide Film and Lithium Ion Battery Technology

Introduction

Kohei Ogawa is a notable inventor based in Settsu, Japan. He has made significant contributions to the fields of materials science and battery technology. With a total of three patents to his name, Ogawa's work focuses on innovative solutions that enhance the performance and efficiency of various materials.

Latest Patents

One of Ogawa's latest patents is for a transparent polyimide film and its production method. This invention relates to a transparent polyimide film that contains a polyimide and a phosphate ester. The content of the phosphate ester is specified to be 3 parts by mass or more, with a preference for 5 to 100 parts by mass based on 100 parts by mass of the polyimide. The invention emphasizes the use of a phosphate ester that effectively reduces birefringence while minimizing the decrease in the tensile modulus of the film. The production method involves dissolving a solvent-soluble polyimide resin and a phosphate ester in an organic solvent, applying the solution onto a substrate, and subsequently removing the organic solvent.

Another significant patent by Ogawa is a collector for bipolar lithium ion secondary batteries. This collector comprises a first conductive layer created by adding a conductive filler to a base containing an imide group-containing resin. Additionally, it features a second conductive layer designed to block lithium ions, which includes a blocking resin layer and a metal layer. This innovative collector is strategically used with the first conductive layer positioned on the positive electrode active material layer side.

Career Highlights

Throughout his career, Kohei Ogawa has worked with prominent companies such as Kaneka Corporation and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in materials and battery technology.

Collaborations

Ogawa has collaborated with notable coworkers, including Hitoshi Tamai and Yoshiki Nakagawa. Their combined expertise has contributed to the advancement of technology in their respective fields.

Conclusion

Kohei Ogawa's contributions to the development of transparent polyimide films and lithium ion battery technology highlight his innovative spirit and dedication to advancing materials science. His patents reflect a commitment to improving the efficiency and functionality of modern technologies.