Company Filing History:
11 out of 35,734 
2 out of 832,880 Years Active: 2001-2011
Title: Yutaka Bannai: Innovator in Battery Technology
Introduction
Yutaka Bannai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of battery technology, holding a total of 13 patents. His work focuses on enhancing the performance and efficiency of secondary batteries, which are crucial for various applications in modern technology.
Latest Patents
Bannai's latest patents include innovative designs for anodes used in secondary batteries. One of his notable inventions is an anode that comprises an anode active material layer designed to absorb and discharge lithium ions. This layer consists of a first layer primarily made of carbon and a second layer that includes elements with a theoretical capacity greater than that of graphite. This design aims to improve the overall efficiency and longevity of secondary batteries.
Another significant patent involves a negative electrode for secondary cells. This design features a carbon layer and a lithium-absorbing layer that contains particles with a theoretical capacity exceeding that of graphite. By incorporating elements with a theoretical capacity equal to or less than that of graphite, Bannai's design effectively suppresses volume expansion and contraction during charge and discharge cycles, thereby minimizing capacity deterioration over time.
Career Highlights
Throughout his career, Yutaka Bannai has worked with notable companies, including NEC Corporation. His experience in the industry has allowed him to develop cutting-edge technologies that address the challenges faced by modern battery systems.
Collaborations
Bannai has collaborated with esteemed colleagues such as Masaharu Satoh and Hiroshi Yageta. These partnerships have contributed to the advancement of battery technology and the successful development of innovative solutions.
Conclusion
Yutaka Bannai's contributions to battery technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of more efficient and reliable energy storage solutions.