Company Filing History:
6 out of 35,734 
1 out of 259 
1 out of 128 Years Active: 1994-2011
Title: Hidemasa Kawai: Innovator in Battery Technology
Introduction
Hidemasa Kawai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of battery technology, holding a total of 6 patents. His work focuses on enhancing the performance and efficiency of secondary batteries, which are crucial for various applications in modern technology.
Latest Patents
One of Kawai's latest patents is for an anode for a secondary battery and a secondary battery using the same. This innovative design includes an anode that features an active material layer capable of absorbing and discharging lithium ions. The anode consists of a first layer primarily made of carbon and a second layer that incorporates elements with a theoretical capacity greater than that of graphite. This design aims to improve the overall efficiency and longevity of the battery.
Another notable patent is for a negative electrode for a secondary cell and a secondary cell using the same. This invention combines a carbon layer with a lithium-absorbing layer that contains particles with a theoretical capacity exceeding that of graphite. By adding elements with a theoretical capacity equal to or less than that of graphite, Kawai's design effectively suppresses volume expansion and contraction during charge and discharge cycles, thereby minimizing capacity deterioration over time.
Career Highlights
Hidemasa Kawai has worked with notable companies such as NEC Corporation and NEC Tokin Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in battery technology.
Collaborations
Kawai has collaborated with several talented individuals in his field, including Masato Shirakata and Hironori Yamamoto. Their combined expertise has contributed to the advancement of battery technology and the successful development of Kawai's patents.
Conclusion
Hidemasa Kawai is a distinguished inventor whose work in battery technology has led to significant advancements in the field. His innovative patents demonstrate a commitment to improving the efficiency and performance of secondary batteries, making a lasting impact on technology.