This inventor holds 5 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent. Top assignees: Mitsui Minings & Melting Co., Ltd., Other. Active years: 2000-2023.
Location History:
- Hiroshima, JP (2002)
- Takehara, JP (2000 - 2004)
- Tokyo, JP (2023)
Company Filing History:
4 out of 817 
1 out of 834,307 Years Active: 2000-2023
Title: Tsuneyoshi Kamada: Innovator in Zinc Foil Technology
Introduction
Tsuneyoshi Kamada is a notable inventor based in Takehara, Japan. He has made significant contributions to the field of battery technology, particularly through his innovative work on zinc foil and its applications in batteries. With a total of 5 patents to his name, Kamada's inventions are paving the way for advancements in energy storage solutions.
Latest Patents
Kamada's latest patents include a zinc foil that serves as a primary battery negative electrode active material. This zinc foil is designed to reduce the amount of gas generated during the long-term storage of batteries, compared to conventional zinc foils. The composition of the zinc foil includes zinc as the main material and bismuth, with a bismuth content ranging from 100 ppm to 10,000 ppm. The zinc crystal grain size is maintained between 0.2 μm and 8 μm, while the bismuth crystal grain size is less than 1000 nm. Additionally, the zinc foil is free of aluminum and/or lead, or if present, the aluminum content is limited to 1% or less, and the lead content to 200 ppm or less. Another significant patent involves a process for preparing lithium manganate in a spinel structure, which enhances the performance of manganese dioxide in battery applications.
Career Highlights
Throughout his career, Tsuneyoshi Kamada has worked with prominent companies, including Mitsui Mining & Smelting Co., Ltd. His expertise in materials science and battery technology has positioned him as a key figure in the development of innovative energy solutions.
Collaborations
Kamada has collaborated with notable colleagues such as Koichi Numata and Shinji Arimoto. Their combined efforts have contributed to the advancement of battery technologies and materials.
Conclusion
Tsuneyoshi Kamada's work in the field of zinc foil technology and battery innovation highlights his role as a significant inventor. His contributions are essential for the future of energy storage solutions, making him a noteworthy figure in the industry.