Tomokazu Kumeuchi

Title: The Innovations of Tomokazu Kumeuchi

Introduction

Tomokazu Kumeuchi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of secondary battery technology. With a total of four patents to his name, Kumeuchi's work focuses on enhancing the performance and longevity of batteries.

Latest Patents

Kumeuchi's latest patents include a positive electrode active material for secondary batteries, a positive electrode for secondary batteries, and a method for producing a positive electrode active material for secondary batteries. His innovations aim to extend the life of secondary batteries by preventing increases in resistance when stored at elevated temperatures and during charge-discharge cycles. The positive electrode active material he developed comprises lithium manganate and lithium nickelate, with lithium manganate represented by the formula LiMnO. Additionally, he has patented a method for producing a pressurized package for a film-packed battery, which involves a pre-charging step while pressure is applied.

Career Highlights

Throughout his career, Kumeuchi has worked with various companies, including NEC Corporation. His expertise in battery technology has positioned him as a key figure in the industry.

Collaborations

Kumeuchi has collaborated with notable coworkers such as Masato Shirakata and Masaharu Satoh. Their combined efforts have contributed to advancements in battery technology.

Conclusion

Tomokazu Kumeuchi's innovative work in secondary battery technology has led to significant advancements in the field. His patents reflect a commitment to improving battery performance and longevity.