This inventor holds 36 USPTO granted patents and 2 published patent applications and 5 EPO patents, primarily in Battery Technology. Top assignees: Nec Corporation, Nippon Electric Co., Ltd., Toyota Jidosha Kabushiki Kaisha. Active years: 1976-2021.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Tokyo, JA (1976 - 1977)
- Kanagawa, JP (2012 - 2017)
- Sagamihara, JP (2014 - 2017)
- Tokyo, JP (1980 - 2021)
Company Filing History:
25 out of 36,684 
6 out of 1,038 
5 out of 38,912 
Years Active: 1976-2021
Areas of Expertise:
Title: Innovations by Kazuaki Utsumi: Pioneering Battery Technology in Tokyo
Introduction
Kazuaki Utsumi, based in Tokyo, Japan, is a prolific inventor renowned for his contributions in the field of battery technology. Holding 36 patents, Utsumi's work primarily focuses on advanced battery state estimation and temperature management, enhancing the performance and reliability of battery systems.
Latest Patents
Among his latest inventions, Utsumi developed a Temperature Estimating Apparatus, which utilizes a complex impedance measurement to derive a slope function representing the relationship between battery impedance and temperature. This innovative device accurately estimates battery temperature, enabling more effective battery management.
Another notable invention is the Battery State Estimating Apparatus. This apparatus acquires multiple complex impedance values at varying temperatures and calculates the slope of these values in a complex plane. By storing relations between impedance slopes and battery states, the apparatus can predict the condition of the battery, contributing significantly to battery health monitoring.
Career Highlights
Utsumi has made significant advancements while working for leading companies, including NEC Corporation and Nippon Electric Co., Ltd. His tenure at these organizations has facilitated the development of cutting-edge technologies that push the boundaries of current battery applications.
Collaborations
Throughout his career, Kazuaki Utsumi has collaborated with eminent professionals, including colleagues Yuzo Shimada and Tomeji Ohno. Their collective expertise has been instrumental in refining battery technologies and ensuring the successful realization of innovative ideas into tangible products.
Conclusion
Kazuaki Utsumi stands as a remarkable figure in the world of innovation, particularly in battery technology. His extensive patent portfolio and collaborative work have not only advanced industry standards but have also paved the way for future inventions in energy storage solutions. As technology continues to evolve, Utsumi's contributions will likely remain pivotal in shaping the future of battery management systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile