Hirofumi Yasumiishi

Title: Hirofumi Yasumiishi: Innovator in Battery Technology

Introduction

Hirofumi Yasumiishi, an inventive mind from Kawasaki, Japan, has made significant contributions to the field of battery technology. As a talented inventor, he holds two patents that reflect his innovative approach to secondary batteries. With a career rooted in research and development, Yasumiishi has focused on enhancing battery performance and efficiency.

Latest Patents

Yasumiishi's recent patents include a "Method of producing a secondary battery" and a "secondary battery." The method described provides a unique approach to preparing battery architecture with a positive electrode, negative electrode, and an electrolyte. His method involves adjusting the positive electrode potential to a range of 3.4 V to 3.9 V and the negative electrode potential to 1.5 V to 2.0 V. Moreover, the preparation includes holding the battery architecture at a specified temperature for optimal performance. The positive electrode features a lithium-nickel-cobalt-manganese composite oxide while the negative electrode is composed of a niobium-titanium composite oxide. This innovation plays a crucial role in the development of efficient secondary batteries.

Another notable patent focuses on an active material that consists of a composite oxide with a tetragonal crystal structure, represented by the formula LiTiNbMO. This formulation emphasizes the innovative nature of Yasumiishi’s work, providing advancements in the composition and performance of battery technologies.

Career Highlights

Hirofumi Yasumiishi is associated with Kabushiki Kaisha Toshiba, a prominent company in the technology sector. His expertise in battery technology, particularly in secondary batteries, has positioned him as a key player in the development of next-generation energy storage solutions. His contributions are critical in driving advances in battery efficiency and sustainability.

Collaborations

Throughout his career, Yasumiishi has collaborated with talented coworkers Yasuhiro Harada and Kazuki Ise. Together, they have worked towards realizing innovative solutions that enhance battery technology and performance. Such collaborations further reflect the importance of teamwork in pushing the boundaries of scientific advancements in the energy sector.

Conclusion

Hirofumi Yasumiishi exemplifies the spirit of innovation in the field of battery technology. With his remarkable patents and contributions to the industry, he continues to pave the way for advancements in sustainable energy solutions. His work not only supports the future of secondary batteries but also underscores the vital role of inventors in driving technological progress.