Location History:
- Tokyo, JP (2017 - 2018)
- Yachiyo, JP (2017 - 2018)
- Chiba, JP (2019)
Company Filing History:
Years Active: 2017-2019
Title: Innovations of Hirofumi Yasumiishi in Lithium-Ion Battery Technology
Introduction
Hirofumi Yasumiishi is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of lithium-ion battery technology, holding a total of 9 patents. His work focuses on enhancing the performance and efficiency of lithium-ion batteries, which are crucial for various applications in modern technology.
Latest Patents
Yasumiishi's latest patents include innovative developments in electrode materials for lithium-ion secondary batteries. One of his notable inventions is an electrode material that comprises an inorganic particle coated with a carbonaceous film. This film contains a carbon amount ranging from 0.8 to 2.5% by mass, and the micropores have a diameter range of 2 to 200 nm, with a volume of 3×10 cm/g. Additionally, he has developed a method for manufacturing this electrode material, which involves several steps, including immersing the inorganic particle in an aqueous solution and calcinating the dried substance in a non-oxidative atmosphere. Another significant patent involves a cathode material made of agglomerated secondary particles formed from primary particles of electrode active material, specifically a transition metal lithium phosphate compound coated with a carbonaceous material.
Career Highlights
Hirofumi Yasumiishi is currently employed at Sumitomo Osaka Cement Co., Ltd., where he continues to innovate in the field of battery technology. His expertise and dedication have led to advancements that enhance the performance of lithium-ion batteries, making them more efficient and reliable for various applications.
Collaborations
Yasumiishi has collaborated with notable coworkers, including Ryuuta Yamaya and Takao Kitagawa. Their combined efforts contribute to the ongoing research and development in battery technology, fostering innovation and progress in the industry.
Conclusion
Hirofumi Yasumiishi's contributions to lithium-ion battery technology through his patents and collaborations highlight his role as a key innovator in the field. His work not only advances battery performance but also supports the growing demand for efficient energy storage solutions.