Location History:
- Okayama, JP (2019)
- Bizen, JP (2008 - 2020)
Company Filing History:
7 out of 1,868 
2 out of 328 
2 out of 31 
Years Active: 2008-2020
Title: Innovative Contributions of Kenichi Koyakumaru
Introduction
Kenichi Koyakumaru, an esteemed inventor based in Bizen, Japan, has made significant strides in the field of materials science, particularly in the development of carbon materials for nonaqueous electrolyte secondary batteries. With an impressive portfolio of seven patents, his work exemplifies dedication to innovation and advancement in battery technologies.
Latest Patents
Among Koyakumaru's latest contributions are two noteworthy patents focused on carbon materials for nonaqueous electrolyte secondary batteries. The first patent details a carbonaceous material derived from plant-based char, designed to exhibit a decreased specific surface area. This innovation aims to enhance battery performance by providing excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The specific carbon material is produced through a meticulous heat treatment process under a non-oxidizing gas atmosphere, ensuring optimal characteristics for battery applications.
The second patent introduces a less hygroscopic carbonaceous material, which also originates from a plant-derived carbon source. This material is tailored for use as a negative electrode in nonaqueous electrolyte secondary batteries, promising improved battery characteristics. The particulate carbonaceous material is engineered with a unique core and skin structure, where the core consists of a calcined product, and the skin is fashioned from a material with superior electron emission capabilities upon electron beam irradiation.
Career Highlights
Koyakumaru's career showcases his transition through prominent companies including Kuraray Co., Ltd. and Kureha Corporation. His experiences in these organizations have significantly contributed to his expertise and innovative approaches in the development of advanced carbon materials for energy storage applications.
Collaborations
Throughout his professional journey, Koyakumaru has had the privilege of collaborating with notable colleagues such as Naohiro Sonobe and Yasuhiro Tada. These partnerships have enhanced his research and led to significant advancements in battery technology.
Conclusion
Kenichi Koyakumaru stands out as a leading inventor in the arena of carbonaceous materials for nonaqueous electrolyte batteries. His innovative patents highlight his commitment to improving battery technology and contributing to more efficient energy solutions. With a strong foundation in research and development, Koyakumaru’s work continues to impact the field positively, paving the way for future advancements in battery technologies.