Location History:
- Fukushima-ken, JP (2002 - 2013)
- Iwaki, JP (1996 - 2015)
- Fukushima, JP (2004 - 2019)
- Tokyo, JP (2016 - 2022)
Company Filing History:
27 out of 327 
7 out of 776 
5 out of 1,866 
Years Active: 1996-2022
Areas of Expertise:
Title: The Innovative Mind of Naohiro Sonobe: A Leader in Battery Technology
Introduction: Naohiro Sonobe, located in Tokyo, Japan, is a distinguished inventor with an impressive portfolio of 42 patents. His groundbreaking work primarily focuses on advancements in battery technology, specifically related to carbonaceous materials for non-aqueous electrolyte secondary batteries.
Latest Patents: Among Naohiro Sonobe's latest innovations is a method for producing a carbonaceous material for the negative electrode of non-aqueous electrolyte secondary batteries. This innovative method allows for the efficient production of large quantities of carbonaceous material from a carbon precursor that is impregnated with an alkali metal element or compound. Key steps in the production process involve heating the carbon precursor in a non-oxidizing gas atmosphere at temperatures ranging from 1000°C to 1500°C. Additionally, the treatment of exhaust gases arising from the heat treatment step is addressed, involving contact with water or an aqueous solution for effective management.
Another significant patent details a method for generating a carbonaceous material for non-aqueous electrolyte secondary battery anodes, enhancing the charge/discharge capacity and reducing the irreversible capacity of the batteries. This method includes a specific process for impregnating an alkali metal compound into the carbonaceous precursor, followed by a heat treatment under controlled conditions.
Career Highlights: Naohiro Sonobe has made substantial contributions to the field of battery technology through his tenure at Kureha Corporation and Kureha Kagaku Kogyo Kabushiki Kaisha. His innovative approaches and commitment to research have positioned him as a leading figure in advancing battery efficiency and performance.
Collaborations: Throughout his career, Sonobe has collaborated with notable colleagues in the industry, including Jiro Masuko and Takashi Wakahoi. These partnerships have further enriched his projects, leading to significant advancements in battery technology and sustainability.
Conclusion: Naohiro Sonobe's work exemplifies the spirit of innovation and dedication within the realm of battery technology. His patents not only advance the understanding of carbonaceous materials in non-aqueous electrolyte secondary batteries but also contribute to the future of efficient energy storage solutions. With a robust portfolio and collaborative efforts, Sonobe remains a pivotal figure in technological innovations impacting the energy sector.