This inventor holds 14 USPTO granted patents, plus 2 CIPO patents and 1 EPO patent. Top assignees: Toyota Jidosha Kabushiki Kaisha, Mitsui Minings & Melting Co., Ltd., Other. Active years: 1999-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hiroshima, JP (2002)
- Nagoya, JP (1999 - 2003)
- Takehara, JP (2000 - 2004)
- Mishima, JP (2004 - 2012)
Company Filing History:

Years Active: 1999-2012
Title: The Innovations of Koichi Numata
Introduction
Koichi Numata is a prominent inventor based in Mishima, Japan. He holds a total of 14 patents, showcasing his significant contributions to the field of fuel cell technology. His work has been instrumental in advancing the efficiency and functionality of fuel cells.
Latest Patents
Numata's latest patents include a groundbreaking fuel cell system that operates at a temperature of approximately 500°C. This innovative design features a solid oxide electrolyte layer formed on a hydrogen separable metal layer. The anode is equipped with a catalyst that accelerates the reforming reaction of methane. By reforming a hydrocarbon-containing material in a reformer, a fuel gas is produced. The lower reaction temperature allows for the generation of a fuel gas that contains both methane and hydrogen. In the fuel cells that receive this fuel gas, the reforming reaction of methane occurs simultaneously with the consumption of hydrogen. This endothermic methane reforming reaction absorbs heat generated during power production, thereby stabilizing the operational temperature of the fuel cells. Another notable patent involves a polymer electrolyte membrane fuel cell, where grooves in the cathode-side and anode-side separators are designed to facilitate air and hydrogen flow in a direction opposite to gravity. A surface treatment enhances hydrophilicity on the downstream side of the grooves, improving overall efficiency.
Career Highlights
Throughout his career, Numata has worked with notable companies such as Toyota Motor Corporation and Mitsui Mining & Smelting Company, Ltd. His experience in these organizations has contributed to his expertise in fuel cell technology and innovation.
Collaborations
Numata has collaborated with esteemed colleagues, including Satoshi Iguchi and Tsuneyoshi Kamada. Their joint efforts have furthered advancements in the field of fuel cells and related technologies.
Conclusion
Koichi Numata's contributions to fuel cell technology are significant and impactful. His innovative patents and collaborations reflect his dedication to advancing energy solutions. His work continues to influence the future of fuel cell applications and technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile