Shizuoka, Japan

Takumi Otsubo

This inventor holds 1 USPTO granted patent and 1 published patent application. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takumi Otsubo. Retrieved from https://idiyas.com/inventor/takumi-otsubo

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 1 

% Patents Active = 100.0

Average Co-Inventor Count = 6.0

ph-index = 1


Company Filing History:


Years Active: 2018

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1 patent (USPTO):Explore Patents

Title: Innovator Takumi Otsubo: Advancements in Fuel Cell Vehicle Coolants

Introduction: Takumi Otsubo, a distinguished inventor located in Shizuoka, Japan, has made significant strides in the field of fuel cell technology. With one patented invention to his name, he has contributed to the development of more reliable and stable coolant solutions for fuel cell vehicles, enhancing their efficiency and performance.

Latest Patents: Takumi Otsubo holds a patent titled "Fuel cell vehicle coolant having improved storage stability and method for producing the same." This invention provides a stock solution composition for fuel cell vehicle coolant that is utilized by dilution with a water-based diluent. The innovative method for producing this coolant involves selecting a raw material ethylene glycol compound with specific purity and conductivity characteristics to ensure enhanced storage stability, thus benefiting the overall functionality of fuel cell vehicles.

Career Highlights: Takumi Otsubo works at Toyota Jidosha Kabushiki Kaisha (often referred to simply as Toyota), a leading automotive company known for its commitment to innovation and sustainability. His career at Toyota has positioned him at the forefront of research and development in advanced technologies, particularly in fuel cells, which are essential for the future of green transportation.

Collaborations: Throughout his career, Takumi has collaborated with talented colleagues, including Yuichiro Sugiyama and Kazuhiro Miyajima. These partnerships have facilitated knowledge-sharing and innovative thinking, further driving advancements in the automotive sector and contributing to the success of their projects.

Conclusion: Takumi Otsubo is an inspiring inventor whose contributions to fuel cell technology exemplify the spirit of innovation at Toyota. His patent on coolant solutions not only showcases his expertise but also highlights the need for advancements in sustainable vehicle technologies. As the industry continues to evolve, inventors like Otsubo play a crucial role in shaping a cleaner, more efficient automotive future.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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