Toyota, Japan

Yoshiaki Naganuma

This inventor holds 52 USPTO granted patents, plus 12 CIPO patents and 6 EPO patents, primarily in Fuel Cell Technology. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2011-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiaki Naganuma. Retrieved from https://idiyas.com/inventor/yoshiaki-naganuma

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


% Patents Active = 78.8


 

Average Co-Inventor Count = 2.5

ph-index = 3

Forward Citations = 62(Granted Patents)

Forward Citations (Not Self Cited) = 61(Dec 10, 2025)


Location History:

  • Nisshin, JP (2011 - 2014)
  • Nissin, JP (2011 - 2016)
  • Toyota, JP (2012 - 2021)

Company Filing History:


Years Active: 2011-2025

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Areas of Expertise:
Fuel Cell System
Operation Control
Fluid Discharge
Water Drainage
Vehicle Integration
Gas Pump Control
Humidity States
Cooling Medium
Emergency Stop
Residual Water Scavenging
Voltage Estimation
Circulation System
52 patents (USPTO):Explore Patents

Title: **Innovative Contributions of Yoshiaki Naganuma at Toyota**

Introduction

Yoshiaki Naganuma, based in Toyota, Japan, is a prolific inventor with an impressive portfolio of 51 patents. His work primarily focuses on automotive innovations that enhance vehicle performance and safety. Naganuma is associated with Toyota Jidosha Kabushiki Kaisha, a global leader in the automotive industry.

Latest Patents

Among Naganuma's latest contributions to the field are two key patents related to vehicle fuel inlets. The first is titled "Attachment for Fuel Inlet of Vehicle," which features a unique design that includes a fuel tank, a first fuel inlet, and a second fuel inlet—where the inner diameter of the second inlet is smaller than that of the first. This innovative design aims to improve fuel efficiency and optimize the vehicle's performance during refueling. Another patent is similarly titled "Vehicle Comprising Fuel Inlet," reiterating the importance of this innovation in modern vehicles.

Career Highlights

Throughout his career at Toyota, Naganuma has made significant strides in the automotive technology sector. His extensive research and development efforts have led to advancements that not only enhance the user experience but also align with global standards for environmental sustainability.

Collaborations

Naganuma collaborates with talented professionals, including his colleagues Tomohiro Ogawa and Masashi Toida. Together, they contribute to Toyota's mission of leading automotive innovation through teamwork and shared expertise. Their collective efforts play a vital role in driving the future of mobility.

Conclusion

Yoshiaki Naganuma's dedication to innovation and his impressive patent portfolio demonstrate his commitment to advancing automotive technology. As a key member of Toyota, he continues to push the boundaries of what is possible in the automotive industry, ensuring that Toyota remains at the forefront of innovation and technological excellence.

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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