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For the Inventor, By the Inventor

Aichi, Japan

Hisaya Fujioka

This inventor holds 6 USPTO granted patents. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2019-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisaya Fujioka. Retrieved from https://idiyas.com/inventor/hisaya-fujioka

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

USPTO Granted Patents = 6

% Patents Active = 83.3

Average Co-Inventor Count = 1.8

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal6 out of 38,970 
 
Toyota Jidosha Kabushiki Kaisha
 patents

Years Active: 2019-2026

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6 patents (USPTO):Explore Patents
1. 12736188 - Fuel gas storage system (2026-09-15),
2. 12278406 - Fuel cell system (2025-04-14),
3. 12224464 - Fuel cell system (2025-02-11),
4. 12100871 - Fuel cell system (2024-09-24),
5. 10720658 - Fuel cell vehicle (2020-07-21),
6. 10476090 - Fuel cell system (2019-11-12),

Title: Hisaya Fujioka: Innovator in Fuel Cell Technology

Introduction

Hisaya Fujioka is a prominent inventor based in Aichi, Japan. He has made significant contributions to the field of fuel cell technology, holding a total of 6 patents. His work focuses on enhancing the efficiency and functionality of fuel cell systems, which are crucial for sustainable energy solutions.

Latest Patents

Hisaya Fujioka's latest patents include innovative designs for fuel cell systems. One notable patent describes a controller for a fuel cell (FC) system that can start both first and second FC stacks based on gas sensor measurements. The controller maintains the operation of the stacks depending on the concentration of the gas detected. Another patent outlines an FC system comprising multiple FC units, a cooler, and a controller. This system includes temperature sensors that notify users of any malfunctions, ensuring optimal performance.

Career Highlights

Fujioka is currently employed at Toyota Jidosha Kabushiki Kaisha, where he continues to develop advanced fuel cell technologies. His work at Toyota has positioned him as a key player in the automotive industry's shift towards cleaner energy solutions.

Collaborations

Hisaya Fujioka collaborates with talented colleagues such as Toshihiro Egawa and Makito Okumura. Together, they work on innovative projects that push the boundaries of fuel cell technology.

Conclusion

Hisaya Fujioka's contributions to fuel cell technology are noteworthy and impactful. His patents reflect a commitment to advancing sustainable energy solutions, making him a significant figure in the field.

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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