Aichi, Japan

Hirofumi Onishi

This inventor holds 24 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Automatic Transmission Technology. Top assignees: Toyota Jidosha Kabushiki Kaisha, Nitto Kohki Co., Ltd., Aisin Kako Kabushiki Kaisha. Active years: 2005-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirofumi Onishi. Retrieved from https://idiyas.com/inventor/hirofumi-onishi

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

USPTO Granted Patents = 24 

% Patents Active = 45.8


Average Co-Inventor Count = 3.1

ph-index = 3

Forward Citations = 37(Granted Patents)


Location History:

  • Aichi-ken, JP (2019)
  • Toyota, JP (2017 - 2021)
  • Aichi-gun, JP (2005 - 2022)

Company Filing History:


Years Active: 2005-2022

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Areas of Expertise:
Fuel Cell System
Check Valve
Coupling Member
Automatic Transmission
Frictional Engagement
Clutch Device
Piston
Control Apparatus
Lubricating Structure
Dual Connecting Device
Tandem Engagement Device
Multi-Plate Friction
24 patents (USPTO):Explore Patents

Title: Hirofumi Onishi: A Pioneer in Fuel Cell Technology

Introduction

Hirofumi Onishi is an innovative inventor based in Aichi-gun, Japan, known for his extensive work in the field of fuel cell systems. With a remarkable portfolio of 24 patents, Onishi continues to contribute significantly to the advancement of technology.

Latest Patents

Onishi's latest patents include groundbreaking innovations such as a flow passage structure of a fuel cell system. This invention features a complex assembly comprised of a hydrogen gas pipe, a hydrogen off-gas pipe, a supply pipe, and multiple junctions, designed to enhance the functionality and efficiency of fuel cells. Another notable patent he holds is for a male coupling member, which allows for easy detachment and attachment to a female coupling member while incorporating a filtration system. This design is crucial for ensuring optimal operation in various applications.

Career Highlights

Throughout his career, Hirofumi Onishi has made significant contributions while working for notable companies including Toyota Motor Corporation and Nitto Kohki Co., Ltd. His experience in these reputable organizations has equipped him with the knowledge and skills necessary to excel in the innovative field of fuel cell technology.

Collaborations

Onishi has collaborated with esteemed colleagues such as Yuji Yasuda and Takuya Nishio. Their joint efforts have paved the way for significant advancements in fuel cell systems and related technologies, highlighting the importance of teamwork in the innovation process.

Conclusion

Hirofumi Onishi stands out as a key figure in the world of patents and innovations, particularly in fuel cell technology. His continued dedication to research and development, along with his collaborations, contributes to the ongoing evolution of energy solutions, showcasing the essential role inventors play in shaping the 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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