Toyota, Japan

Takahiko Hasegawa

This inventor holds 31 USPTO granted patents, plus 2 CIPO patents, primarily in Fuel Cell Technology. Top assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Electric Corporation, Yokohama National University. Active years: 2009-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takahiko Hasegawa. Retrieved from https://idiyas.com/inventor/takahiko-hasegawa

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

Calculating rank

% Patents Active = 90.3


Average Co-Inventor Count = 2.4

ph-index = 3

Forward Citations = 40(Granted Patents)


Location History:

  • Toyota-shi, JP (2019)
  • Toyota, JP (2009 - 2022)

Company Filing History:


Years Active: 2009-2025

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Areas of Expertise:
Hydrogen Gas Supply
Fuel Cell Vehicle
DC/DC Converter
Power Supply System
Converter Controller
Soft Switching
Voltage Conversion
Impedance Measurement
Chopper Circuit
Multi-Phase Converter
Current Blocking Circuit
Service Management
31 patents (USPTO):Explore Patents

Title: Takahiko Hasegawa: Innovator in Hydrogen Systems

Introduction: Takahiko Hasegawa is a distinguished inventor based in Toyota, Japan, with an impressive portfolio of 31 patents to his name. His work focuses on cutting-edge technologies, particularly in hydrogen supply systems and fuel cell vehicles, contributing significantly to advancements in sustainable energy solutions.

Latest Patents: Among his latest innovations, Hasegawa has developed a Hydrogen Gas Supply System, which includes a storing unit for hydrogen, a communication unit that processes environmental burden and quality information, a user interface for information dissemination, and a controller for managing hydrogen supply based on received data. Additionally, he has worked on a Fuel Cell Vehicle that effectively manages produced water from power generation, entails a drainage valve for water management, and utilizes road information to optimize vehicle operation.

Career Highlights: Hasegawa's career spans significant roles in prominent companies, including Toyota Motor Corporation and Mitsubishi Electric Corporation. His expertise in hydrogen technology and vehicle performance has positioned him as a key player in the advancement of fuel-efficient vehicle systems.

Collaborations: Throughout his career, Takahiko Hasegawa has collaborated with talented professionals in the industry, including notable coworkers Kota Manabe and Nobuyuki Kitamura. These collaborations have undoubtedly enhanced the innovation and development of the projects he has been involved in.

Conclusion: Takahiko Hasegawa's contributions to the fields of hydrogen technology and fuel cell vehicles mark him as a leading inventor of our time. With a strong foundation of patents and meaningful collaborations, his work continues to push the boundaries of innovation and sustainability in the automotive industry.

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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