Okazaki, Japan

Hiromitsu Ando

This inventor holds 24 USPTO granted patents and 1 EPO patent, primarily in Internal Combustion Engines. Top assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Jidosha Kogyo K.k.. Active years: 1990-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromitsu Ando. Retrieved from https://idiyas.com/inventor/hiromitsu-ando

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


% Patents Active = 100.0


Average Co-Inventor Count = 5.5

ph-index = 13

Forward Citations = 480(Granted Patents)


Location History:

  • Tokyo, JP (1997 - 2001)
  • Aichi, JP (1992 - 2003)
  • Okazaki, JP (1990 - 2006)

Company Filing History:


Years Active: 1990-2006

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Areas of Expertise:
Exhaust Gas Purification
Direct Injection
Ignition Timing
In-Cylinder Injection
Stratified Combustion
Spark Ignition
Combustion Control
Engine Control
Exhaust Heating
Piston Design
Intake Port Structure
24 patents (USPTO):Explore Patents

Title: Innovations in Exhaust Gas Purification: The Work of Hiromitsu Ando

Introduction: Hiromitsu Ando, based in Okazaki, Japan, is a prolific inventor with a remarkable portfolio of 24 patents. His work significantly contributes to advancements in internal combustion engine technology, particularly regarding exhaust gas purification.

Latest Patents: Among his notable inventions are two groundbreaking patents. The first is an "Exhaust Gas Purifying Apparatus of Internal Combustion Engine," which introduces a system for adsorbing nitrogen oxides (NO) when the exhaust gas is lean. This apparatus is designed to release or reduce the adsorbed NO when there is a decrease in oxygen concentration in the exhaust. Furthermore, it incorporates a light-off catalyst upstream that ensures effective purification while maintaining reduced emissions.

The second patent is related to a "Cylinder Injection Type Internal Combustion Engine." This innovation involves a method where, upon an increase in temperature demand for an exhaust-gas purifying catalyst, the engine's electronic control unit achieves stratified combustion. This method allows for efficient fuel usage while maintaining optimal catalyst temperature, showcasing Ando's commitment to enhancing engine performance without increasing fuel consumption.

Career Highlights: Ando has a distinguished career, having worked for notable companies such as Mitsubishi Motors Corporation. His innovations have played an essential role in leading the automotive industry towards more eco-friendly technologies and strategies.

Collaborations: Throughout his career, Ando has collaborated with esteemed colleagues like Jun Takemura and Shigeo Yamamoto. These collaborations have fostered a creative environment where innovative solutions can thrive, further enhancing the impact of their work on the industry.

Conclusion: Hiromitsu Ando's contributions to the field of internal combustion engines highlight the importance of innovation in combating environmental challenges. His patents not only showcase his expertise and forward-thinking approach but also reflect the ongoing evolution of engine technology towards sustainability.

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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