Ebina, Japan

Yasushi Iwazaki

This inventor holds 66 USPTO granted patents and 10 published patent applications and 23 EPO patents, primarily in Internal Combustion Engines (CPC class F01N). Top assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation. Active years: 2004-2021.

USPTO Granted Patents = 66 

% Patents Active = 36.4

 

Average Co-Inventor Count = 3.3

ph-index = 11

Forward Citations = 303(Granted Patents)

Forward Citations (Not Self Cited) = 270(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Susono, JP (2004 - 2014)
  • Edina, JP (2019)
  • Ebina, JP (2008 - 2021)

Company Filing History:


Years Active: 2004-2021

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Areas of Expertise:
Exhaust Gas Purification
Air-Fuel Ratio Diagnosis
NOx Sensor
Internal Combustion Engine
Control System
Fuel Injection Control
Deterioration Diagnosis
Abnormality Detection
Diagnostic Apparatus
Multicylinder Engine
Oil Dilution Rate
Catalyst Technology
66 patents (USPTO):Explore Patents

Title: **Yasushi Iwazaki: Innovator in Exhaust Gas Purification Technologies**

Introduction

Yasushi Iwazaki, based in Ebina, Japan, is a notable inventor recognized for his significant contributions to the field of automotive technology. With a remarkable portfolio comprising 66 patents, he has dedicated his career to enhancing vehicle performance and environmental efficiency.

Latest Patents

Iwazaki's latest patents showcase his innovative approaches to exhaust gas treatment systems. One of his key inventions is an **Exhaust Gas Purification Apparatus for an Internal Combustion Engine**. This apparatus comprises a filter that supports a catalyst with oxygen storage capacity, an air-fuel ratio sensor to monitor exhaust gas, and a controller that adjusts the air-fuel ratio for optimal performance. This system estimates particulate matter accumulation within the filter's partition wall and accurately assesses the maximum oxygen storage capacity of the catalyst, ultimately improving emission control.

Another significant invention by Iwazaki is the **Abnormality Diagnosis System of Air-Fuel Ratio Sensor**. This system effectively determines anomalies in air-fuel ratio sensors by calculating currents based on various blowby gas flow ratios. By monitoring these ratios during fuel cut control, the system enhances engine performance diagnostics, ensuring more efficient fuel management.

Career Highlights

Throughout his career, Iwazaki has made substantial contributions while working at prestigious companies such as Toyota Motor Corporation and Denso Corporation. His experience in these organizations has allowed him to lead innovative projects that directly impact the automotive industry.

Collaborations

Iwazaki has collaborated with fellow inventors like Hiroshi Miyamoto and Toru Kidokoro, demonstrating the importance of teamwork in his inventive process. Together, they have worked on various projects aimed at improving vehicle technology, particularly in emissions control and efficiency.

Conclusion

Yasushi Iwazaki stands out as a pioneer in his field, with a commendable track record of patents that address critical automotive challenges. His commitment to innovation and collaboration with industry peers continues to contribute to advancements in engine performance and environmental sustainability.

Profile summary based on public USPTO records.
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