Osaka, Japan

Kazuki Hirai

This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Yanmar Power Technology Co., Inc.. Active years: 2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuki Hirai. Retrieved from https://idiyas.com/inventor/kazuki-hirai-d2mszwj1

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

Calculating rank

% Patents Active = 100.0


Average Co-Inventor Count = 8.0

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:


Years Active: 2021

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1 patent (USPTO):Explore Patents

Title: Innovations of Kazuki Hirai: A Pioneer in Exhaust Gas Purification

Introduction: Kazuki Hirai, an inventive mind hailing from Osaka, Japan, has made noteworthy contributions to the field of exhaust gas purification. As an employee of Yanmar Power Technology Co., Inc., he holds a significant patent that addresses environmental concerns in automotive technology.

Latest Patents: Kazuki Hirai's sole patent is an innovative exhaust gas purifier designed to enhance the efficiency of reducing harmful emissions. The patent describes a system that includes a casing with SCR catalysts, specifically a first and a second SCR catalyst. A first and a second backflow prevention plate are incorporated within the casing, which features both a catalyst passage and a bypass passage. The configuration allows the SCR catalysts to effectively reduce nitrogen oxides (NOx) found in exhaust gases, ensuring compliance with stringent environmental standards.

Career Highlights: In his role at Yanmar Power Technology Co., Inc., Kazuki has demonstrated an exceptional commitment to advancing technologies that mitigate the impact of exhaust emissions. His work not only reflects technical prowess but also aligns with global efforts to enhance air quality through innovative engineering solutions.

Collaborations: Throughout his career, Kazuki has collaborated with talented colleagues such as Ryota Kobayashi and Shunji Hamaoka. Together, they strive to create efficient technologies that resonate within the automotive industry and beyond, fostering teamwork and innovation.

Conclusion: Kazuki Hirai's contributions to exhaust gas purification signify a crucial step towards sustainable automotive practices. His patent exemplifies the importance of innovation in addressing environmental challenges, and his collaborations with fellow professionals highlight the collective effort needed to drive change in this vital area. As the world continues to prioritize cleaner technologies, inventors like Kazuki Hirai remain at the forefront of this transformation.

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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