Aichi, Japan

Hirofumi Shinjoh

This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha Cataler Industrial Co. Ltd. Active years: 1989-2004.

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

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


% Patents Active = 66.7


Average Co-Inventor Count = 4.7

ph-index = 2

Forward Citations = 46(Granted Patents)


Company Filing History:


Years Active: 1989-2004

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3 patents (USPTO):Explore Patents

Title: Hirofumi Shinjoh: Innovator in Catalytic Technology

Introduction

Hirofumi Shinjoh is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of catalytic technology, holding a total of 3 patents. His work focuses on developing catalysts that improve the purification of exhaust gases, which is crucial for reducing environmental pollution.

Latest Patents

One of his latest patents is a molten-salt type catalyst designed for purifying particulate materials found in exhaust gases emitted from internal combustion engines. This innovative catalyst includes a solid support and a catalytic ingredient, which consists of components such as silver nitrate and various metal nitrates. The molten-type catalyst is capable of efficiently burning and removing particulate materials even at low temperatures.

Another significant patent is a catalyst for the purification of exhaust gases. This catalyst features a support substrate with an active alumina coating layer that includes nickel oxide and cobalt oxide. Additionally, it incorporates a composite oxide of cerium and zirconium oxides, along with noble metal catalyst ingredients like platinum, palladium, and rhodium. This advanced catalyst demonstrates reduced hydrogen sulfide emissions and improved conversion ratios for hydrocarbons, carbon monoxide, and nitrogen oxides compared to conventional catalysts.

Career Highlights

Hirofumi Shinjoh has worked with prominent companies in the automotive industry, including Toyota Central R&D Labs and Toyota Motor Corporation. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in vehicle emissions technology.

Collaborations

Throughout his career, Shinjoh has collaborated with talented individuals such as Shinichi Matsumoto and Naoto Miyoshi. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in catalytic systems.

Conclusion

Hirofumi Shinjoh's contributions to catalytic technology are significant and impactful. His innovative patents and collaborations highlight his dedication to improving environmental standards through advanced engineering solutions. His work continues to influence the automotive industry and the pursuit of cleaner technologies.

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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