Tokyo, Japan

Yasuhiro Tsumura

This inventor holds 4 USPTO granted patents, plus 1 CIPO patent and 5 EPO patents. Top assignees: Nippon Steel & Sumikin Materials Co., Ltd., Nippon Steel Chemical & Material Co., Ltd.. Active years: 2018-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhiro Tsumura. Retrieved from https://idiyas.com/inventor/yasuhiro-tsumura

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 = 5.3

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2018-2019

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4 patents (USPTO):Explore Patents

Title: Yasuhiro Tsumura: Innovator in Catalytic Converter Technology

Introduction

Yasuhiro Tsumura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of catalytic converter technology, holding a total of 4 patents. His innovative designs focus on improving exhaust gas purification systems, which are crucial for reducing environmental pollution.

Latest Patents

Tsumura's latest patents include advancements in metal substrates for catalytic converters and catalyst carriers. One notable patent describes a base for supporting a catalyst that features a honeycomb structure made from superposed metallic flat and wavy foils. This design includes offset portions in the wavy foil, enhancing the efficiency of exhaust gas purification. Another patent outlines a metal substrate that incorporates a honeycomb core with stacked metal flat and corrugated foils, along with a precisely formulated oxide film. This oxide film is designed to optimize the catalytic process, containing specific percentages of alumina and iron oxides.

Career Highlights

Throughout his career, Tsumura has worked with leading companies in the materials and chemical sectors. He has been associated with Nippon Steel & Sumikin Materials Co., Ltd. and Nippon Steel Chemical & Material Co., Ltd. His work has significantly impacted the development of materials used in catalytic converters, contributing to cleaner automotive technologies.

Collaborations

Tsumura has collaborated with notable colleagues in his field, including Tooru Inaguma and Shogo Konya. These partnerships have fostered innovation and advancements in catalytic converter technology.

Conclusion

Yasuhiro Tsumura's contributions to catalytic converter technology exemplify his commitment to innovation and environmental sustainability. His patents reflect a deep understanding of materials science and engineering, positioning him as a key figure in the 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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