Kyoto, Japan

Naohiro Tsumura

This inventor holds 4 USPTO granted patents. Top assignees: Gs Yuasa International Ltd., Japan Storage Battery Co., Ltd.. Active years: 2002-2012.

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

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


% Patents Active = 50.0

Average Co-Inventor Count = 4.0

ph-index = 2

Forward Citations = 33(Granted Patents)


Company Filing History:


Years Active: 2002-2012

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4 patents (USPTO):Explore Patents

Title: Naohiro Tsumura: Innovator in Non-Aqueous Electrolyte Battery Technology

Introduction

Naohiro Tsumura is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of battery technology, particularly in the development of non-aqueous electrolyte batteries. With a total of 4 patents to his name, Tsumura's work has advanced the efficiency and safety of energy storage systems.

Latest Patents

Tsumura's latest patents focus on innovative methods for manufacturing non-aqueous electrolyte batteries. One notable patent describes a non-aqueous electrolyte battery that suppresses gas generation by utilizing a negative active material that intercalates lithium ions at a potential not lower than 1.2 V relative to lithium. This design includes a non-aqueous electrolyte containing an electrolyte salt and a non-aqueous solvent, along with a positive and negative electrode. The negative electrode features a main active material that meets specific potential requirements, ensuring enhanced performance and safety. Another patent outlines a method of manufacturing such batteries, emphasizing the importance of lowering the negative electrode potential during the initial cycle to improve battery longevity and efficiency.

Career Highlights

Throughout his career, Tsumura has worked with notable companies in the battery industry, including Japan Storage Battery Co., Ltd. and GS Yuasa International Ltd. His experience in these organizations has allowed him to refine his expertise in battery technology and contribute to groundbreaking innovations.

Collaborations

Tsumura has collaborated with esteemed colleagues such as Shuji Hitomi and Suguru Kozono. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and advancements in battery technology.

Conclusion

Naohiro Tsumura's contributions to non-aqueous electrolyte battery technology have positioned him as a key figure in the field. His innovative patents and collaborative efforts continue to influence the development of safer and more efficient energy storage solutions.

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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