Kagawa, Japan

Toshifumi Ohtsubo

This inventor holds 6 USPTO granted patents and 6 EPO patents. Top assignee: Unicharm Corporation. Active years: 1997-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshifumi Ohtsubo. Retrieved from https://idiyas.com/inventor/toshifumi-ohtsubo

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 = 1.5

ph-index = 3

Forward Citations = 92(Granted Patents)


Location History:

  • Kawanoe, JP (1997 - 1999)
  • Kagawa, JP (2021 - 2023)

Company Filing History:


Years Active: 1997-2025

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6 patents (USPTO):Explore Patents

Title: Innovations by Toshifumi Ohtsubo

Introduction

Toshifumi Ohtsubo is a notable inventor based in Kagawa, Japan. He has made significant contributions to the field of absorbent articles and elastic materials. With a total of 6 patents to his name, Ohtsubo's work has had a considerable impact on product design and functionality.

Latest Patents

Ohtsubo's latest patents include an elastic sheet and an underpants-type absorbent article. The elastic sheet features a unique design that includes a first sheet and a second sheet joined by welded portions. An elastic member is positioned between these sheets, allowing it to stretch and contract in a continuous direction. The welded portions are strategically placed on both sides of the elastic member, ensuring its stability. Additionally, his patent for the absorbent article outlines a method for manufacturing that involves a first sheet body with elastic strings and a second sheet body, which are welded together to create a functional product.

Career Highlights

Ohtsubo is currently associated with Unicharm Corporation, a leading company in the hygiene and personal care industry. His innovative designs and methods have contributed to the advancement of absorbent products, enhancing their usability and comfort.

Collaborations

Throughout his career, Ohtsubo has collaborated with notable colleagues such as Tohru Sasaki and Hironori Nomura. These partnerships have fostered a creative environment that encourages the development of groundbreaking inventions.

Conclusion

Toshifumi Ohtsubo's contributions to the field of elastic materials and absorbent articles demonstrate his innovative spirit and dedication to improving everyday products. His patents reflect a commitment to enhancing functionality and user experience 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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