Tokyo, Japan

Yasuhiro Masumoto

This inventor holds 2 USPTO granted patents. Top assignee: The Sailor Pen Co., Ltd.. Active years: 1995-1996.

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

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 = 1.3

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1995-1996

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2 patents (USPTO):Explore Patents

Title: Yasuhiro Masumoto: Innovator in Applicator Technology

Introduction

Yasuhiro Masumoto is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of applicator technology, holding two patents that enhance the functionality and usability of applicators.

Latest Patents

Masumoto's latest patents include an innovative applicator design that features a cap which pressurizes and seals the inner space. This applicator allows air within the inner barrel of the cap to flow into the fluid tank, increasing the internal pressure when the cap is engaged. This design eliminates the need for users to press the fluid tank between their fingers, making it easier to apply highly viscous fluids. The cap includes a curved, elastically deformable valve-opening member that ensures a seamless flow of air, thereby maintaining the increased internal pressure. Another patent focuses on an inexpensive applicator that utilizes a cylindrical valve member made of flexible material, which also enhances the application process by retracting the application member when the cap is engaged.

Career Highlights

Yasuhiro Masumoto is currently employed at Sailor Pen Co., Ltd., where he continues to innovate in the field of writing instruments and applicators. His work has significantly improved the user experience for applying various fluids.

Collaborations

Masumoto collaborates with Isao Shimada, contributing to the development of new technologies and products within the company.

Conclusion

Yasuhiro Masumoto's inventive spirit and dedication to improving applicator technology have led to significant advancements in the field. His patents reflect a commitment to enhancing user experience and functionality in everyday products.

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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