Tokyo, Japan

Yoshio Hirai

This inventor holds 13 USPTO granted patents and 7 EPO patents. Top assignees: Daio Paper Corporation, New Oji Paper Co, Ltd., Seiko Instruments & Electronics Ltd.. Active years: 1990-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshio Hirai. Retrieved from https://idiyas.com/inventor/yoshio-hirai

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


% Patents Active = 30.8

 

Average Co-Inventor Count = 1.8

ph-index = 4

Forward Citations = 187(Granted Patents)


Company Filing History:


Years Active: 1990-2020

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13 patents (USPTO):Explore Patents

Title: Innovations by Yoshio Hirai

Introduction

Yoshio Hirai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of absorbent articles, holding a total of 13 patents. His work focuses on enhancing the functionality and comfort of absorbent products.

Latest Patents

Hirai's latest patents include an "Absorbent article with liquid impermeable surface sheet portion." This invention features a leak preventer sheet form and an absorber capable of absorbing bodily fluid. The design includes a surface sheet that covers part of the absorber's upper surface, which contains a liquid impermeable area. Additionally, the absorbent article incorporates right and left floating leg gathers that connect to the head part, ensuring effective fluid management. Another significant patent is the "Absorbent article and production method thereof," which describes an absorber article with a body-contact part that includes a canal member designed for optimal fit and comfort. This invention also features a leakage prevention body and an absorber positioned above it, facilitating the transport of bodily fluids.

Career Highlights

Throughout his career, Yoshio Hirai has worked with prominent companies such as Daio Paper Corporation and New Oji Paper Co., Ltd. His experience in these organizations has allowed him to develop innovative solutions in the absorbent product industry.

Collaborations

Hirai has collaborated with notable coworkers, including Migaku Suzuki and Miyuki Saisaka. Their combined expertise has contributed to the advancement of absorbent technology.

Conclusion

Yoshio Hirai's contributions to the field of absorbent articles demonstrate his commitment to innovation and improvement. His patents reflect a deep understanding of user needs and product functionality.

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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