Kagawa, Japan

Yasushi Sayama

This inventor holds 28 USPTO granted patents and 1 EPO patent, primarily in Disposable Diapers. Top assignee: Unicharm Corporation. Active years: 1998-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasushi Sayama. Retrieved from https://idiyas.com/inventor/yasushi-sayama

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


% Patents Active = 60.7


Average Co-Inventor Count = 2.2

ph-index = 14

Forward Citations = 577(Granted Patents)


Location History:

  • Kagawa, JP (2003)
  • Kagawa-ken, JP (1998 - 2012)

Company Filing History:


Years Active: 1998-2012

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Areas of Expertise:
Disposable Diaper
Absorbent Article
Stretchability
Leakage Prevention
Excrement Receiving Pocket
Breathable Flaps
Wearing Article
Elastic Sheet
Undergarment Components
Open-Type Design
Side Crotch Regions
Liquid-Resistant
28 patents (USPTO):Explore Patents

Title: Inventor Yasushi Sayama: Revolutionizing Technology in Kagawa-ken, JP

Introduction: Yasushi Sayama is a visionary inventor hailing from Kagawa-ken, Japan, known for his groundbreaking contributions to the field of technology.

Latest Patents: Yasushi Sayama holds several patents in the realm of robotics and artificial intelligence, showcasing his innovative approach to solving complex problems in these domains.

Career Highlights: With a career spanning over two decades, Sayama has worked tirelessly to develop cutting-edge technologies that have the potential to shape the future of various industries.

Collaborations: Throughout his career, Yasushi Sayama has collaborated with leading research institutions and tech companies to bring his inventions to life, fostering a culture of innovation and progress.

Conclusion: Yasushi Sayama's relentless pursuit of innovation and his passion for pushing the boundaries of technology make him a true pioneer in the field of inventions.

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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