Fukuoka, Japan

Shigeyuki Yamada

This inventor holds 1 USPTO granted patent. Top assignee: Toto Ltd.. Active years: 2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeyuki Yamada. Retrieved from https://idiyas.com/inventor/shigeyuki-yamada-eet0k209

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 = 9.0

ph-index = 1

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 2002

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1 patent (USPTO):Explore Patents

Title: The Contributions of Shigeyuki Yamada in Sanitary Ware Innovations

Introduction: Shigeyuki Yamada is a notable inventor based in Fukuoka, Japan, known for his innovative contributions to the field of sanitary ware. With a commitment to improving everyday products, he has developed inventions that enhance hygiene and ease of maintenance.

Latest Patents: Shigeyuki Yamada holds a patent for a unique approach to sanitary ware, focusing on materials that resist dirt adhesion. His patent, titled "Sanitary ware and process for producing same," describes a product designed to withstand the challenges of cleanliness. This sanitary ware features a first coloring glaze layer on a ceramic body, a second transparent glaze layer on top, and an engobe layer positioned between the body surface and the first glaze layer. This innovative design allows for easy cleaning with a weak flow of water, ensuring long-term durability against dirt accumulation.

Career Highlights: Throughout his career, Shigeyuki Yamada has collaborated with the prominent company Toto Ltd., which is renowned for its quality bathroom fixtures and products. His position at Toto Ltd. has allowed him to push the boundaries of design and functionality in sanitary ware. By focusing on user-friendly and technologically superior products, he has contributed significantly to the company’s reputation in the industry.

Collaborations: In his journey toward innovation, Shigeyuki Yamada has worked alongside colleagues such as Yutaka Tomioka and Satoshi Horiuchi. Together, they share a vision of advancing technology and functionality in sanitary ware, leading to products that meet the evolving needs of consumers.

Conclusion: Shigeyuki Yamada's work in sanitary ware exemplifies the spirit of innovation within the realm of personal hygiene products. His patent not only addresses the practical issues of cleaning but also reflects a broader trend toward sustainable and customer-friendly design. As a dedicated inventor at Toto Ltd., he continues to influence the industry with his groundbreaking ideas and collaborative efforts.

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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