Lancaster, PA, United States of America

William J Stewart

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Armstrong World Industries, Inc.. Active years: 1989-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: William J Stewart. Retrieved from https://idiyas.com/inventor/william-j-stewart-xtur92dx

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

USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1


Company Filing History:


Years Active: 1989-1991

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2 patents (USPTO):Explore Patents

Title: The Innovations of William J. Stewart

Introduction

William J. Stewart is a notable inventor based in Lancaster, PA, who has made significant contributions to the field of thermoplastic materials. With a total of two patents to his name, Stewart's work focuses on enhancing the functionality and usability of thermoplastic surfaces.

Latest Patents

Stewart's latest patents include a non-stick coating composition and method for thermoplastic materials. This innovative solution addresses the common issue of thermoplastic materials sticking to one another during storage, particularly in hot summer months. By applying a film composed of a hydroxy alkyl sulfonate salt or an alkyl sulfonate salt, along with an alkyl sulfate salt, the sticking can be significantly reduced or completely prevented. This advancement not only improves the handling of thermoplastic materials but also enhances their overall performance.

Career Highlights

William J. Stewart is currently employed at Armstrong World Industries, Inc., where he continues to develop and refine his innovative ideas. His work has had a lasting impact on the industry, showcasing his commitment to improving material properties and usability.

Collaborations

Stewart has collaborated with notable coworkers such as James B. Krug and Ronald S. Lenox, contributing to a dynamic work environment that fosters innovation and creativity.

Conclusion

William J. Stewart's contributions to the field of thermoplastic materials through his patents demonstrate his dedication to innovation. His work not only addresses practical challenges but also paves the way for future advancements in material science.

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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