Houston, TX, United States of America

Leonard S Landriault

This inventor holds 1 USPTO granted patent. Top assignee: Hydril Company. Active years: 1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Leonard S Landriault. Retrieved from https://idiyas.com/inventor/leonard-s-landriault

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 = 3.0

ph-index = 1

Forward Citations = 148(Granted Patents)


Company Filing History:


Years Active: 1983

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1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of Leonard S. Landriault

Introduction

Leonard S. Landriault is a notable inventor based in Houston, Texas. He has made significant contributions to the field of engineering, particularly in the development of threaded connectors. His innovative designs have improved the efficiency and strength of connections in tubular members.

Latest Patents

Leonard S. Landriault holds a patent for a new and improved threaded connector. This invention features one or more non-tapered threads on separate diametral steps, with at least one flank 'hooked' to achieve a tensile strength comparable to that of the tubular body. The design controls the wall thickness of the female member to enhance thread loading and allow inward radial movement with the male member, preventing 'pulling out' under axial tensile loading. The outer thread step on the male member may only partially engage the threads on the female member, minimizing the critical reduction of the tube wall thickness at the thread roots. This results in a threaded connection that boasts a tensile efficiency exceeding the tube body yield strength and approaching the ultimate tensile strength of the tube body.

Career Highlights

Leonard S. Landriault is associated with Hydril Company, where he has applied his expertise in engineering and innovation. His work has contributed to advancements in the field, particularly in the design and functionality of threaded connectors.

Collaborations

Leonard has collaborated with notable colleagues, including Charles A. Bollfrass and Patrick E. McDonald. Their combined efforts have furthered the development of innovative solutions in their field.

Conclusion

Leonard S. Landriault's contributions to the engineering sector, particularly through his patented threaded connector, demonstrate his commitment to innovation and excellence. His work continues to influence the industry and improve the performance of tubular connections.

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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