Hallsville, TX, United States of America

Henry H Leggett

This inventor holds 5 USPTO granted patents. Top assignees: Eastern Oil Tools Pte Ltd, Hydrolex, Inc., Schlumberger Technology Corporation. Active years: 1990-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Henry H Leggett. Retrieved from https://idiyas.com/inventor/henry-h-leggett

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 71(Granted Patents)


Location History:

  • Longview, TX (US) (1990)
  • Hallsville, TX (US) (1994 - 2002)

Company Filing History:


Years Active: 1990-2002

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5 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Henry H. Leggett

Introduction

Henry H. Leggett is a renowned inventor based in Hallsville, Texas, with a total of five patents to his name. He has significantly contributed to the field of blowout preventer systems through his innovative designs and mechanisms. His work is notable for its practical applications in the oil and gas industry, reflecting a deep understanding of engineering requirements and safety measures.

Latest Patents

Leggett’s recent patents showcase his ingenuity in creating effective solutions for blowout preventers. His first notable patent is the "One-piece ram element block for wireline blowout preventers." This invention features a ram seal unit that incorporates an integral ram seal block with a central web and parallel rectangular elastomer support plates. These elastomer plates define outer face surfaces that engage intimately with the internal wall surfaces of ram seal receptacles, ensuring reliable sealing contact during operation.

Another significant invention by Leggett is the "By-pass stud with integral safety valve." This innovative valve-controlled mechanism allows for effective bleeding of pressurized fluid. The stud body features a vent passage and an internal valve seat, enabling smooth operation between closed and open positions. This mechanism enhances safety and efficiency, making it particularly useful with manifold-type bleed valves in various systems.

Career Highlights

Throughout his career, Leggett has worked for renowned companies, including Eastern Oil Tools Pte Ltd and Tuboscope I/P, Inc. His experience in these organizations has equipped him with valuable industry insights, fostering his capabilities as an inventor. His dedication to innovation in the field of oil drilling and safety measures has marked him as a significant figure in his profession.

Collaborations

Henry H. Leggett has collaborated with notable coworkers such as Lionel M. Gingras and Russell C. Gilleylen. These partnerships have facilitated knowledge exchange and fostered a collaborative spirit essential for innovation in tough engineering challenges. Working alongside experienced professionals has further enhanced Leggett's contributions to the industry.

Conclusion

Henry H. Leggett's innovations and inventions have made a lasting impact on blowout preventer technology and the oil and gas industry. With five patents to his name, he exemplifies the spirit of creativity and engineering excellence. His work continues to influence safety protocols and operational efficiency in the field, marking him as a distinguished inventor whose contributions shape the future of engineering solutions.

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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