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For the Inventor, By the Inventor

Aulnoye, France

Bernard A Plaquin

This inventor holds 7 USPTO granted patents. Top assignee: Vallourec. Active years: 1984-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Bernard A Plaquin. Retrieved from https://idiyas.com/inventor/bernard-a-plaquin

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 5

Forward Citations = 132(Granted Patents)


Location History:

  • Aulnoy, FR (1986)
  • Aulnoye Aymeries, FR (1984 - 1989)
  • Aulnoye, FR (1987 - 1989)

Company Filing History:

goldMedal7 out of 34 
 
Vallourec
 patents

Years Active: 1984-1989

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7 patents (USPTO):Explore Patents
1. 4828295 - Steel tube threaded joint having an impervious device at the level of (1989-05-09),
2. 4828294 - Threaded joint for steel pipes containing a sealing device located at (1989-05-09),
3. 4665780 - Method of machining threaded pipe-ends (1987-05-19),
4. 4641410 - Method and apparatus for making a joint for steel tubes (1987-02-10),
5. 4614120 - Determination of the make-up torque for pipe joints (1986-09-30),
6. 4515020 - Method and apparatus for ensuring correct thread make-up of a pipejoint (1985-05-07),
7. 4426105 - Joints for pipes, particularly intended for the oil industry (1984-01-17),

Title: The Innovative Contributions of Bernard A. Plaquin

Introduction

Bernard A. Plaquin, hailing from Aulnoye, France, is a prominent inventor known for his significant contributions to the field of engineering, particularly in the petroleum industry. With a total of seven patents to his name, Plaquin's work has had a lasting impact on the design and functionality of steel pipes used in demanding industrial applications.

Latest Patents

Plaquin's most recent innovation is a threaded joint for steel pipes that incorporates a sealing device. This invention is particularly useful in the petroleum industry, where reliability and safety are paramount. The unique design of the steel tube threaded joint involves male and female elements that are combined through threading, ensuring a robust connection. Notably, a first element of the joint features a composite structure with a synthetic material lining that perfectly fits the clearance of the threaded connection. This innovation enhances the integrity of the joint, maintaining its effectiveness under high-pressure conditions.

Career Highlights

Throughout his career, Bernard A. Plaquin has worked diligently at Vallourec, a company renowned for its advanced steel pipe solutions. His expertise and innovative mindset have driven the development of cutting-edge technologies in the industry. Plaquin's contributions, particularly in the realm of threaded joints, showcase his commitment to solving complex engineering challenges.

Collaborations

In his role at Vallourec, Plaquin has collaborated with esteemed colleagues such as Paul Bounie and Louis Fradin. These partnerships have fostered a creative environment where innovative ideas can thrive, ultimately leading to advances in the design and application of steel piping systems.

Conclusion

With seven patents to his name and a dedicated career at Vallourec, Bernard A. Plaquin exemplifies the spirit of innovation in engineering. His latest inventions not only advance the technology within the petroleum industry but also set new standards for safety and efficiency in steel pipe applications. As he continues to explore new frontiers in engineering, Plaquin remains a key figure in the landscape of industrial 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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