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For the Inventor, By the Inventor

Chatou, France

Pierre Semence

This inventor holds 5 USPTO granted patents. Top assignees: Solex, Magneti Marelli France. Active years: 1994-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Pierre Semence. Retrieved from https://idiyas.com/inventor/pierre-semence

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

Calculating rank
USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 4

Forward Citations = 88(Granted Patents)


Location History:

  • Chatou, FR (1994 - 1996)
  • Verneuil sur Seine, FR (2000)

Company Filing History:

goldMedal3 out of 14 
 
Solex
 patents
silverMedal2 out of 27 
 
Magneti Marelli France
 patents

Years Active: 1994-2000

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5 patents (USPTO):Explore Patents
1. 6047950 - Throttle valve body with a tapered channel on one side of its axis and a (2000-04-11),
2. 5497746 - Two-stage valve for feeding air to injectors of an internal combustion (1996-03-12),
3. 5374031 - Butterfly-valve assembly having an admission passage of (1994-12-20),
4. 5357931 - Supply device with built-in pipework (1994-10-25),
5. 5275375 - Rotary throttle member and a throttle body for an internal combustion (1994-01-04),

Title: Innovations of Pierre Semence

Introduction

Pierre Semence is a notable inventor based in Chatou, France. He has made significant contributions to the field of engineering, particularly in the development of advanced valve systems. With a total of five patents to his name, Semence has demonstrated a commitment to innovation and technological advancement.

Latest Patents

Among his latest patents, Semence has developed a throttle valve body with a tapered channel on one side of its axis. He has also created a two-stage valve for feeding air to injectors of an internal combustion engine. This innovative design features a piston within the body of the valve that is connected to an actuator and is integral with stops. After a first stroke of the piston from its position against the first seat, the first stops entrain second stops integral with a second piston. This mechanism allows for the regulation of airflow through each of the two outlets in succession, enhancing the efficiency of air-assisted injectors.

Career Highlights

Throughout his career, Semence has worked with prominent companies such as Solex and Magneti Marelli France. His experience in these organizations has contributed to his expertise in valve technology and automotive engineering.

Collaborations

Semence has collaborated with notable individuals in his field, including Michael Pontoppidan and Jean-Pierre Joigneau. These partnerships have further enriched his work and innovations.

Conclusion

Pierre Semence's contributions to valve technology and his innovative patents highlight his role as a significant figure in engineering. His work continues to influence advancements in the automotive industry.

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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