Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JL

Jean Leyer — 2 Patents

UNUnknown: 4 patents #4,220 of 83,584Top 6%
VFV & M France: 1 patents #3 of 17Top 20%
VFVallourec Oil And Gas France: 1 patents #75 of 144Top 55%
Valenciennes, FR: #18 of 73 inventorsTop 25%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Jean Leyer has been granted 2 US patents while listed as an inventor at Unknown. The first was granted in 2015 and the most recent in July 2016. Jean Leyer ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Jean Leyer in Valenciennes, FR.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9394594 Low alloy steel with a high yield strength and high sulphide stress cracking resistance Christoph Bosch, Axel Kulgemeyer, Michel Piette 2016-07-19
9005520 Steel compositions for special uses Daniel Petelot, Bruno Vandenberghe, Viviane Lepingle, Ghislain Louis 2015-04-14