Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Gilbert Duperray — 4 Patents

ATAtochem: 3 patents #75 of 347Top 25%
PKProduits Chimiques Uging Kuhlmann: 1 patents #44 of 118Top 40%
Lozanne, FR: #4 of 15 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
Gilbert Duperray has been granted 4 US patents while listed as an inventor at Atochem. The first was granted in 1981 and the most recent in September 1993. Gilbert Duperray ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Gilbert Duperray in Lozanne, FR.

Patents per Year

Patents granted per year, 1981 to 1993Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811991: 1 patents19911992: 1 patents19921993: 1 patents1993

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5242976 Composition for improving adhesion of vinylidene polyfluoride and non-compatible polymeric resins Albert Strassel, Philippe Rocher 1993-09-07
5112692 Polyvinylidene fluoride composite and method Albert Strassel 1992-05-12
5019444 Polyvinylidene fluoride products with a surface adapted to adhere to an incompatible polymer and process for treating the surface of a polyvinylidene fluoride material to enable it to adhere to an incompatible polymer Daniel G. Wolff 1991-05-28
4267237 Molded preformed polytetrafluoroethylene structures Andre Monnet, Claude Tournut 1981-05-12