Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
JF

John R. Froehler — 3 Patents

DSDraft Systems: 3 patents #3 of 9Top 35%
Calabasas, CA: #1,149 of 4,119 inventorsTop 30%
California: #149,087 of 386,348 inventorsTop 40%
Overall (All Time): #1,672,998 of 4,157,543Top 45%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4736926 Valve assembly and coupler therefor Merton R. Fallon 1988-04-12
4674756 Structurally supported elastomer sealing element Merton R. Fallon 1987-06-23
4219040 Rupture disc safety valve Merton R. Fallon 1980-08-26