Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Hayden Leason — 8 Patents

FIFiltertek: 8 patents #1 of 36Top 3%
Humacao, PR: #1 of 24 inventorsTop 5%
Puerto Rico: #38 of 1,143 inventorsTop 4%
Overall (All Time): #670,663 of 4,157,543Top 20%
8 Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
5049274 Friction welding process and filter formed thereby Thomas A. Cain, Andrew Boast 1991-09-17
D310421 Flat brick border section Lavergne Nauseda 1990-09-04
4828694 Filter with filtration envelope spacing means 1989-05-09
4749003 Center flow check valve 1988-06-07
4601820 Low-profile inline filter 1986-07-22
4547190 Inlet blood filter assembly 1985-10-15
4414172 Process and apparatus for sealing a plurality of filter elements 1983-11-08
4400277 Low-profile inline filter 1983-08-23