Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Larry S. O'Brien — 9 Patents

LELeco: 9 patents #7 of 94Top 8%
Three Rivers, MI: #107 of 578 inventorsTop 20%
Michigan: #10,567 of 86,293 inventorsTop 15%
Overall (All Time): #543,196 of 4,157,543Top 15%
9 Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
11899033 Access port for a thermogravimetric analyzer furnace 2024-02-13
5315091 Resistively heated sample preparation apparatus Gordon C. Ford, Peter M. Willis, Robert S. Tate 1994-05-24
5313047 Analytical sample preparation system Gordon C. Ford, Peter M. Willis, Ronald A. Klemm 1994-05-17
5064617 Combustion system Robert Warren, Keith J. Adani 1991-11-12
4530660 Analytical furnace window assembly William R. Strunk 1985-07-23
4522787 Ash fusion system Ward S. Kaler 1985-06-11
4462963 Analytical furnace Ward S. Kaler 1984-07-31
4352781 Combustion system 1982-10-05
4282183 Combustion system Roger L. Bredeweg, Charles B. Vallance 1981-08-04