Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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David S. Bem

UOUop: 9 patents #315 of 1,854Top 20%
Arlington Heights, IL: #210 of 1,285 inventorsTop 20%
Illinois: #10,078 of 84,256 inventorsTop 15%
Overall (All Time): #586,367 of 4,157,543Top 15%
9 Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6814871 Process for removing pollutants from aqueous streams Richard R. Willis, Daniel L. Ellig 2004-11-09
6806093 Process of parallel sample preparation Rune Wendelbo, Duncan E. Akporiaye, Ivar M. Dahl, Arne Karlsson, Gregory J. Lewis +3 more 2004-10-19
6677162 Process of parallel sample preparation Rune Wendelbo, Duncan E. Akporiaye, Ivar M. Dahl, Arne Karlsson, Gregory J. Lewis +3 more 2004-01-13
6579460 Process and composition for removing toxins from bodily fluids Richard R. Willis, Daniel L. Ellig 2003-06-17
6332985 Process for removing toxins from bodily fluids using zirconium or titanium microporous compositions John D. Sherman, Gregory J. Lewis 2001-12-25
6099737 Process for removing toxins from blood using zirconium metallate or titanium metallate compositions John D. Sherman, Gregory J. Lewis 2000-08-08
6007790 Family of microporous indium silicate compositions Robert L. Bedard, Lisa M. King, Jana L. Gisselquist, Susan C. Koster 1999-12-28
5891417 Zirconium silicate and zirconium germanate molecular sieves and process using the same John D. Sherman, Amedeo Napolitano, E. Alejandro Leon-Escamilla, Gregory J. Lewis, Robert L. Bedard 1999-04-06
5888472 Zirconium silicate molecular sieves and process using the same John D. Sherman, Amedeo Napolitano, E. Alejandro Leon-Escamilla, Gregory J. Lewis, Robert L. Bedard 1999-03-30