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

David C. Campbell

BDBlack & Decker: 67 patents #20 of 2,138Top 1%
MSMetasolv Software: 4 patents #1 of 9Top 15%
Motorola: 3 patents #3,303 of 12,470Top 30%
Oracle: 3 patents #4,017 of 14,854Top 30%
PEPico Electronics: 2 patents #2 of 4Top 50%
UNUnknown: 2 patents #12,644 of 83,584Top 20%
FIFilmax: 1 patents #4 of 5Top 80%
Bel Air, MD: #2 of 482 inventorsTop 1%
Maryland: #73 of 35,612 inventorsTop 1%
Overall (All Time): #19,271 of 4,157,543Top 1%
87 Patents All Time

Issued Patents All Time

Showing 76–87 of 87 patents

Patent #TitleCo-InventorsDate
5895120 High speed thrust bearing assembly Lynn E. Lentino 1999-04-20
5850698 Portable circular saw Richard Hurn, Judd Staples, Gregory W. Arnold 1998-12-22
5822864 Viewing window for circular saw guard Gale A. Heslop, Lynn E. Lentino, Michael R. Sell 1998-10-20
5794351 Window assembly and lower saw guard for circular saw Gale A. Heslop 1998-08-18
5766464 Fluid filtration system positionable within a fluid-containing apparatus 1998-06-16
5749691 Reaction nut with cam action quick fastening 1998-05-12
5656999 Fluid leak containment system 1997-08-12
5624576 Pelletized composition for treatment of storm water runoff James H. Lenhart, Jr., John H. Knutson, William C. Stewart 1997-04-29
5561907 Algning mechanism for hand-held power saw Paul G. Gross, Gale A. Heslop 1996-10-08
4811271 Expandable bi-phase convolving element Alan C. Svoboda, John W. Locke 1989-03-07
4638299 Electrical appliance control 1987-01-20
4200862 Appliance control David R. Thompson 1980-04-29