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USPTO Patent Rankings Data through Dec 31, 2025
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Daniel B. Davis, III — 3 Patents in 2020

OEOtis Elevator: 3 patents #32 of 278Top 15%
Middlefield, CT: #1 of 6 inventorsTop 20%
Connecticut: #577 of 4,387 inventorsTop 15%
Overall (2020): #94,266 of 565,922Top 20%
3 Patents 2020

Issued Patents 2020

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10737908 Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2020-08-11
10625984 Counterweight for elevator system Bruce St. Pierre, Bruce P. Swaybill 2020-04-21
10618775 Retrofitting an elevator machine with primary and secondary braking Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2020-04-14