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USPTO Patent Rankings Data through Dec 31, 2025
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Robert K. Williams — 5 Patents

OEOtis Elevator: 5 patents #308 of 1,840Top 20%
Tariffville, CT: #10 of 21 inventorsTop 50%
Connecticut: #8,579 of 34,797 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert K. Williams has been granted 5 US patents while listed as an inventor at Otis Elevator. The first was granted in 2020 and the most recent in July 2022. Robert K. Williams ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert K. Williams in Tariffville, CT, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11377323 Retrofitting an elevator machine with primary and secondary braking Daniel B. Davis, III, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2022-07-05
11299374 Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine Daniel B. Davis, III, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2022-04-12
10737908 Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine Daniel B. Davis, III, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2020-08-11
10618775 Retrofitting an elevator machine with primary and secondary braking Daniel B. Davis, III, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more 2020-04-14
10611600 Hydraulic elevator system with position or speed based valve control Matthew Sean Morrison, Gregory M. O'Seep 2020-04-07