Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Daryl J. Marvin — 6 Patents in 2020

OEOtis Elevator: 6 patents #7 of 278Top 3%
Farmington, CT: #4 of 58 inventorsTop 7%
Connecticut: #215 of 4,387 inventorsTop 5%
Overall (2020): #26,959 of 565,922Top 5%
6 Patents 2020

Issued Patents 2020

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
10781075 Emergency safety actuator for an elevator Tadeusz Pawel Witczak, Zbigniew Piech 2020-09-22
10773922 Drive and control for six-phase electrical machines with negligible common-mode voltage Dong JIANG, Shashank Krishnamurthy 2020-09-15
10745238 Power distribution for multicar, ropeless elevator system Shashank Krishnamurthy, Luis Arnedo 2020-08-18
10654686 Electromagnetic safety trigger Guohong Hu 2020-05-19
10618776 Brake member actuation mechanism Guohong Hu 2020-04-14
10578639 Hybrid altimeter for measuring vertical velocity Craig Drew Bogli, Benjamin J. Watson, Arthur T. Grondine, Marcin Wroblewski 2020-03-03