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Michael J. Tracey — 33 Patents

OEOtis Elevator: 33 patents #29 of 1,840Top 2%

Cromwell, CT: #5 of 129 inventorsTop 4%

Connecticut: #972 of 34,797 inventorsTop 3%

Overall (All Time): #105,480 of 4,157,543Top 3%

33 Patents All Time

Michael J. Tracey has been granted 33 US patents while listed as an inventor at Otis Elevator. The first was granted in 1997 and the most recent in August 2025. Michael J. Tracey ranks #105,480 of 4,157,543 US inventors in our database (top 2.5%). Patent records list Michael J. Tracey in Cromwell, CT, US.

Patents per Year

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12378095	System and method of unlocking and opening multiple panel elevator doors	James Chmiel	2025-08-05
12091283	Elevator door astragal	Colette Ruden	2024-09-17
11845631	Synchronizing assembly for elevator door and elevator	Zhiren Liu, Meihong Mao, Yunbin Cai, Jinkoo Lee	2023-12-19
11795033	Elevator car door interlock	Richard E. Kulak	2023-10-24
11760604	Versatile elevator door interlock assembly	—	2023-09-19
11661315	Monitoring system, elevator door system having monitoring system, and method	Richard E. Kulak	2023-05-30
11655122	Elevator door in interlock assembly	Richard E. Kulak	2023-05-23
11572251	Elevator door sensor fusion, fault detection, and service notification	Walter Thomas Schmidt, Abdelilah Sakti	2023-02-07
11440774	Elevator roping sway damper assembly	Cuauhtemoc Castro Inzunza, Patricia Derwinski	2022-09-13
11390487	Automated elevator safety chain diagnosis	Leslie C. Watterson	2022-07-19
11390492	Method and assembly for positioning an elevator door interlock	Erik Khzouz	2022-07-19
11254542	Car door interlock	Richard E. Kulak	2022-02-22
11247872	Elevator car door interlock	Richard E. Kulak	2022-02-15
11124389	Elevator car door interlock	Richard E. Kulak	2021-09-21
11072515	Automated elevator maintenance mode initiation	Tadeusz Pawel Witczak	2021-07-27
11046557	Elevator door interlock assembly	Richard E. Kulak	2021-06-29
11040858	Elevator door interlock assembly	Richard E. Kulak	2021-06-22
11034548	Elevator door interlock assembly	Richard E. Kulak	2021-06-15
10882720	Elevator car door interlock	Richard E. Kulak	2021-01-05
10837215	Zone object detection system for elevator system	Walter Thomas Schmidt, Enrico Manes, Norbert Antony Murray Hootsmans	2020-11-17
10710843	Car door interlock with sill lock	Richard E. Kulak	2020-07-14
10569994	Monitoring system, elevator door system having monitoring system, and method	Richard E. Kulak	2020-02-25
8272481	Guide assembly for at least one elevator door	Richard E. Kulak	2012-09-25
7650970	Elevator door lock sensor device including proximity sensor elements in a selected geometric pattern	Muhidin A. Lelic, Pei-Yuan Peng, Bryan Robert Siewert, Jacek F. Gieras, Thomas Malone	2010-01-26	$26,206,000
7543686	Elevator with rollers having selectively variable hardness	Richard E. Kulak	2009-06-09	$99,685,000