Edward Piedra — 17 Patents at Otis Elevator

Edward Piedra has been granted 17 US patents while listed as an inventor at Otis Elevator. The first was granted in 2002 and the most recent in October 2025. Edward Piedra ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Edward Piedra in Chicopee, MA, US.

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12434943	Beam climber active brake health monitoring system	Randy Roberts, Sam Thieu Wong, James L. Hubbard	2025-10-07
11548758	Health monitoring systems and methods for elevator systems	Randy Roberts, Bruce P. Swaybill	2023-01-10
11235948	Dynamic compensation control for elevator systems	Randy Roberts, David Ginsberg, Ronnie E. Thebeau, Konda Reddy Chevva, XiaoBin Tang	2022-02-01
11078049	Elevator system including a permanent magnet (PM) synchronous motor drive system	—	2021-08-03
11014778	Rescue control and method of operating an elevator system including a permanent magnet (PM) synchronous motor drive system	Prasanna Nagarajan	2021-05-25
10822197	Elevator run profile modification for smooth rescue	—	2020-11-03
10538412	Brake operation management in elevators	Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Dennis Hanvey +1 more	2020-01-21
10513414	System and method of maintaining performance of a system	Yang Wang, HanJong Kim, Christopher S. Czerwinski, Shashank Krishnamurthy, Draguna Vrabie +1 more	2019-12-24
10252879	Brake operation management in elevators	Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Dennis Hanvey +1 more	2019-04-09
9957131	Elevator speed control	Ismail Agirman	2018-05-01
9862568	Elevator run profile modification for smooth rescue	—	2018-01-09
9809418	Advanced smooth rescue operation	Prasanna Nagarajan, Amir Lotfi	2017-11-07
8127894	Elevator motor drive tolerant of an irregular power source	Ismail Agirman, Christopher S. Czerwinski, Jeffrey M. Izard, Vladimir Blasko, Frank Higgins +1 more	2012-03-06
8104584	Elevator drive control strategy	Ismail Agiman, Daryl J. Marvin	2012-01-31
8006808	Managing an encoder malfunction in an elevator drive system	Jeffrey M. Izard, Ismail Agirman	2011-08-30
6483271	Motor drive parameters	Ronnie E. Thebeau, Daryl J. Marvin, Christopher S. Czerwinski, Neil A. Greiner	2002-11-19	$17,857,000
6459599	Determining phase of AC mains in PWM controlled converters without voltage sensors	Ismail Agirman, Vladimir Blasko, Christopher S. Czerwinski, Jeffrey M. Izard	2002-10-01	$39,989,000

Edward Piedra — 17 Patents

Issued Patents All Time

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