Nagarajan; Prasanna
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nagarajan; Prasanna.The latest application filed is for "system and method for addressing elevator drive faults".
- Nagarajan; Prasanna - Farmington CT
| Patent | Date |
|---|---|
| System And Method For Addressing Elevator Drive Faults App 20220204315 - Nagarajan; Prasanna ; et al. | 2022-06-30 |
| Emergency braking for a drive system Grant 11,296,623 - Nagarajan , et al. April 5, 2 | 2022-04-05 |
| Fault Classification In Elevator Systems App 20210371242 - Schonauer; Uwe ; et al. | 2021-12-02 |
| Elevator machine brake delay control Grant 11,040,848 - Cardona , et al. June 22, 2 | 2021-06-22 |
| Rescue control and method of operating an elevator system including a permanent magnet (PM) synchronous motor drive system Grant 11,014,778 - Piedra , et al. May 25, 2 | 2021-05-25 |
| Emergency Braking For A Drive System App 20200259430 - A1 | 2020-08-13 |
| Emergency braking for a drive system Grant 10,680,538 - Nagarajan , et al. | 2020-06-09 |
| Active Braking For Immediate Stops App 20200055693 - Nagarajan; Prasanna ; et al. | 2020-02-20 |
| PWM strategy for regenerative multilevel drive Grant 10,513,413 - Agirman , et al. Dec | 2019-12-24 |
| Elevator Machine Brake Delay Control App 20190300330 - CARDONA; Camilo ; et al. | 2019-10-03 |
| Elevator drive control to protect drive components from moisture Grant 10,287,131 - Nagarajan , et al. | 2019-05-14 |
| Emergency Braking For A Drive System App 20190097551 - Nagarajan; Prasanna ; et al. | 2019-03-28 |
| Elevator Drive Control To Protect Drive Components From Moisture App 20180346285 - NAGARAJAN; Prasanna ; et al. | 2018-12-06 |
| Rescue Control And Method Of Operating An Elevator System Including A Permanent Magnet (pm) Synchronous Motor Drive System App 20180244492 - PIEDRA; Edward D. ; et al. | 2018-08-30 |
| Uninterrupted Rescue Operation App 20180215582 - Lotfi; Amir ; et al. | 2018-08-02 |
| Advanced Smooth Rescue Operation App 20180016114 - Nagarajan; Prasanna ; et al. | 2018-01-18 |
| Advanced smooth rescue operation Grant 9,809,418 - Nagarajan , et al. November 7, 2 | 2017-11-07 |
| Uninterrupted Rescue Operation App 20170283213 - Lotfi; Amir ; et al. | 2017-10-05 |
| Advanced Smooth Rescue Operation App 20170247222 - Nagarajan; Prasanna ; et al. | 2017-08-31 |
| Pwm Strategy For Regenerative Multilevel Drive App 20160311644 - Agirman; Ismail ; et al. | 2016-10-27 |
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