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Ezhil Nanjappan
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Farmington, CT, US
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Patents Grants
last 30 patents
Information
Patent Grant
Emergency stop system for elevator
Patent number
12,157,657
Issue date
Dec 3, 2024
Otis Elevator Company
Ezhil Nanjappan
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Monitoring of conveyance system vibratory signatures
Patent number
11,724,910
Issue date
Aug 15, 2023
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Elevator sensor system floor mapping
Patent number
11,584,614
Issue date
Feb 21, 2023
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Variable thresholds for an elevator system
Patent number
11,518,650
Issue date
Dec 6, 2022
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Lone worker safely check
Patent number
11,330,418
Issue date
May 10, 2022
Otis Elevator Company
Ezhil Nanjappan
G08 - SIGNALLING
Information
Patent Grant
Equipment service graphical interface
Patent number
11,029,810
Issue date
Jun 8, 2021
Otis Elevator Company
Ezhil Nanjappan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Work area technician warning system
Patent number
10,906,776
Issue date
Feb 2, 2021
Otis Elevator Company
Ezhil Nanjappan
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Elevator door wedge monitoring system
Patent number
10,800,635
Issue date
Oct 13, 2020
OTIS ELEVATOR COMPANY
Ezhil Nanjappan
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Lone worker fall detection
Patent number
10,462,638
Issue date
Oct 29, 2019
Otis Elevator Company
Ezhil Nanjappan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mechanical system service tool
Patent number
10,414,629
Issue date
Sep 17, 2019
Otis Elevator Company
Ezhil Nanjappan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Safety headwear status detection system
Patent number
10,217,345
Issue date
Feb 26, 2019
Otis Elevator Company
Ezhil Nanjappan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
IOT DATA SIMULATOR AND VALIDATOR
Publication number
20210209006
Publication date
Jul 8, 2021
Otis Elevator Company
Ezhil Nanjappan
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
EMERGENCY STOP SYSTEM FOR ELEVATOR
Publication number
20210163260
Publication date
Jun 3, 2021
Otis Elevator Company
Ezhil Nanjappan
B66 - HOISTING LIFTING HAULING
Information
Patent Application
ELEVATOR SENSOR SYSTEM FLOOR MAPPING
Publication number
20190382237
Publication date
Dec 19, 2019
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Application
VARIABLE THRESHOLDS FOR AN ELEVATOR SYSTEM
Publication number
20190382239
Publication date
Dec 19, 2019
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Application
MONITORING OF CONVEYANCE SYSTEM VIBRATORY SIGNATURES
Publication number
20190382238
Publication date
Dec 19, 2019
Otis Elevator Company
Tadeusz Pawel Witczak
B66 - HOISTING LIFTING HAULING
Information
Patent Application
EQUIPMENT SERVICE GRAPHICAL INTERFACE
Publication number
20190339841
Publication date
Nov 7, 2019
Otis Elevator Company
Ezhil Nanjappan
B66 - HOISTING LIFTING HAULING
Information
Patent Application
MECHANICAL SYSTEM SERVICE TOOL
Publication number
20190225458
Publication date
Jul 25, 2019
Otis Elevator Company
Ezhil Nanjappan
B66 - HOISTING LIFTING HAULING
Information
Patent Application
SAFETY HEADWEAR STATUS DETECTION SYSTEM
Publication number
20190066480
Publication date
Feb 28, 2019
Otis Elevator Company
Ezhil Nanjappan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ELEVATOR DOOR WEDGE MONITORING SYSTEM
Publication number
20190062108
Publication date
Feb 28, 2019
Otis Elevator Company
Ezhil Nanjappan
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
WORK AREA TECHNICIAN WARNING SYSTEM
Publication number
20190062109
Publication date
Feb 28, 2019
Otis Elevator Company
Ezhil Nanjappan
G08 - SIGNALLING
Information
Patent Application
LONE WORKER FALL DETECTION
Publication number
20180367969
Publication date
Dec 20, 2018
Otis Elevator Company
Ezhil Nanjappan
G01 - MEASURING TESTING
Information
Patent Application
LONE WORKER SAFETY CHECK
Publication number
20180367970
Publication date
Dec 20, 2018
Otis Elevator Company
Ezhil Nanjappan
G01 - MEASURING TESTING