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Christopher S. Czerwinski
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Middletown, CT, US
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Patents Grants
last 30 patents
Information
Patent Grant
Pulse width modulation interleaving
Patent number
11,404,954
Issue date
Aug 2, 2022
Carrier Corporation
Da Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
System and method of maintaining performance of a system
Patent number
10,513,414
Issue date
Dec 24, 2019
Otis Elevator Company
Yang Wang
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Elevator motor drive tolerant of an irregular power source
Patent number
8,127,894
Issue date
Mar 6, 2012
Otis Elevator Company
Ismail Agirman
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Operating a three phase device using single phase power
Patent number
7,609,534
Issue date
Oct 27, 2009
Otis Elevator Company
Ismail Agirman
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Method and apparatus for encoderless operation of a permanent magne...
Patent number
6,492,788
Issue date
Dec 10, 2002
Otis Elevator Company
Ismail Agirman
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor drive parameters
Patent number
6,483,271
Issue date
Nov 19, 2002
Otis Elevator Company
Ronnie E. Thebeau
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Determining phase of AC mains in PWM controlled converters without...
Patent number
6,459,599
Issue date
Oct 1, 2002
Otis Elevator Company
Ismail Agirman
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Reduced common voltage in a DC matrix converter
Patent number
6,166,930
Issue date
Dec 26, 2000
Otis Elevator Company
Christopher S. Czerwinski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Control of a DC matrix converter
Patent number
6,058,028
Issue date
May 2, 2000
Otis Elevator Company
Christopher S. Czerwinski
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Low-inductance planar bus arrangement
Patent number
5,808,240
Issue date
Sep 15, 1998
Otis Elevator Company
Christopher S. Czerwinski
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
PULSE WIDTH MODULATION INTERLEAVING
Publication number
20200251980
Publication date
Aug 6, 2020
Carrier Corporation
Da Zhang
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
SYSTEM AND METHOD OF MAINTAINING PERFORMANCE OF A SYSTEM
Publication number
20180257907
Publication date
Sep 13, 2018
Otis Elevator Company
Yang WANG
B66 - HOISTING LIFTING HAULING
Information
Patent Application
Elevator Motor Drive Tolerant of an Irregular Power Source
Publication number
20090301819
Publication date
Dec 10, 2009
Otis Elevator Company
Ismail Agirman
B66 - HOISTING LIFTING HAULING
Information
Patent Application
Operating a Three Phase Device Using Single Phase Power
Publication number
20070253231
Publication date
Nov 1, 2007
Ismail Agirman
B66 - HOISTING LIFTING HAULING