Donald Charles

Person

Wauconda, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
System for detecting a position of a fume hood sash
- Patent number 10,109,071
- Issue date Oct 23, 2018
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Grant
Temperature compensation for DC motor PWM applications
- Patent number 10,110,158
- Issue date Oct 23, 2018
- Siemens Schweiz AG
- Donald E. Charles
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatus for increasing resolution of resistance sensing
- Patent number 9,791,486
- Issue date Oct 17, 2017
- Siemens Industry, Inc.
- Donald E. Charles
- G01 - MEASURING TESTING
Information Patent Grant
Sash position determining system
- Patent number 9,541,378
- Issue date Jan 10, 2017
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Grant
System for detecting a position of a fume hood sash
- Patent number 9,527,119
- Issue date Dec 27, 2016
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Grant
Increasing resolution of resistance measurements
- Patent number 9,429,606
- Issue date Aug 30, 2016
- Siemens Industry, Inc.
- Donald E. Charles
- G01 - MEASURING TESTING
Information Patent Grant
Automated bypass method and apparatus
- Patent number 7,598,628
- Issue date Oct 6, 2009
- Siemens Building Technologies, Inc.
- Ronald Zver
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply having dual current feedback
- Patent number 7,295,451
- Issue date Nov 13, 2007
- Siemens Building Technologies, Inc.
- Donald E. Charles
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fail-safe electric actuator using high voltage capacitors
- Patent number 7,023,163
- Issue date Apr 4, 2006
- Siemens Building Technologies
- Donald E. Charles
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Room temperature sensor and thermostat control device
- Patent number 5,934,554
- Issue date Aug 10, 1999
- Siemens Building Technologies, Inc.
- Donald E. Charles
- G05 - CONTROLLING REGULATING
Information Patent Grant
Room temperature sensor and thermostat control device
- Patent number 5,816,492
- Issue date Oct 6, 1998
- Landis & Staefa, Inc.
- Donald E. Charles
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM FOR DETECTING A POSITION OF A FUME HOOD SASH
- Publication number 20170061630
- Publication date Mar 2, 2017
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Application
MAXIMIZING RESOLUTION OF RESISTANCE SENSING
- Publication number 20160334448
- Publication date Nov 17, 2016
- Siemens Industry, Inc.
- Donald E. Charles
- G01 - MEASURING TESTING
Information Patent Application
MAXIMIZING RESOLUTION OF RESISTANCE SENSING
- Publication number 20150091591
- Publication date Apr 2, 2015
- Siemens Industry, Inc.
- Donald E. Charles
- G01 - MEASURING TESTING
Information Patent Application
SASH POSITION DETERMINING SYSTEM
- Publication number 20140273783
- Publication date Sep 18, 2014
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Application
SYSTEM FOR DETECTING A POSITION OF A FUME HOOD SASH
- Publication number 20140080396
- Publication date Mar 20, 2014
- Siemens Industry, Inc.
- Donald E. Charles
- B08 - CLEANING
Information Patent Application
Switching power supply having dual current feedback
- Publication number 20070217230
- Publication date Sep 20, 2007
- Siemens Building Corporation
- Donald E. Charles
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Fail-safe electric actuator using high voltage capacitors
- Publication number 20050127854
- Publication date Jun 16, 2005
- Donald E. Charles
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Automated bypass method and apparatus
- Publication number 20050035664
- Publication date Feb 17, 2005
- Ronald Zver
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Donald Charles

Person

Patents Grantslast 30 patents

System for detecting a position of a fume hood sash

Temperature compensation for DC motor PWM applications

Apparatus for increasing resolution of resistance sensing

Sash position determining system

System for detecting a position of a fume hood sash

Increasing resolution of resistance measurements

Automated bypass method and apparatus

Switching power supply having dual current feedback

Fail-safe electric actuator using high voltage capacitors

Room temperature sensor and thermostat control device

Room temperature sensor and thermostat control device

Patents Applicationslast 30 patents

SYSTEM FOR DETECTING A POSITION OF A FUME HOOD SASH

MAXIMIZING RESOLUTION OF RESISTANCE SENSING

MAXIMIZING RESOLUTION OF RESISTANCE SENSING

SASH POSITION DETERMINING SYSTEM

SYSTEM FOR DETECTING A POSITION OF A FUME HOOD SASH

Switching power supply having dual current feedback

Fail-safe electric actuator using high voltage capacitors

Automated bypass method and apparatus