John F. Waldron

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Elgin, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Battery charger and method utilizing alternating DC charging current
- Patent number 9,893,548
- Issue date Feb 13, 2018
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charger and method utilizing alternating DC charging current
- Patent number 9,450,435
- Issue date Sep 20, 2016
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charger and method utilizing alternating DC charging current
- Patent number 8,947,054
- Issue date Feb 3, 2015
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Battery charger and method utilizing alternating DC charging current
- Patent number 8,237,412
- Issue date Aug 7, 2012
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Battery Charger and Method Utilizing Alternating DC Charging Current
- Publication number 20160344202
- Publication date Nov 24, 2016
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BATTERY CHARGER AND METHOD UTILIZING ALTERNATING DC CHARGING CURRENT
- Publication number 20150155733
- Publication date Jun 4, 2015
- SCHUMACHER ELECTRIC CORPORATION
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BATTERY CHARGER AND METHOD UTILIZING ALTERNATING DC CHARGING CURRENT
- Publication number 20120306437
- Publication date Dec 6, 2012
- Schumacher Electric Corporation
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BATTERY MAINTENANCE KIT
- Publication number 20110068734
- Publication date Mar 24, 2011
- John F. Waldron
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Battery charger and method utilizing alternating DC charging current
- Publication number 20070114970
- Publication date May 24, 2007
- Thomas Finis Johnson
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER