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Duncan G. Wood
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Harpswell, ME, US
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Patents Grants
last 30 patents
Information
Patent Grant
Brushless high-frequency alternator and excitation method for DC, s...
Patent number
8,076,814
Issue date
Dec 13, 2011
Raven Energy Alternatives, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Brushless high-frequency alternator and excitation method for three...
Patent number
7,615,904
Issue date
Nov 10, 2009
Raven Energy Alternatives, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and apparatus for the production of power frequency alternat...
Patent number
7,071,657
Issue date
Jul 4, 2006
Raven Technology, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Apparatus for automatic tuning and control of series resonant circuits
Patent number
6,570,370
Issue date
May 27, 2003
Raven Technology, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Low inductance electrical machine
Patent number
6,177,746
Issue date
Jan 23, 2001
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Low inductance electrical machine for flywheel energy storage
Patent number
6,175,178
Issue date
Jan 16, 2001
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
SYSTEM AND METHOD FOR VARIABLE SPEED GENERATION OF CONTROLLED HIGH-...
Publication number
20130181688
Publication date
Jul 18, 2013
RAVEN ENERGY ALTERNATIVES, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
BRUSHLESS HIGH-FREQUENCY ALTERNATOR AND EXCITATION METHOD FOR DC, S...
Publication number
20100052626
Publication date
Mar 4, 2010
RAVEN ENERGY ALTERNATIVES, LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
BRUSHLESS HIGH-FREQUENCY ALTERNATOR AND EXCITATION METHOD FOR THREE...
Publication number
20080174195
Publication date
Jul 24, 2008
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Method and apparatus for the production of power frequency alternat...
Publication number
20050194941
Publication date
Sep 8, 2005
Raven Technology LLC
Christopher N. Tupper
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
APPARATUS FOR AUTOMATIC TUNING AND CONTROL OF SERIES RESONANT CIRCUITS
Publication number
20030038613
Publication date
Feb 27, 2003
Christopher N. Tupper
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...