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John J. Vithayathil
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Portland, OR, US
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Patents Grants
last 30 patents
Information
Patent Grant
Circuit arrangement for the static generation of a variable electri...
Patent number
6,867,570
Issue date
Mar 15, 2005
John J. Vithayathil
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
AC-DC converters with bi-directional thyristor valves
Patent number
6,587,362
Issue date
Jul 1, 2003
John J. Vithayathil
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and circuits for changing the ratings of a three phase circu...
Patent number
6,479,910
Issue date
Nov 12, 2002
John J. Vithayathil
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Brushless AC field system for stable frequency variable speed alter...
Patent number
6,188,204
Issue date
Feb 13, 2001
Joseph Vithayathil
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
HVDC transmission with a converter connected between an AC voltage...
Patent number
5,414,612
Issue date
May 9, 1995
Asea Brown Boveri AB
Per-Erik Bjorklund
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Scheme for rapid adjustment of network impedance
Patent number
5,032,738
Issue date
Jul 16, 1991
John J. Vithayathil
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Information
Patent Application
Circuit arrangement for the static generation of a variable electri...
Publication number
20040066664
Publication date
Apr 8, 2004
John J. Vithayathil
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
AC-DC converters with integrated SVC
Publication number
20030223256
Publication date
Dec 4, 2003
John J. Vithayathil
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...