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Fred M. Fehsenfeld Sr.
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Indianapolis, IN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Mechanical separation of volatile metals at high temperatures
Patent number
6,932,853
Issue date
Aug 23, 2005
Heritage Environmental Services LLC
James E. Bratina
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Dual use of an induction furnace to produce hot metal or pig iron w...
Patent number
6,831,939
Issue date
Dec 14, 2004
Heritage Environmental Services, LLC
James E. Bratina
C21 - METALLURGY OF IRON
Information
Patent Grant
Low-noise switching power supply having variable reluctance transfo...
Patent number
4,994,952
Issue date
Feb 19, 1991
Electronics Research Group, Inc.
Donald M. Silva
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Low-noise switching power supply having variable reluctance transfo...
Patent number
4,876,638
Issue date
Oct 24, 1989
Electronic Research Group, Inc.
Donald M. Silva
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
Mechanical separation of volatile metals at high temperatures
Publication number
20040261577
Publication date
Dec 30, 2004
James E. Bratina
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Dual use of an induction furnace to produce hot metal or pig iron w...
Publication number
20040091014
Publication date
May 13, 2004
James E. Bratina
C21 - METALLURGY OF IRON