Frederick W. Devries

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Chadds Ford, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for treating waste containing cyanates
- Patent number 5,271,849
- Issue date Dec 21, 1993
- Frederick W. Devries
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Hydrogen peroxide in sulfuric acid extraction of uranium ores
- Patent number 4,425,307
- Issue date Jan 10, 1984
- E. I. Du Pont de Nemours & Co.
- Frederick W. DeVries
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Restoration of uranium solution mining deposits
- Patent number 4,311,341
- Issue date Jan 19, 1982
- E. I. Du Pont de Nemours and Company
- Frederick W. DeVries
- E21 - EARTH DRILLING MINING