Karl A. Romberger

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Gilbertsville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Recovery of metal values and hydrofluoric acid from tantalum and co...
- Patent number 5,023,059
- Issue date Jun 11, 1991
- Edwin J. Bielecki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for dissolving tantalum/columbium materials containing alka...
- Patent number 4,663,130
- Issue date May 5, 1987
- Cabot Corporation
- Roger M. Bergman
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...