Frank C. Haas

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Arvada, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for easily removing zinc from carbon black contaminated with...
- Patent number 4,264,568
- Issue date Apr 28, 1981
- Tosco Corporation
- Frank C. Haas
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method for recovering vanadium from petroleum coke
- Patent number 4,243,639
- Issue date Jan 6, 1981
- Tosco Corporation
- Frank C. Haas
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...