Clyde R. Johnson

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Claysville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Furnace with modular construction
- Patent number 4,702,694
- Issue date Oct 27, 1987
- Union Oil Company of California
- Clyde R. Johnson
- F27 - FURNACES KILNS OVENS RETORTS
Information Patent Grant
Ore roasting with recycle of gases
- Patent number 4,437,884
- Issue date Mar 20, 1984
- Union Oil Company of California
- Raymond Hawryluk
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...