from spent catalysts

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Patents Grantslast 30 patents

Information Patent Grant
Process for separating and recovering base metals from used hydropr...
- Patent number 7,837,960
- Issue date Nov 23, 2010
- Chevron U.S.A. Inc.
- Rahul S. Bhaduri
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for reducing chromium in nonvolatile residue resulting from...
- Patent number 6,814,867
- Issue date Nov 9, 2004
- Inuista North America S.à.r.l.
- Ludovic Fodor
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process to recover metals from spent catalyst
- Patent number 6,180,072
- Issue date Jan 30, 2001
- Shell Oil Company
- Jack Thomas Veal
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method and apparatus for separating copper from chromite
- Patent number 5,158,602
- Issue date Oct 27, 1992
- Diversified Recycling Technology
- Bernard Greenberg
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
3539290
- Patent number 3,539,290
- Issue date Nov 10, 1970
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
2139602
- Patent number 2,139,602
- Issue date Dec 6, 1938
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...