Ivan M. Obushenko

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St. Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing titanium oxide from ore concentrates
- Patent number 5,679,131
- Issue date Oct 21, 1997
- Photran Corporation
- Ivan M. Obushenko
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...