Donald Stewart

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Latrobe, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Aluminum melting apparatus
- Patent number 8,917,754
- Issue date Dec 23, 2014
- Alcoa Inc.
- David DeYoung
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Controlled free vortex scrap ingester and molten metal pump
- Patent number 7,556,766
- Issue date Jul 7, 2009
- Alcoa Inc.
- Ho Yu
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
ALUMINUM MELTING APPARATUS
- Publication number 20140096644
- Publication date Apr 10, 2014
- ALCOA INC.
- David DeYoung
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Controlled Free Vortex Scrap Ingester and Molten Metal Pump
- Publication number 20070108674
- Publication date May 17, 2007
- Ho Yu
- C21 - METALLURGY OF IRON