Douglas A. Granger

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Murrysville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Lithoplate and method for making same
- Patent number 5,186,767
- Issue date Feb 16, 1993
- Aluminum Company of America
- Elwin L. Rooy
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for making lithoplate
- Patent number 4,902,353
- Issue date Feb 20, 1990
- Aluminum Company of America
- Elwin L. Rooy
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method for making lithoplate
- Patent number 4,818,300
- Issue date Apr 4, 1989
- Aluminum Company of America
- Elwin L. Rooy
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Architectural product
- Patent number 4,715,901
- Issue date Dec 29, 1987
- Aluminum Company of America
- Douglas A. Granger
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process and apparatus for reducing macrosegregation adjacent to a l...
- Patent number 4,709,747
- Issue date Dec 1, 1987
- Aluminum Company of America
- Ho Yu
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Aluminum alloy
- Patent number 4,681,736
- Issue date Jul 21, 1987
- Aluminum Company of America
- Michael M. Kersker
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...