Elwin L. Rooy

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Franklin Park Boro, 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
Grain refining
- Patent number 4,793,971
- Issue date Dec 27, 1988
- Aluminum Company of America
- Charles E. Eckert
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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...