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Roger D. Doherty
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Wynnewood, PA, US
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last 30 patents
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Patent Grant
Method for making a superplastically-formable AL-Mg product
Patent number
6,322,646
Issue date
Nov 27, 2001
Alcoa Inc.
Dhruba J. Chakrabarti
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Superplastically-formable Al-Mg-Si product and method
Patent number
6,063,210
Issue date
May 16, 2000
Aluminum Company of America
Dhruba J. Chakrabarti
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Aluminum alloy sheet for food and beverage containers
Patent number
5,192,378
Issue date
Mar 9, 1993
Aluminum Company of America
Roger D. Doherty
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Alloys containing gamma prime phase and particles and process for f...
Patent number
5,169,463
Issue date
Dec 8, 1992
SPS Technologies, Inc.
Roger D. Doherty
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Nickel-cobalt based alloys
Patent number
4,931,255
Issue date
Jun 5, 1990
SPS Technologies, Inc.
Roger D. Doherty
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Alloys containing gamma prime phase and process for forming same
Patent number
4,908,069
Issue date
Mar 13, 1990
SPS Technologies, Inc.
Roger D. Doherty
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Metal working method
Patent number
4,659,396
Issue date
Apr 21, 1987
Aluminum Company of America
Bernard W. Lifka
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...