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Hengli Ma
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Tucson, AZ, US
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last 30 patents
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Patent Grant
Extraction of rare earth elements using alkyl phosphinic acid or sa...
Patent number
5,639,433
Issue date
Jun 17, 1997
Cytec Technology Corp.
Chengye Yuan
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Extraction of rare earth elements using alkyl phosphinic acid or sa...
Patent number
5,622,679
Issue date
Apr 22, 1997
Cytec Technology Corp.
Chengye Yuan
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...