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James B. Hakko
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Waukegan, IL, US
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last 30 patents
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Patent Grant
Tantalum metal powder
Patent number
4,141,719
Issue date
Feb 27, 1979
Fansteel Inc.
James B. Hakko
B22 - CASTING POWDER METALLURGY
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Patent Grant
Tantalum metal powder
Patent number
4,017,302
Issue date
Apr 12, 1977
Fansteel Inc.
Victor T. Bates
B22 - CASTING POWDER METALLURGY