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EA Elkem Aluminium Ans: 1 patents #4 of 6Top 70%
Overall (All Time): #3,772,942 of 4,157,543Top 95%
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Patent #TitleCo-InventorsDate
5424031 Grain refining alloy and a method for grain refining of aluminum and aluminum alloys Lars Arnberg, Gunnar Halvorsen 1995-06-13