C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/129
C22B 5/18 (2006.01) C22B 4/00 (2006.01) C22B 34/24 (2006.01)
Patent
CA 1276072
ABSTRACT A process for producing niobium metal of an ultrahigh purity, which comprises iodizing niobium metal or niobium chloride containing at least tantalum as an impurity, thermally reducing the iodized product, and then thermally decomposing the reduced product.
510635
Kudo Masayuki
Nishizawa Keiichiro
Sudo Hajime
Kudo Masayuki
Marks & Clerk
Nishizawa Keiichiro
Sudo Hajime
Tosoh Corporation
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