C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 1/30 (2006.01) C23F 1/18 (2006.01) C23F 1/44 (2006.01) H05K 3/06 (2006.01)
Patent
CA 2090349
Tin or tin-lead, and any underlying copper-tin intermetallic, are stripped from a copper surface utilizing an aqueous solution consisting of nitric acid, ferric nitrate, and a solution-soluble source of halide ion, such as hydrochloric acid.
Macdermid Incorporated
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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