Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Depositing predominantly alloy coating
Reexamination Certificate
2005-08-02
2005-08-02
King, Roy (Department: 1742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Depositing predominantly alloy coating
C205S302000
Reexamination Certificate
active
06923899
ABSTRACT:
Provided for is a solution for use in the electroplating of tin and tin alloys comprising a basis solution comprising an acid, optionally a salt thereof, the acid selected from the group consisting of fluoboric acid, an organic sulfonic acid, a mineral acid, or a combination thereof; divalent tin ions; and an antioxidant comprising a hydroxy benzene sulfonic acid or salt thereof, in an amount effective to prevent the oxidation of divalent tin ions. Also provided for is a method for electroplating comprising electroplating a substrate using an electroplating solution comprising a hydroxy benzene sulfonic acid or salt thereof in an amount effective to decrease the oxidation of tin ions.
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Brown Neil D.
Chirafisi Angelo
Levey Peter R.
King Roy
Leader William T.
Piskorski John J.
Shipley Company L.L.C.
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