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Primary Examiner: Kaplan, G. L.
Assistant Examiner:
Attorney: Kluegel; Arthur E., Mueller; Richard P., Claeboe; B. F.

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Title: Gold sulfite baths containing organophosphorous compounds

Abstract: Disclosed is an improved gold-sulfite bath for plating gold and gold alloy deposits. By the inclusion in the bath of small amounts of certain organic phosphorus compounds, the quality of the deposit is rendered less sensitive to substantial changes in operating variables.

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Inventors: Losi, Salvatore (Geneva, CH)
LaLanne, Pierre (Gex, FR)
Henzi, Rene (Geneva, CH)
Marka, Erwin (Geneva, CH)

Application Number: 607742
Filing Date: 1975-08-26
Publication_date: 1977-03-15
Assignee: Oxy Metal Industries Corporation (Warren, MI)
Primary Class(es): 205/248 205/249, 205/250, 205/267, 987/146
Other Classes:
US Patent Ref:

3057789	Oct, 1962	Smith	204/46.
3475292	Oct, 1969	Shoushanian	204/44.
3666640	May, 1972	Smith	204/44.
3672969	Jul, 1972	Nobel et al.	204/43.
3883409	May, 1975	Olivier	204/44.
3904493	Sep, 1975	Losi et al.	204/43.

Other Refs: Other References: Sonya J. Westerback et al., Nature, vol. 178, pp. 321-322, Aug. 11, 1956.