US3396042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical gold plating composition
Assignee: Sel Rex Corp
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Filing: 1961-08-28
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Granted: 1968-08-06
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Duva Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:22
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
AS A COMPOSITION FOR CHEMICALLY DEPOSITING GOLD AN AQUEOUS SOLUTION CONISTING ESSENTIALLY OF 0.5-30 G./1. OF A SOLUBLE GOLD CYANIDE, 0.01 TO 30 G./1. OF A SOLUBLE PALLADOUS SALT, ABSENT SUFFICIENT CN IONS TO PREVENT DEPOSITION INDUCED BY SAID PALLADOUS SALT, AND SUFFICIENT ALKALI TO PROVIDE A PH OF 8-11.
Claim 2
Dependent Claim
50 words
AS A COMPOSITION FOR CHEMICALLY DEPOSITING GOLD AN AQUEOUS SOLUTION CONISTING ESSENTIALLY OF 0.5-30 G./1. OF A SOLUBLE GOLD CYANIDE, 0.01 TO 30 G./1. OF A SOLUBLE PALLADOUS SALT, ABSENT SUFFICIENT CN IONS TO PREVENT DEPOSITION INDUCED BY SAID PALLADOUS SALT, AND SUFFICIENT ALKALI TO PROVIDE A PH OF 8-11.
Claim 3
Dependent Claim
80 words
A PROCESS FOR DEPOSITING GOLD ON A WORKPIECE HAVING A CONDUCTING SURFACE COMPRISING IMMERSING THE WORKPIECE IN AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF 0.5-30 G./1. OF A SOLUBLE GOLD CYANIDE, SUFFICIENT ALKALI TO PROVIDE A PH OF 8-11, IN THE PRESENCE OF 0.01 TO 30 G./1. OF A SOLUBLE PALLADOUS SALT, AND IN THE ABSENCE OF SUFFICIENT CN IONS TO PREVENT DEPOSITION INDUCED BY SAID PALLADOUS SALT WHEREUPON GOLD IS DEPOSITED ON SAID CONDUCTING SURFACE BY THE CHEMICAL REDUCTION PROCESS.
Claim 4
Dependent Claim
80 words
A PROCESS FOR DEPOSITING GOLD ON A WORKPIECE HAVING A CONDUCTING SURFACE COMPRISING IMMERSING THE WORKPIECE IN AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF 0.5-30 G./1. OF A SOLUBLE GOLD CYANIDE, SUFFICIENT ALKALI TO PROVIDE A PH OF 8-11, IN THE PRESENCE OF 0.01 TO 30 G./1. OF A SOLUBLE PALLADOUS SALT, AND IN THE ABSENCE OF SUFFICIENT CN IONS TO PREVENT DEPOSITION INDUCED BY SAID PALLADOUS SALT WHEREUPON GOLD IS DEPOSITED ON SAID CONDUCTING SURFACE BY THE CHEMICAL REDUCTION PROCESS.
References Cited (Backward Citations)
US2719821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |