US3266929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold plating by immersion
Assignee: Shipley Co Inc
•
Filing: 1962-12-17
•
Granted: 1966-08-16
•
Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Edward H Lareau
- 👤 Jr Charles R Shipley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:23
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN AQUEOUS SOLUTION FOR THE PLATING OF GOLD BY CHEMICAL DISPLACEMENT, SAID SOLUTION COMPRISING GOLD IONS IN AMOUNTS SUFFICIENT TO PROVIDE A USEFUL DEPOSIT, CYANIDE IONS IN AN AMOUNT SUFFICIENT TO PROVIDE A MOLAR RATIO OF CYANIDE TO GOLD BETWEEN ABOUT 1.9 TO 1 AND 1 TO 1, AND AMMONIUM AND SULPHITE IONS IN AMOUNTS SUFFICIENT TO RENDER SAID GOLD STABLE IN SOLUTION DURING STORAGE AND USE, SAID SOLUTION HAVING A PH BETWEEN ABOUT 7.0 TO 10.5.
Claim 2
Dependent Claim
77 words
AN AQUEOUS SOLUTION FOR THE PLATING OF GOLD BY CHEMICAL DISPLACEMENT, SAID SOLUTION COMPRISING GOLD IONS IN AMOUNTS SUFFICIENT TO PROVIDE A USEFUL DEPOSIT, CYANIDE IONS IN AN AMOUNT SUFFICIENT TO PROVIDE A MOLAR RATIO OF CYANIDE TO GOLD BETWEEN ABOUT 1.9 TO 1 AND 1 TO 1, AND AMMONIUM AND SULPHITE IONS IN AMOUNTS SUFFICIENT TO RENDER SAID GOLD STABLE IN SOLUTION DURING STORAGE AND USE, SAID SOLUTION HAVING A PH BETWEEN ABOUT 7.0 TO 10.5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |