US3738920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating tarnish-inhibited bright silver alloy
Assignee: Individual
•
Filing: 1971-05-20
•
Granted: 1973-06-12
•
Expires: 1991-05-20
Abstract
Abstract A PLATING BATH, PROCESS AND ALLOY COMPRISING TIN, SILVER AND NICKEL FOR TARNISH-INHIBITED BRIGHT SILVER APPLICATIONS. AN ALKALINE CYANIDE WATER BATH IS EMPLOYED. THE ALLOY COMPOSITIONN IS 20 TO 45% BY WEIGHT OF TIN, 45 TO 70% BY WEIGHT OF SILVER, BALANCE NICKEL AND IMPURITIES.
Inventors
- 👤 G Viglione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:59
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/64; C22; C22C; C22C5/00; C22C5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |