US3057789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold plating bath and process
Assignee: Individual
•
Filing: 1959-02-26
•
Granted: 1962-10-09
•
Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Paul T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A PROCESS FOR COATING THE SURFACE OF A CONDUCTIVE ARTICLE WHICH COMPRISES, IMMERSING THE ARTICLE IN AN ELECTROLYTIC BATH CYANIDE FREE CONTAINING A SODIUM GOLD SULFITE COMPLEX, AND A SOLUBLE SALT OF ANOTHER METAN AND PASSING AN ELECTRIC CURRENT BETWEEN AN ANODE AND SAID ARTICLE AS A CATHODE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |