Patent US2916423A successfully refreshed from Google Patents.
US2916423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper and copper alloys
Assignee: Primerica Inc
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Filing: 1957-06-19
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Granted: 1959-12-08
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Passal Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40; C25D3/56; C25D3/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN IMPROVED ALKALINE-CYANIDE BATH FOR PLATING A METAL SELECTED FROM THE CLASS CONSISTING OF COPPER AND COPPER BASE ALLOYS WHICH COMPRISES COPPER CYANIDE, FREE CYANIDE AND A SMALL BUT EFFECTIVE AMOUNT NOT LESS THAN ABOUT 0.06 MOLE PER LITER OF SACCHARATE ION, SAID AMOUNT BEING SUFFICIENT TO IMPROVE THE ANODE CURRENT EFFICIENT.
Claim 2
Dependent Claim
52 words
AN IMPROVED ALKALINE-CYANIDE BATH FOR PLATING A METAL SELECTED FROM THE CLASS CONSISTING OF COPPER AND COPPER BASE ALLOYS WHICH COMPRISES COPPER CYANIDE, FREE CYANIDE AND A SMALL BUT EFFECTIVE AMOUNT NOT LESS THAN ABOUT 0.06 MOLE PER LITER OF SACCHARATE ION, SAID AMOUNT BEING SUFFICIENT TO IMPROVE THE ANODE CURRENT EFFICIENT.
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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |