US2873234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper
Assignee: Primerica Inc
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Filing: 1957-06-19
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Granted: 1959-02-10
•
Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Passal Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:53
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38; C25D3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
AN ALKYLINE-CYANIDE BATH FOR BRIGHT COPPER PLATING COMPRISING COPPER CYANIDE AND, AS A BRIGHTENING AGENT MORE THAN 0.001 G.$ OF A LEAST ONE SELENIUM BISDITHIOCARBAMATE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
AN ALKYLINE-CYANIDE BATH FOR BRIGHT COPPER PLATING COMPRISING COPPER CYANIDE AND, AS A BRIGHTENING AGENT MORE THAN 0.001 G.$ OF A LEAST ONE SELENIUM BISDITHIOCARBAMATE HAVING THE GENERAL FORMULA:
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) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |