US2923671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper electrodeposition process and anode for use in same
Assignee: Cyprus Amax Minerals Co
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Filing: 1957-03-19
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Granted: 1960-02-02
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Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 Gerald C Van Tilburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:51
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A COPPER ELECTRODEPOSITION PROCESS WHEREIN AN ELECTRIC CURRENT IS PASSED FROM A CONSUMABLE COPPER ANODE THROUGH AN ELECTROLYTE TO A CATHODE TO PROVIDE A DEPOSIT OF SUBSTANTIALLY PURE COPPER OFF SAID CATHODE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING TO THE ACTION OF SAID CURRENT AN ANODE CONSISTING OF OXYGEN-FREE HIGH CONDUCTIVITY COPPER TO WHICH IS ADDED FROM 0.0001% TO 0.001% BY WEIGHT OF LITHIUM TO EFFECT DISSOLUTION OF IMPROVED UNIFORMITY OF SAID ANODE WITH MINIMAL SLUDGE FORMATION WHILE FORMING A CATHODE DEPOSIT FREE OF NODULAR GROWTHS.
Claim 2
Dependent Claim
86 words
IN A COPPER ELECTRODEPOSITION PROCESS WHEREIN AN ELECTRIC CURRENT IS PASSED FROM A CONSUMABLE COPPER ANODE THROUGH AN ELECTROLYTE TO A CATHODE TO PROVIDE A DEPOSIT OF SUBSTANTIALLY PURE COPPER OFF SAID CATHODE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING TO THE ACTION OF SAID CURRENT AN ANODE CONSISTING OF OXYGEN-FREE HIGH CONDUCTIVITY COPPER TO WHICH IS ADDED FROM 0.0001% TO 0.001% BY WEIGHT OF LITHIUM TO EFFECT DISSOLUTION OF IMPROVED UNIFORMITY OF SAID ANODE WITH MINIMAL SLUDGE FORMATION WHILE FORMING A CATHODE DEPOSIT FREE OF NODULAR GROWTHS.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |