Patent US2809929A successfully refreshed from Google Patents.
US2809929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode for copper plating
Assignee: Individual
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Filing: 1955-01-21
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Granted: 1957-10-15
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Expires: 1975-01-21
Abstract
No abstract record available.
Inventors
- 👤 Barnet D Ostrow
- 👤 Fred I Nobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:10
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/10; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF ELECTROLYTICALLY DEPOSITING COPPER FROM AN ALKALINE CYANIDE COPPER BATH WHICH COMPRISES CARRYING OUT SAID DEPOSITION BY PASSAGE OF AN ELECTRIC CURRENT FROM AN ANODE OF SUBSTANTIALLY PURE COPPER CONTAINING ONLY THE SMALL AMOUNT OF IMPURITIES NORMALLY PRESENT IN COMMERCIAL REFINED COPPER, SAID ANODE HAVING INCOPORATED THEREIN A METAL TAKEN FROM THE CLASS CONSISTING OF NICKEL, COBALT AND IRON IN AMOUNT FROM ABOUT .05% TO 1.5% BASED ON SAID COPPER, THROUGH SAID ALKALINE CYANIDE COPPER BATH TO A CATHODE.
Claim 2
Independent Claim
81 words
A METHOD OF ELECTROLYTICALLY DEPOSITING COPPER FROM AN ALKALINE CYANIDE COPPER BATH WHICH COMPRISES CARRYING OUT SAID DEPOSITION BY PASSAGE OF AN ELECTRIC CURRENT FROM AN ANODE OF SUBSTANTIALLY PURE COPPER CONTAINING ONLY THE SMALL AMOUNT OF IMPURITIES NORMALLY PRESENT IN COMMERCIAL REFINED COPPER, SAID ANODE HAVING INCOPORATED THEREIN A METAL TAKEN FROM THE CLASS CONSISTING OF NICKEL, COBALT AND IRON IN AMOUNT FROM ABOUT .05% TO 1.5% BASED ON SAID COPPER, THROUGH SAID ALKALINE CYANIDE COPPER BATH TO A CATHODE.
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) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |