Patent US3159693A successfully refreshed from Google Patents.
US2956901A
Expired / Lapsed
US
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Copper coating composition and method of coating
Assignee: ALPHA METAL LAB Inc
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Filing: 1958-08-06
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Granted: 1960-10-18
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Expires: 1978-08-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Carlson
- 👤 Carl E Prymula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/38; C23C18/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS OF COATING A SURFACE WITH COPPER WHICH COMPRISES MIXING TOGETHER A SOLUTION CONSISTING ESSENTIALLY OF COPPER CYANIDE AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF 2.0 TO 12.0 GRAMS PER LITEWR OF ETHYLENEDIAMINE TETRACETIC ACID, 2.0 TO 12.0 GRAMS PER LITER OF THE ALKALI METAL SALTS THEREOF, AND FROM 2.0 TO 10.0 GRAMS PER LITER OF AN ALKALI METAL CYANIDE, THE ALKALI METAL CYANIDE BEING PRESENT IN A MOLAR RATIO OF ALKALI METAL CYANIDE TO COPPER CYANIDE OF BELOW APPROXIMATELY 2.89, AND A REDUCER SOLUTION COMPOSITION, CONSISTING ESSENTIALLY OF A SOLUTION OF AN ALKALI METAL HYDROSULPHITE, AND CONTACTING SAID SURFACE WITH THE MIXED SOLUTION.
Claim 2
Dependent Claim
107 words
THE PROCESS OF COATING A SURFACE WITH COPPER WHICH COMPRISES MIXING TOGETHER A SOLUTION CONSISTING ESSENTIALLY OF COPPER CYANIDE AND A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF 2.0 TO 12.0 GRAMS PER LITEWR OF ETHYLENEDIAMINE TETRACETIC ACID, 2.0 TO 12.0 GRAMS PER LITER OF THE ALKALI METAL SALTS THEREOF, AND FROM 2.0 TO 10.0 GRAMS PER LITER OF AN ALKALI METAL CYANIDE, THE ALKALI METAL CYANIDE BEING PRESENT IN A MOLAR RATIO OF ALKALI METAL CYANIDE TO COPPER CYANIDE OF BELOW APPROXIMATELY 2.89, AND A REDUCER SOLUTION COMPOSITION, CONSISTING ESSENTIALLY OF A SOLUTION OF AN ALKALI METAL HYDROSULPHITE, AND CONTACTING SAID SURFACE WITH THE MIXED SOLUTION.
References Cited (Backward Citations)
GB190004804A
Cited
US2776918A
Cited
US2766138A
Cited
US2814590A
Cited
GB794261A
Cited
US2813066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |