US2654702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodepostion of metal from alkaline cyanide bath
Assignee: Dow Chemical Co
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Filing: 1948-09-03
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Granted: 1953-10-06
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Expires: 1968-09-03
Abstract
No abstract record available.
Inventors
- 👤 Long Herbert K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D3/00; C25D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A METHOD OF DEPOSITING AN ELECTROPLATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, AND GOLD UPON ARTICLES OF MAGNESIUM AND MAGNESIUM ALLOYS FROM AN AQUEOUS ALKALINE CYANIDE PLATING SOLUTION HAVING A PH OF 9 TO 13 AND CONTAINING A CYANIDE OF ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, AND GOLD AND FROM 2 TO 5 GRAMS PER LITER OF CN PROVIDED BY AN ALKALI METAL CYANIDE BY ELECTROLYZING THE SOLUTION WITH THE ARTICLE AS CATHODE WHEREBY THE SELECTED METAL IS ELECRODEPOSITED ON THE ARTICLE, THE IMPROVEMENT WHICH CONSISTS IN DISSOLVING IN THE PLATING SOLUTION A WATER-SOLUBLE INORGANIC FLUORIDE SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL AND AMMONIUM FLUORIDES IN AMOUNT FROM 5 TO 100 GRAMS PER LITER OF THE PLATING SOLUTION.
Claim 2
Dependent Claim
133 words
IN A METHOD OF DEPOSITING AN ELECTROPLATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, AND GOLD UPON ARTICLES OF MAGNESIUM AND MAGNESIUM ALLOYS FROM AN AQUEOUS ALKALINE CYANIDE PLATING SOLUTION HAVING A PH OF 9 TO 13 AND CONTAINING A CYANIDE OF ONE OF THE METALS SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER, AND GOLD AND FROM 2 TO 5 GRAMS PER LITER OF CN PROVIDED BY AN ALKALI METAL CYANIDE BY ELECTROLYZING THE SOLUTION WITH THE ARTICLE AS CATHODE WHEREBY THE SELECTED METAL IS ELECRODEPOSITED ON THE ARTICLE, THE IMPROVEMENT WHICH CONSISTS IN DISSOLVING IN THE PLATING SOLUTION A WATER-SOLUBLE INORGANIC FLUORIDE SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL AND AMMONIUM FLUORIDES IN AMOUNT FROM 5 TO 100 GRAMS PER LITER OF THE PLATING SOLUTION.
References Cited (Backward Citations)
US946903A
Cited
US2449726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |