US2676916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating on aluminum
Assignee: Alcoa Corp
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Filing: 1949-09-23
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Granted: 1954-04-27
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Expires: 1969-09-23
Abstract
No abstract record available.
Inventors
- 👤 Walter G Zelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:52
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS FOR ELECTROPLATING AN ALUMINUM ARTICLE WHEREIN THE ARTICEL IS PROVIDED WITH A ZINC DEPOSIT BY IMMERSION IN AN AQUEOUS ALKALINE ZINCATE BATH AND THEREAFTER ELECTROPLATED OVER SAID DEPOSIT, THE IMPROVEMENT THEREIN WHICH COMPRISES EMPLOYING IN SAID ZINCATE BATH AT LEAST ONE OF THE HYDROUS OXIDES OF METALS FROM THE IRON GROUP, THE AMOUNT OF IRON GROUP METAL PROVIDED BEING ABOUT 0.1 TO 1.5 GRAMS PER LITER OF BATH.
Claim 2
Dependent Claim
71 words
IN A PROCESS FOR ELECTROPLATING AN ALUMINUM ARTICLE WHEREIN THE ARTICEL IS PROVIDED WITH A ZINC DEPOSIT BY IMMERSION IN AN AQUEOUS ALKALINE ZINCATE BATH AND THEREAFTER ELECTROPLATED OVER SAID DEPOSIT, THE IMPROVEMENT THEREIN WHICH COMPRISES EMPLOYING IN SAID ZINCATE BATH AT LEAST ONE OF THE HYDROUS OXIDES OF METALS FROM THE IRON GROUP, THE AMOUNT OF IRON GROUP METAL PROVIDED BEING ABOUT 0.1 TO 1.5 GRAMS PER LITER OF BATH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |