US2966448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of electroplating aluminum and alloys thereof
Assignee: General Electric Co
•
Filing: 1958-06-04
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Granted: 1960-12-27
•
Expires: 1978-06-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:58
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD OF PREPARING AN ALUMINUM CONTAINING ARTICLE FOR THE APPLICATION THEREON OF AN ELECTROPLATED METAL COATING WHICH COMPRISES (1) IMMERSING SAID ALUMINUM BASE ARTICLE IN A HOT BATH CONTAINING ALKALI HYDROXIDE AND ALKALI POTASSIUM TARTRATE. (2) REMOVING SAID ARTICLE FROM SAID BATH AND RINSING SAID ARTICLE. (3) IMMERSING SAID ARTICLE IN A BATH COMPRISING AN AQUEOUS SOLUTION OF ZINC CYANIDE, ALKALI CYANIDE, ALKALI HYDROXIDE AND ALKALI SULFIDE UNTIL A THIN DISPLACEMENT COATING OF ZINC IS DEPOSITED THEREON, (4) PASSING A DIRECT ELECTRIC CURRENT THROUGH SAID BATH WITH THE ARTICLE AS THE CATHODE AT CURRENT DENSITES UP TO THE ORDER OF 1500 AMPERES PER SQUARE FOOT AT TEMPERATURES RANGING FROM ABOUT 50*F. TO 120* F. UNTIL A THIN ELECTRODEPOSIT OF ZINC IS APPLIED THERETO, AND (5) ELECTRODEPOSITING A METAL COATING ON SAID ZINC COATED ARTICLE.
Claim 2
Independent Claim
135 words
THE METHOD OF PREPARING AN ALUMINUM CONTAINING ARTICLE FOR THE APPLICATION THEREON OF AN ELECTROPLATED METAL COATING WHICH COMPRISES (1) IMMERSING SAID ALUMINUM BASE ARTICLE IN A HOT BATH CONTAINING ALKALI HYDROXIDE AND ALKALI POTASSIUM TARTRATE. (2) REMOVING SAID ARTICLE FROM SAID BATH AND RINSING SAID ARTICLE. (3) IMMERSING SAID ARTICLE IN A BATH COMPRISING AN AQUEOUS SOLUTION OF ZINC CYANIDE, ALKALI CYANIDE, ALKALI HYDROXIDE AND ALKALI SULFIDE UNTIL A THIN DISPLACEMENT COATING OF ZINC IS DEPOSITED THEREON, (4) PASSING A DIRECT ELECTRIC CURRENT THROUGH SAID BATH WITH THE ARTICLE AS THE CATHODE AT CURRENT DENSITES UP TO THE ORDER OF 1500 AMPERES PER SQUARE FOOT AT TEMPERATURES RANGING FROM ABOUT 50*F. TO 120* F. UNTIL A THIN ELECTRODEPOSIT OF ZINC IS APPLIED THERETO, AND (5) ELECTRODEPOSITING A METAL COATING ON SAID ZINC COATED ARTICLE.
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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |