US2791553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electroplating aluminum
Assignee: General Electric Co
•
Filing: 1956-02-15
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Granted: 1957-05-07
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Expires: 1976-02-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Connor
- 👤 Merion Lower
- 👤 Blumberg Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:28
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF PREPARING AN ALUMINUM BASE ARTICLE FOR THE APPLICATION OF AN ELECTROPLATED COATING WHICH COMPRISES IMMERSING SAID ALUMINUM BASE ARTICLE IN A HOT ELECTROLYTE BATH COMPRISING AN AQUEOUS SOLUTION OF ZINC CYANIDE, AN ALKALI CYANIDE AND AN ALKALI HYDROXIDE, ANODICALLY TREATING THE IMMERSED ARTICLE BY PASSING A DIRECT CURRENT THROUGH SAID ARTICLE AS THE ANODE AT A CURRENT DENSITY OF ABOUT 2-60 AMPERES PER SQUARE INCH, THEREAFTER DISCONTINUING THE ANODIC TREATMENT AND WHILE SAID ARTICLE IS STILL IMMERSED IN SAID BATH, DEPOSITING ON SAID ARTICLE A NON-POROUS COATING OF ZINC FROM SAID BATH FOR AT LEAST ONE SECOND AND SUBSEQUENTLY ELECTRODEPOSITING A METAL COATING ON THE ZINC-COATED ARTICLE.
Claim 2
Independent Claim
110 words
THE METHOD OF PREPARING AN ALUMINUM BASE ARTICLE FOR THE APPLICATION OF AN ELECTROPLATED COATING WHICH COMPRISES IMMERSING SAID ALUMINUM BASE ARTICLE IN A HOT ELECTROLYTE BATH COMPRISING AN AQUEOUS SOLUTION OF ZINC CYANIDE, AN ALKALI CYANIDE AND AN ALKALI HYDROXIDE, ANODICALLY TREATING THE IMMERSED ARTICLE BY PASSING A DIRECT CURRENT THROUGH SAID ARTICLE AS THE ANODE AT A CURRENT DENSITY OF ABOUT 2-60 AMPERES PER SQUARE INCH, THEREAFTER DISCONTINUING THE ANODIC TREATMENT AND WHILE SAID ARTICLE IS STILL IMMERSED IN SAID BATH, DEPOSITING ON SAID ARTICLE A NON-POROUS COATING OF ZINC FROM SAID BATH FOR AT LEAST ONE SECOND AND SUBSEQUENTLY ELECTRODEPOSITING A METAL COATING ON THE ZINC-COATED ARTICLE.
References Cited (Backward Citations)
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US1147718A
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US1645927A
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US1627900A
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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) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |