Patent US4442468A successfully refreshed from Google Patents.
US2807575A
Expired / Lapsed
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Method of electroplating aluminum
Assignee: Research Corp
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Filing: 1954-07-28
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Granted: 1957-09-24
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Expires: 1974-07-28
Abstract
No abstract record available.
Inventors
- 👤 Curtis S Charlton
- 👤 Nelson F Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:38
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF ELECTROPLATING ALUMINUM ON A BASE OF SUITABLE MATERIAL WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN AN ALUMINUM ANODE AND A CATHODE OF SAID BASE MATERIAL MAINTAINED IN A MOLTEN MIXTURE CONSISTING OF FROM ABOUT 50 TO ABOUT 90 PERCENT ALUMINUM CHLORIDE FROM ABOUT 5 TO ABOUT 50 PERCENT SODIUM CHLORIDE, AND FROM ABOUT 0.05 TO ABOUT 1.0 PERCENT VANADIUM PENTOXIDE AT A CURRENT DENSITY OF FROM ABOUT 5 TO ABOUT 100 AMPERES PER SQUARE FOOT.
Claim 2
Independent Claim
78 words
THE METHOD OF ELECTROPLATING ALUMINUM ON A BASE OF SUITABLE MATERIAL WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN AN ALUMINUM ANODE AND A CATHODE OF SAID BASE MATERIAL MAINTAINED IN A MOLTEN MIXTURE CONSISTING OF FROM ABOUT 50 TO ABOUT 90 PERCENT ALUMINUM CHLORIDE FROM ABOUT 5 TO ABOUT 50 PERCENT SODIUM CHLORIDE, AND FROM ABOUT 0.05 TO ABOUT 1.0 PERCENT VANADIUM PENTOXIDE AT A CURRENT DENSITY OF FROM ABOUT 5 TO ABOUT 100 AMPERES PER SQUARE FOOT.
References Cited (Backward Citations)
US1927772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |