Patent US1217543A successfully refreshed from Google Patents.
US2855352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing oxide coating on aluminum and aluminum alloys
Assignee: Sanford Process Co Inc
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Filing: 1954-09-20
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Granted: 1958-10-07
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Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Ernst Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS OF COATING ALUMINUM AND ALUMINUM ALLOYARTICLES WITH A COATING OF OXIDE OF ALUMINUM, WHICH COMPRISES PASSING AN ELECTRIC CURRENT THROUGH AN ELECTROLYTICCELL WITH SAID ARTICLE FORMING THE ANODE, SAID CELL CONTAINING AN ELECTROLYTE COMPRISING AN AQUEOUS SOLUTION OF ANN ELECTRO ANODIZING ACID AS THE MAJOR ACID COMPONENT AND FROM ABOUT 0.02 TO ABOUT 0.10 MOL PER LITER OF ELECTROLYTE SOLUTION OF A COMPOUND OF THE GROUP CONSISTING OF THOSE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
75 words
A PROCESS OF COATING ALUMINUM AND ALUMINUM ALLOYARTICLES WITH A COATING OF OXIDE OF ALUMINUM, WHICH COMPRISES PASSING AN ELECTRIC CURRENT THROUGH AN ELECTROLYTICCELL WITH SAID ARTICLE FORMING THE ANODE, SAID CELL CONTAINING AN ELECTROLYTE COMPRISING AN AQUEOUS SOLUTION OF ANN ELECTRO ANODIZING ACID AS THE MAJOR ACID COMPONENT AND FROM ABOUT 0.02 TO ABOUT 0.10 MOL PER LITER OF ELECTROLYTE SOLUTION OF A COMPOUND OF THE GROUP CONSISTING OF THOSE OF THE GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |