US2963409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible anodic coating
Assignee: Reynolds Metals Co
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Filing: 1957-10-07
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Granted: 1960-12-06
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Expires: 1977-10-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Ramirez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:56
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF FORMING AN ANODIC COATING OF HIGH FLEXIBILITY AND DIELECTRIC STRENGTH UPON AN ALUMINUM SURFACE WHICH COMPRISES IMMERSING THE ALUMINUM AS ANODE IN AN AQUEOUS ACID ANODIZING ELECTROLYTE CONSISTING ESSENTIALLY OF A MINERAL ACID AND FROM ABOUT 0.1% TO ABOUT 10% BY WEIGHT OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HALIDES AND FROM ABOUT 0.2% BY WEIGHT TO A PERCENTAGE REPRESENTED BY THE LIMIT OF ITS SOLUBILITY THEREIN OF AN ALIPHATIC DICARBOXYLIC ACID OF FROM 2 TO 5 CARBON ATOMS, AND PASSING A CURRENT THROUGH SAID ELECTROLYTE AT A CURRENT DENSITY ABOVE ABOUT 200 AMPERES PER SQUARE FOOT.
Claim 2
Independent Claim
109 words
THE METHOD OF FORMING AN ANODIC COATING OF HIGH FLEXIBILITY AND DIELECTRIC STRENGTH UPON AN ALUMINUM SURFACE WHICH COMPRISES IMMERSING THE ALUMINUM AS ANODE IN AN AQUEOUS ACID ANODIZING ELECTROLYTE CONSISTING ESSENTIALLY OF A MINERAL ACID AND FROM ABOUT 0.1% TO ABOUT 10% BY WEIGHT OF A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HALIDES AND FROM ABOUT 0.2% BY WEIGHT TO A PERCENTAGE REPRESENTED BY THE LIMIT OF ITS SOLUBILITY THEREIN OF AN ALIPHATIC DICARBOXYLIC ACID OF FROM 2 TO 5 CARBON ATOMS, AND PASSING A CURRENT THROUGH SAID ELECTROLYTE AT A CURRENT DENSITY ABOVE ABOUT 200 AMPERES PER SQUARE FOOT.
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |