Patent US2995502A successfully refreshed from Google Patents.
US2995502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning and anodizing system
Assignee: Reynolds Metals Co
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Filing: 1957-10-07
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Granted: 1961-08-08
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Expires: 1977-10-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Ramirez
- 👤 Erik F Barkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:44
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/022; C25D11/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
PROCESS FOR THE MANUFACTURE OF ANODIZED ALUMINUM SHEET, STRIP AND FOIL, WHICH COMPRISES TREATING ONLY THE EDGES AND CONTIGUOUS PORTIONS OF SLIT OR SHEARED ALUMINUM IN HELICAL COIL FORM HAVING ROUGH EDGES IN A STRONG ACID BATH TO REMOVE BURRS AND PROTUBERANCES FROM SAID EDGES, THEN ANODIZING THE EDGES AND CONTIGUOUS PORTIONS OF SAID ALUMINUM IN COIL FORM TO BUILD AN OXID COATING THEREON, THE ADJACENT LAYERS OF ALUMINUM IN SAID COIL BEING IN SUBSTANTIAL CONTACT WITH EACH OTHER AT SAID EDGES AND CONTIGUOUS PORTIONS, AND THEREAFTER ANODIZING SAID ALUMINUM IN UNCOILED FORM TO ESTABLISH AN OXIDE COATING OVER THE ENTIRE SUFACE THEREOF.
Claim 2
Dependent Claim
103 words
PROCESS FOR THE MANUFACTURE OF ANODIZED ALUMINUM SHEET, STRIP AND FOIL, WHICH COMPRISES TREATING ONLY THE EDGES AND CONTIGUOUS PORTIONS OF SLIT OR SHEARED ALUMINUM IN HELICAL COIL FORM HAVING ROUGH EDGES IN A STRONG ACID BATH TO REMOVE BURRS AND PROTUBERANCES FROM SAID EDGES, THEN ANODIZING THE EDGES AND CONTIGUOUS PORTIONS OF SAID ALUMINUM IN COIL FORM TO BUILD AN OXID COATING THEREON, THE ADJACENT LAYERS OF ALUMINUM IN SAID COIL BEING IN SUBSTANTIAL CONTACT WITH EACH OTHER AT SAID EDGES AND CONTIGUOUS PORTIONS, AND THEREAFTER ANODIZING SAID ALUMINUM IN UNCOILED FORM TO ESTABLISH AN OXIDE COATING OVER THE ENTIRE SUFACE THEREOF.
Claim 3
Dependent Claim
67 words
PROCESS FOR THE REMOVAL OF BURRS AND PROTUBERANCES FROM THE EDGES OF SLIT OR SHEARED ALUMINUM SHEET, STRIP AND FOIL, WHICH COMPRISES TREATING THE EDGES AND CONTIGUOUS PORTIONS OF SAID ALUMINUM IN HELICAL COIL FORM IN A STRONG ACID BATH TO RENDER SAID EDGES SUBSTANTIALLY FREE FROM BURRS AND PROTUBERANCES, THE ADJACENT LAYERS OF ALUMINUM IN SAID COIL BEING DIRECTLY IN CONTACT SUBSTANTIALLY OVER THE INTERFACE THEREBETWEEN.
Claim 4
Dependent Claim
67 words
PROCESS FOR THE REMOVAL OF BURRS AND PROTUBERANCES FROM THE EDGES OF SLIT OR SHEARED ALUMINUM SHEET, STRIP AND FOIL, WHICH COMPRISES TREATING THE EDGES AND CONTIGUOUS PORTIONS OF SAID ALUMINUM IN HELICAL COIL FORM IN A STRONG ACID BATH TO RENDER SAID EDGES SUBSTANTIALLY FREE FROM BURRS AND PROTUBERANCES, THE ADJACENT LAYERS OF ALUMINUM IN SAID COIL BEING DIRECTLY IN CONTACT SUBSTANTIALLY OVER THE INTERFACE THEREBETWEEN.
References Cited (Backward Citations)
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US2057315A
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US2374449A
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US2436227A
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US2668936A
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US2863796A
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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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |