US2932584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enameling of aluminum alloys
Assignee: Hospitality Homes
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Filing: 1958-02-28
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Granted: 1960-04-12
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Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Dean S Hubbell
- 👤 Ernest P Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:37
CPC Classifications
C; C03; C03C; C03C8/00; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C23C22/66; C23D; C23D3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
THE PROCESS OF ENAMELING AN ARTICLE COMPOSED OF AN ALUMINUM ALLOY OF THE MAGNESIUM-SILICON SERIES, COMPRISING: CONTACTING THE SURFACE OF SAID ARTICLE WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE, A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF MOLYDBIC OXIDE AND TUNGSTIC OXIDE, AND A BROAD-SPECTRUM CHELATING AGENT EFFECTIVE AT HIGH PH, SAID SOLUTION HAVING A FREE ALKALI CONTENT OF 0.8 TO 2.5 PERCENT BY WEIGHT EXPRESSED AS ALKALI METAL HYDROXIDE, TERMINATING THE CONTACT OF SAID SURFACE WITH SAID SOLUTION UPON DEPOSITION ON SAID SURFACE OF SAID ARTICLE OF FROM 1 MG. TO 12 MG. PER SQ. FT., BASED ON THE WEIGHT OF THE ELEMENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN COMPOUNDS, APPLYING TO SAID SURFACE A VITREOUS ENAMEL SLIP HAVING A MATURING TEMPERATURE BELOW THE SOFTENING TEMPERATURE OF SAID ALLOY, AND FIRING SAID ARTICLE TO FORM A TIGHTLY AND PERMANENTLY ADHERENT VITREOUS COATING THEREON.
Claim 2
Dependent Claim
153 words
THE PROCESS OF ENAMELING AN ARTICLE COMPOSED OF AN ALUMINUM ALLOY OF THE MAGNESIUM-SILICON SERIES, COMPRISING: CONTACTING THE SURFACE OF SAID ARTICLE WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE, A METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF MOLYDBIC OXIDE AND TUNGSTIC OXIDE, AND A BROAD-SPECTRUM CHELATING AGENT EFFECTIVE AT HIGH PH, SAID SOLUTION HAVING A FREE ALKALI CONTENT OF 0.8 TO 2.5 PERCENT BY WEIGHT EXPRESSED AS ALKALI METAL HYDROXIDE, TERMINATING THE CONTACT OF SAID SURFACE WITH SAID SOLUTION UPON DEPOSITION ON SAID SURFACE OF SAID ARTICLE OF FROM 1 MG. TO 12 MG. PER SQ. FT., BASED ON THE WEIGHT OF THE ELEMENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND TUNGSTEN COMPOUNDS, APPLYING TO SAID SURFACE A VITREOUS ENAMEL SLIP HAVING A MATURING TEMPERATURE BELOW THE SOFTENING TEMPERATURE OF SAID ALLOY, AND FIRING SAID ARTICLE TO FORM A TIGHTLY AND PERMANENTLY ADHERENT VITREOUS COATING THEREON.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |