Patent US2677624A successfully refreshed from Google Patents.
US2677624A
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US
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Method of enameling sheets
Assignee: United States Steel Corp
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Filing: 1950-12-06
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Granted: 1954-05-04
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Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Eckel
- 👤 Harold F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:21
CPC Classifications
C; C23; C23D; C23D3/00; C23D5/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF MAKING ENAMELED ARTICLES COMPRISING ALLOYING .05 TO .10% PHOSPHORUS WITH .03% MAXIMUM CARBON STEEL, COLD ROLLING BANDS OF SAID STEEL TO THE DESIRED GAUGE, BOX ANNEALING SAID BANDS AT A TEMPERATURE BETWEEN 1550 AND 1650* F., CUTTING SAID BANDS INTO SHEETS, FORMING SAID SHEETS INTO THE DESIRED FORM, COATING SAID FORMED ARTICLES WITH ENAMEL FRIT AND FIRING THE COATED ARTICLES TO FUSE SAID FRIT.
Claim 2
Independent Claim
67 words
A METHOD OF MAKING ENAMELED ARTICLES COMPRISING ALLOYING .05 TO .10% PHOSPHORUS WITH .03% MAXIMUM CARBON STEEL, COLD ROLLING BANDS OF SAID STEEL TO THE DESIRED GAUGE, BOX ANNEALING SAID BANDS AT A TEMPERATURE BETWEEN 1550 AND 1650* F., CUTTING SAID BANDS INTO SHEETS, FORMING SAID SHEETS INTO THE DESIRED FORM, COATING SAID FORMED ARTICLES WITH ENAMEL FRIT AND FIRING THE COATED ARTICLES TO FUSE SAID FRIT.
References Cited (Backward Citations)
US1857215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |