US2495837A
Expired / Lapsed
US
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Enameled articles
Assignee: GEORGE N HIBBEN
•
Filing: 1949-04-27
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Granted: 1950-01-31
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Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Frank R Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:13
CPC Classifications
C; C03; C03C; C03C4/00; C23; C23D; C23D5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A LIGHT-COLORED ENAMELED STEEL ARTICLE COMPRISING: (1) A STEEL BASE COMPRISING A KILLED STEEL CONTAINING ALLOYED THEREWITH A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, COLUMBIUM, AND VANDIUM, THE CARBON CONTENT OF SAID STEEL BEING NOT IN EXCESS OF ABOUT 0.15% AND THE WEIGHT RATIO OF ALLOYING METAL TO CARBON PRESENT IN THE STEEL BEING FROM ABOUT 8:1 TO ABOUT 18:1 IN THE CASE OF VANADIUM AND FROM ABOUT 7:1 TO ABOUT 15:1 IN THE CASE OF ZIRCONIUM AND COLUMBIUM, WHEREBY TO PROVIDE SUFFICIENT ALLOYING METAL TO ELIMINATE THE YIELD POINT OF THE STEEL; AND (2) A COAT OF LIGHT-COLORED VITREOUS ENAMEL APPLIED DIRECTLY TO SAID BASE AND CONTAINING AS PART OF THE FRIT A LIGHT-COLORED ADHERENCE PROMOTING OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ANTIMONY, MOLYBDENUM, AND ARSENIC.
Claim 2
Dependent Claim
133 words
A LIGHT-COLORED ENAMELED STEEL ARTICLE COMPRISING: (1) A STEEL BASE COMPRISING A KILLED STEEL CONTAINING ALLOYED THEREWITH A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM, COLUMBIUM, AND VANDIUM, THE CARBON CONTENT OF SAID STEEL BEING NOT IN EXCESS OF ABOUT 0.15% AND THE WEIGHT RATIO OF ALLOYING METAL TO CARBON PRESENT IN THE STEEL BEING FROM ABOUT 8:1 TO ABOUT 18:1 IN THE CASE OF VANADIUM AND FROM ABOUT 7:1 TO ABOUT 15:1 IN THE CASE OF ZIRCONIUM AND COLUMBIUM, WHEREBY TO PROVIDE SUFFICIENT ALLOYING METAL TO ELIMINATE THE YIELD POINT OF THE STEEL; AND (2) A COAT OF LIGHT-COLORED VITREOUS ENAMEL APPLIED DIRECTLY TO SAID BASE AND CONTAINING AS PART OF THE FRIT A LIGHT-COLORED ADHERENCE PROMOTING OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ANTIMONY, MOLYBDENUM, AND ARSENIC.
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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |