US3114646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single coat porcelain enamel
Assignee: Foote Mineral Co
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Filing: 1960-05-16
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Granted: 1963-12-17
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Currie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:22
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/06; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C4/00; C03C2204/00; C03C2204/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
A VITREOUS ENAMEL COMPOSITION HAVING A FIRING TEMPERATURE BETWEEN ABOUT 1125 AND ABOUT 1275*F., SUITABLE FOR APPLICATION TO THE SURFACE OF SHEET STEELS, COMPRISING A FRT CONSISTING ESSENTIALLY OF FROM ABOUT 20 TO ABOUT 30 WEIGHT PERCENT SILICA; FROM ABOUT 20 TO ABOUT 25 WEIGHT PERCENT OF R2O3 OXIDES CONSISTING OF B2O3 AND AL2O3, SAID AL2O3 PROVIDING FROM ABOUT 10 TO ABOUT 25 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O3 OXIDES; FROM ABOUT 15 TO ABOUT 25 WEIGHT PERCENT OF R2O OXIDES CONSISTING OF LI2O8 NA2O AND K2O, SAID LI2O PROVIDING FROM ABOUT 10 TO ABOUT 25 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O OXIDES AND SAID K2O PROVIDING FROM ABOUT 40 TO ABOUT 60 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O OXIDES; FROM ABOUT 1 TO ABOUT 10 WEIGHT PERCENT OF ZNO; FROM ABOUT 5 TO ABOUT 10 WEIGHT PERCENT OF ALKALINE EARTH OXIDE SELECTED FROM THE GROUP CONSISTING OF SRO AND A MIXTURE OF CAO AND MGO, SAID MGO PROVIDING FROM ABOUT 20 TO ABOUT 50% OF THE WEIGHT OF SAID WEIGHT PERCENT OF ALKALINE EARTH OXIDE; FLUORINE, IN THE AMOUNT OF FROM ABOUT 2 TO ABOUT 5 WEIGHT PERCENT WHERE SAID FLUORIDE IS CALCULATED AS CALCIUM FLUORIDE; AND FORM ABOUT 10 TO ABOUT 18 WEIGHT PERCENT OF TITANIA; IN WHICH THE MOLAR RATIONS OF SAID FRIT COMPONENTS TO ONE ANOTHER ARE SUBSTANTIALLY
Claim 2
Dependent Claim
234 words
A VITREOUS ENAMEL COMPOSITION HAVING A FIRING TEMPERATURE BETWEEN ABOUT 1125 AND ABOUT 1275*F., SUITABLE FOR APPLICATION TO THE SURFACE OF SHEET STEELS, COMPRISING A FRT CONSISTING ESSENTIALLY OF FROM ABOUT 20 TO ABOUT 30 WEIGHT PERCENT SILICA; FROM ABOUT 20 TO ABOUT 25 WEIGHT PERCENT OF R2O3 OXIDES CONSISTING OF B2O3 AND AL2O3, SAID AL2O3 PROVIDING FROM ABOUT 10 TO ABOUT 25 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O3 OXIDES; FROM ABOUT 15 TO ABOUT 25 WEIGHT PERCENT OF R2O OXIDES CONSISTING OF LI2O8 NA2O AND K2O, SAID LI2O PROVIDING FROM ABOUT 10 TO ABOUT 25 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O OXIDES AND SAID K2O PROVIDING FROM ABOUT 40 TO ABOUT 60 PERCENT OF THE WEIGHT OF SAID WEIGHT PERCENT OF R2O OXIDES; FROM ABOUT 1 TO ABOUT 10 WEIGHT PERCENT OF ZNO; FROM ABOUT 5 TO ABOUT 10 WEIGHT PERCENT OF ALKALINE EARTH OXIDE SELECTED FROM THE GROUP CONSISTING OF SRO AND A MIXTURE OF CAO AND MGO, SAID MGO PROVIDING FROM ABOUT 20 TO ABOUT 50% OF THE WEIGHT OF SAID WEIGHT PERCENT OF ALKALINE EARTH OXIDE; FLUORINE, IN THE AMOUNT OF FROM ABOUT 2 TO ABOUT 5 WEIGHT PERCENT WHERE SAID FLUORIDE IS CALCULATED AS CALCIUM FLUORIDE; AND FORM ABOUT 10 TO ABOUT 18 WEIGHT PERCENT OF TITANIA; IN WHICH THE MOLAR RATIONS OF SAID FRIT COMPONENTS TO ONE ANOTHER ARE SUBSTANTIALLY
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |