Patent US2776899A successfully refreshed from Google Patents.
US2776899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic product and body and method of making the same
Assignee: Foote Mineral Co
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Filing: 1953-01-09
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Granted: 1957-01-08
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Expires: 1973-01-09
Abstract
No abstract record available.
Inventors
- 👤 John W Donahey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A CERAMIC BODY ADAPTED FOR USE AS A WHITE WARE CERAMIC PRODUCT CONSISTING ESSENTIALLY OF BETWEEN ABOUT 35 AND 60%, BY WEIGHT, OF CLAY SELECTED FROM THE GROUP CONSISTING OF KAOLIN AND BALL CLAY, BETWEEN ABOUT 20 AND ABOUT 40%, BY WEIGHT, OF A GLASS SELECTED FROM THE GROUP CONSISTING OF THE SILICA-FREE ALKALI ALUMINA PHOSPHATE GLASSES AND ALKALI BORO SILICATE GLASSES CAPABLE OF FLOWING UNDER THEIR OWN WEIGHT AT A TEMPERATURE BETWEEN ABOUT 1000 AND ABOUT 1350*F. AND POSSESSING AN AVERAGE COEFFICIENT OF LINEAR THERMAL EXPANSION OF BETWEEN ABOUT 7.5X10-6 AND ABOUT 17X10-6 INCHES PER INCH PER *C., AND BETWEEN 20 AND ABOUT 40%, BY WEIGHT, OF A FINELY-DIVIDED INORGANIC MATERIAL MELTING ABOVE ABOUT 1500*F. AND UNAFFECTED BY WATER AND BY TEMPERATURE BELOW 1500*F. AND HAVING A LINEAR THERMAL EXPANSION WHICH IS SUBSTANTIALLY CONSTANT, THE COEFFICIENT OF WHICH IS AT LEAST ABOUT 10X10-6 INCHES PER INCH PER *C., SELECTED FROM THE GROUP CONSISTING OF FELDSPAR, CALCINED ALUMINA, TITANIA, TALC, AMORPHOUS SILICA AND NEPHELINE SYENITE.
Claim 2
Dependent Claim
165 words
A CERAMIC BODY ADAPTED FOR USE AS A WHITE WARE CERAMIC PRODUCT CONSISTING ESSENTIALLY OF BETWEEN ABOUT 35 AND 60%, BY WEIGHT, OF CLAY SELECTED FROM THE GROUP CONSISTING OF KAOLIN AND BALL CLAY, BETWEEN ABOUT 20 AND ABOUT 40%, BY WEIGHT, OF A GLASS SELECTED FROM THE GROUP CONSISTING OF THE SILICA-FREE ALKALI ALUMINA PHOSPHATE GLASSES AND ALKALI BORO SILICATE GLASSES CAPABLE OF FLOWING UNDER THEIR OWN WEIGHT AT A TEMPERATURE BETWEEN ABOUT 1000 AND ABOUT 1350*F. AND POSSESSING AN AVERAGE COEFFICIENT OF LINEAR THERMAL EXPANSION OF BETWEEN ABOUT 7.5X10-6 AND ABOUT 17X10-6 INCHES PER INCH PER *C., AND BETWEEN 20 AND ABOUT 40%, BY WEIGHT, OF A FINELY-DIVIDED INORGANIC MATERIAL MELTING ABOVE ABOUT 1500*F. AND UNAFFECTED BY WATER AND BY TEMPERATURE BELOW 1500*F. AND HAVING A LINEAR THERMAL EXPANSION WHICH IS SUBSTANTIALLY CONSTANT, THE COEFFICIENT OF WHICH IS AT LEAST ABOUT 10X10-6 INCHES PER INCH PER *C., SELECTED FROM THE GROUP CONSISTING OF FELDSPAR, CALCINED ALUMINA, TITANIA, TALC, AMORPHOUS SILICA AND NEPHELINE SYENITE.
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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |