Patent US2995468A successfully refreshed from Google Patents.
US2995468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glaze and enamel compositions including lithium fluosilicate and method of making them
Assignee: Stepan Co
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Filing: 1960-03-22
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Granted: 1961-08-08
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Expires: 1980-03-22
Abstract
No abstract record available.
Inventors
- 👤 Leonard W Steiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
C; C03; C03C; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN ENAMELED METALLIC BODY CONSISTING OF A BASE OF METAL UPON WHICH IS APPLIED AT LEAST ONE COAT OF CERAMIC MATERIAL FUSED IN PLACE, AND WHEREIN THE OUTER ONE OF SAID COATS COMPRISES (A) A MATERIAL CAPABLE OF ITSELF FORMING A GLASS AND BEING AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SIO2, B2O3, AS2O5, AS2O3, BEO3, BI2O3, GEO2, P2O5, SB2O5, SB2O3, TA2O5, AND V2O5, (B) AT LEAST ONE NETWORK MODIFIER SELECTED FROM THE GROUP CONSISTING OF ME''2O AND ME"O WHEREIN ME'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF K, NA, LI, RB AND CS AND WHEREIN ME'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF CA, SR, BA, MG, MN, PB AND ZN, AND (C) THE COMPOUND LI2SIF6 INTRODUCED AS SUCH IN AN AMOUNT FROM ABOUT 1/2% TO ABOUT 5% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE OXIDES PRESENT.
Claim 2
Dependent Claim
147 words
AN ENAMELED METALLIC BODY CONSISTING OF A BASE OF METAL UPON WHICH IS APPLIED AT LEAST ONE COAT OF CERAMIC MATERIAL FUSED IN PLACE, AND WHEREIN THE OUTER ONE OF SAID COATS COMPRISES (A) A MATERIAL CAPABLE OF ITSELF FORMING A GLASS AND BEING AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SIO2, B2O3, AS2O5, AS2O3, BEO3, BI2O3, GEO2, P2O5, SB2O5, SB2O3, TA2O5, AND V2O5, (B) AT LEAST ONE NETWORK MODIFIER SELECTED FROM THE GROUP CONSISTING OF ME''2O AND ME"O WHEREIN ME'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF K, NA, LI, RB AND CS AND WHEREIN ME'' IS A METAL SELECTED FROM THE GROUP CONSISTING OF CA, SR, BA, MG, MN, PB AND ZN, AND (C) THE COMPOUND LI2SIF6 INTRODUCED AS SUCH IN AN AMOUNT FROM ABOUT 1/2% TO ABOUT 5% BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE OXIDES PRESENT.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |