US2943008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory articles
Assignee: Electro Refractories and Abrasives Corp
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Filing: 1956-07-17
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Granted: 1960-06-28
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Expires: 1976-07-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
B; B32; B32B; B32B18/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/249957; Y10T428/249967; Y10T428/249969; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A REFRACTORY ARTICLE CONSISTING OF A SILICON CARBIDE LAYER AND A FACING LAYER INTEGRAL THEREWITH, SAID FACING LAYER BEING COMPOSED OF REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA, ZIRCON, ALUMINUM SILICATE CONTAINING OVER 50% AL2O3 BY WEIGHT, AND MIXTURES THEREOF WITH UP TO EQUAL PARTS BY WEIGHT OF SIC, SAID FACING LAYER INCLUDING ALSO THEREIN IN AN AMOUNT FROM 1% UP TO 10% BY WEIGHT OF THE SAID FACING LAYER, A SILICATE GLASS CONTAINING AN OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALKALI AND ALKALINE EARTH METALS AND BORON AND MIXTURES THEREOF.
Claim 2
Dependent Claim
97 words
A REFRACTORY ARTICLE CONSISTING OF A SILICON CARBIDE LAYER AND A FACING LAYER INTEGRAL THEREWITH, SAID FACING LAYER BEING COMPOSED OF REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA, ZIRCON, ALUMINUM SILICATE CONTAINING OVER 50% AL2O3 BY WEIGHT, AND MIXTURES THEREOF WITH UP TO EQUAL PARTS BY WEIGHT OF SIC, SAID FACING LAYER INCLUDING ALSO THEREIN IN AN AMOUNT FROM 1% UP TO 10% BY WEIGHT OF THE SAID FACING LAYER, A SILICATE GLASS CONTAINING AN OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALKALI AND ALKALINE EARTH METALS AND BORON AND MIXTURES THEREOF.
References Cited (Backward Citations)
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US1345377A
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US1653918A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |