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US2516892A
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Refractory concrete
Assignee: Universal Atlas Cement Co
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Filing: 1946-09-17
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Granted: 1950-08-01
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Expires: 1966-09-17
Abstract
No abstract record available.
Inventors
- 👤 Frank E Lobaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:36
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/06; C04B2111/00; C04B2111/00474; C04B2111/00482; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A MIX ADAPTED FOR MAKING REFRACTORY CONCRETE BY THE ADDITON OF WATER COMPRISING FROM 5 TO 60% OF CALCIUM-ALUMINATE CEMENT; FROM 15 TO 93.5% OF AGGREGATE SELECTED FROM THE GROUP CONSISTING OF FIRE-CLAY GROG, CRUSHED BRICK, EXPANDED SHALE, DIATOMACEOUS EARTH AND VERMICULITE; AND FROM .5 TO 25% OF A FRIT HAVING A SOLUBILITY LESS THAN .1% BY WEIGHT IN WATER-CEMENT MIXTURES AND EFFECTIVE TO FORM A VITREOUS BOND WHEN HEATED TO A TEMPERATURE OF 1400*F., SAID FRIT BEING COMPOSED FOR THE MOST PART OF FROM 9 TO 73% SILICON DIOXIDE, FROM 7 TO 38% OF OXIDES OF METALS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND BORON AND FROM 4 TO 25% OF OXIDES OF METALS SELECTED FROM THE GROUP CONSISTING OF POTASSIUM AND SODIUM.
Claim 2
Dependent Claim
125 words
A MIX ADAPTED FOR MAKING REFRACTORY CONCRETE BY THE ADDITON OF WATER COMPRISING FROM 5 TO 60% OF CALCIUM-ALUMINATE CEMENT; FROM 15 TO 93.5% OF AGGREGATE SELECTED FROM THE GROUP CONSISTING OF FIRE-CLAY GROG, CRUSHED BRICK, EXPANDED SHALE, DIATOMACEOUS EARTH AND VERMICULITE; AND FROM .5 TO 25% OF A FRIT HAVING A SOLUBILITY LESS THAN .1% BY WEIGHT IN WATER-CEMENT MIXTURES AND EFFECTIVE TO FORM A VITREOUS BOND WHEN HEATED TO A TEMPERATURE OF 1400*F., SAID FRIT BEING COMPOSED FOR THE MOST PART OF FROM 9 TO 73% SILICON DIOXIDE, FROM 7 TO 38% OF OXIDES OF METALS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND BORON AND FROM 4 TO 25% OF OXIDES OF METALS SELECTED FROM THE GROUP CONSISTING OF POTASSIUM AND SODIUM.
References Cited (Backward Citations)
US1573482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |