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US3285757A
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Cement composition
Assignee: American Thermocatalytic Corp
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Filing: 1964-05-19
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Granted: 1966-11-15
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Cornely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:48
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A REFRACTORY CEMENT ADAPTED TO BE MIXED WITH WATER FOR USE FOR SERVICES INVOLVING TEMPERATURES IN EXCESS OF ABOUT 4000*F. CONSISTING ESSENTIALLY OF PARTICLES OF A ZIRCONIUM-CONTAINING COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ZIRCONIA, ZIRCON AND MIXTURES OF THE FOREGOING, AND A WATER-SOLUBLE BINDER PRECURSOR SELECTED FROM THE GROUP CONSISTING OF (1) A WATER-SOLUBLE SODIUM SILICATE IN AN AMOUNT OF AT LEAST 8% BY WEIGHT OF THE ZIRCONIUM-CONTAINING COMPOSITION AND HAVING AN NA2O:SIO2 RATIO IN THE RANGE OF 1:3.22-1:3.85, AND (2) A WATERSOLUBLE PHOSPHATE COMPOUND IN AN AMOUNT EQUIVALENT TO 13 TO 13.6 WT. PERCENT P2O5 OF THE ZIRCONIUM-CONTAINING COMPOSITION.
Claim 2
Dependent Claim
101 words
A REFRACTORY CEMENT ADAPTED TO BE MIXED WITH WATER FOR USE FOR SERVICES INVOLVING TEMPERATURES IN EXCESS OF ABOUT 4000*F. CONSISTING ESSENTIALLY OF PARTICLES OF A ZIRCONIUM-CONTAINING COMPOSITION SELECTED FROM THE GROUP CONSISTING OF ZIRCONIA, ZIRCON AND MIXTURES OF THE FOREGOING, AND A WATER-SOLUBLE BINDER PRECURSOR SELECTED FROM THE GROUP CONSISTING OF (1) A WATER-SOLUBLE SODIUM SILICATE IN AN AMOUNT OF AT LEAST 8% BY WEIGHT OF THE ZIRCONIUM-CONTAINING COMPOSITION AND HAVING AN NA2O:SIO2 RATIO IN THE RANGE OF 1:3.22-1:3.85, AND (2) A WATERSOLUBLE PHOSPHATE COMPOUND IN AN AMOUNT EQUIVALENT TO 13 TO 13.6 WT. PERCENT P2O5 OF THE ZIRCONIUM-CONTAINING COMPOSITION.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |