US3075848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory compositions
Assignee: Harbison Walker Refractories Co
•
Filing: 1960-12-05
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Granted: 1963-01-29
•
Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Davies Ben
- 👤 Albert L Renkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:52
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B2111/00; C04B2111/20; C04B2111/28; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
REFRACTORY RAMMING AND CASTING COMPOSITIONS FOR MIXING WITH TEMPERING FLUID FOR FABRICATION OF UNFIRED REFRACTORY SHAPES CHARACTERIZED BY HAVING IMPROVED STRENGTH THROUGH LOW AND INTERMEDIATE TEMPERATURE RANGES, AND ON A SOLIDS BASIS CONSISTING ESSENTIALLY OF A DRY MIXTURE OF, BY WEIGHT, 1 TO 5% OF VOLATILIZED SILICA, 1 1/2 TO 5% OF SODIUM SILICATE IN WHICH THE SODA-SILICA RATIO IS WITHIN THE RANGE OF 1.16 TO 1.24, AND THE REMAINDER NON-ACID REFRACTORY AGGREGATE.
Claim 2
Dependent Claim
73 words
REFRACTORY RAMMING AND CASTING COMPOSITIONS FOR MIXING WITH TEMPERING FLUID FOR FABRICATION OF UNFIRED REFRACTORY SHAPES CHARACTERIZED BY HAVING IMPROVED STRENGTH THROUGH LOW AND INTERMEDIATE TEMPERATURE RANGES, AND ON A SOLIDS BASIS CONSISTING ESSENTIALLY OF A DRY MIXTURE OF, BY WEIGHT, 1 TO 5% OF VOLATILIZED SILICA, 1 1/2 TO 5% OF SODIUM SILICATE IN WHICH THE SODA-SILICA RATIO IS WITHIN THE RANGE OF 1.16 TO 1.24, AND THE REMAINDER NON-ACID REFRACTORY AGGREGATE.
References Cited (Backward Citations)
US2571102A
Cited
US2322274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |