US2537013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory bonding method and refractories produced thereby
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1947-06-20
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Granted: 1951-01-09
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Expires: 1967-06-20
Abstract
No abstract record available.
Inventors
- 👤 Leslie W Austin
- 👤 James C Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/42; C04B35/12; C04B35/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
PROCESS OF PREPARING A SHAPED REFRACTORY COMPOSITION WHICH COMPRISES MIXING IN A BATCH NON-ACID GRAIN MATERIAL CONTAINING NOT MORE THAN 4.0% SILICA AND AS BONDING AGENT FINELY DIVIDED MAGNESIA CONTAINING NOT MORE THAN 4.0% SILICA AND A SOLUTION OF A CHROMIUM COMPOUND IN A TEMPERING AMOUNT OF WATER, SAID CHROMIUM COMPOUND BEING ADDED IN AN AMOUNT FROM THAT WHICH YIELDS 1/8% BY WEIGHT OF CR2O3 IN A TOTAL DRY INGREDIENTS UP TO AN AMOUNT WHICH PROVIDES A SATURATED SOLUTION OF SAID CHROMIUM COMPOUND IN SAID WATER, SAID FINE MAGNESIA BEING ADDED IN AT LEAST AN AMOUNT TO FORM UPON FIRING MAGNESIUM CHROMITE WITH ALL OF SAID SOLUBLE CHROMIUM COMPOUND, AND SHAPING THE BATCH.
Claim 2
Dependent Claim
113 words
PROCESS OF PREPARING A SHAPED REFRACTORY COMPOSITION WHICH COMPRISES MIXING IN A BATCH NON-ACID GRAIN MATERIAL CONTAINING NOT MORE THAN 4.0% SILICA AND AS BONDING AGENT FINELY DIVIDED MAGNESIA CONTAINING NOT MORE THAN 4.0% SILICA AND A SOLUTION OF A CHROMIUM COMPOUND IN A TEMPERING AMOUNT OF WATER, SAID CHROMIUM COMPOUND BEING ADDED IN AN AMOUNT FROM THAT WHICH YIELDS 1/8% BY WEIGHT OF CR2O3 IN A TOTAL DRY INGREDIENTS UP TO AN AMOUNT WHICH PROVIDES A SATURATED SOLUTION OF SAID CHROMIUM COMPOUND IN SAID WATER, SAID FINE MAGNESIA BEING ADDED IN AT LEAST AN AMOUNT TO FORM UPON FIRING MAGNESIUM CHROMITE WITH ALL OF SAID SOLUBLE CHROMIUM COMPOUND, AND SHAPING THE BATCH.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |