Patent US3109211A successfully refreshed from Google Patents.
US3109211A
Expired / Lapsed
US
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Hot top compositions and method of preparing same
Assignee: Columbiana Products Inc
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Filing: 1961-11-16
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Granted: 1963-11-05
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Herbert F Wagner
- 👤 John C Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:09
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/04; B; B22; B22D; B22D7/00; B22D7/06; B22D7/10; B22D7/104; C22B5/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
40 words
A COMBUSTIBLE HOT TOP COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO 60 PARTS BY WEIGHT OF CALCIUM MAGNESIUM CARBONATE, ABOUT 12 TO 18 PARTS BY WEIGHT OF SODIUM SILICATE, AND ABOUT 10 TO 15 PARTS BY WEIGHT OF GROUND WOOD.
Claim 2
Dependent Claim
40 words
A COMBUSTIBLE HOT TOP COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO 60 PARTS BY WEIGHT OF CALCIUM MAGNESIUM CARBONATE, ABOUT 12 TO 18 PARTS BY WEIGHT OF SODIUM SILICATE, AND ABOUT 10 TO 15 PARTS BY WEIGHT OF GROUND WOOD.
Claim 3
Independent Claim
118 words
A METHOD OF PREPARING A HOT TOP WHIHC COMPRISES MIXING IN SEQUENCE AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF APPROXIMATELY 2.5 TO 3.5 PARTS BY WEIGHT OF SODIUM SILICATE WITH ABOUT 50 TO 60 PARTS BY WEIGHT OF CALCIUM MAGNESIUM CARBONATE, ADDING TO THIS MIXTURE 10 TO 16 PARTS BY WEIGHT OF GROUND WOOD, AND FINALLY AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF APPROXIMATELY 10 TO 14 PARTS BY WEIGHT OF SODIUM SILICATE, POURING SAID MIXTURE INTO A MOLD AND HEATING TO A TEMPEATURE UP TO ABOUT 380*F. UNTIL A MAJORITY OF THE WATER IS REMOVED AND THEN LOWERING THE TEMPERATURE TO 360*F., AND FINALLY BELOW 300*F. AFTER ALL OF THE WATER IS SUBSTANTIALLY REMOVED, TO OBTAIN A CURED PRODUCT.
Claim 4
Independent Claim
118 words
A METHOD OF PREPARING A HOT TOP WHIHC COMPRISES MIXING IN SEQUENCE AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF APPROXIMATELY 2.5 TO 3.5 PARTS BY WEIGHT OF SODIUM SILICATE WITH ABOUT 50 TO 60 PARTS BY WEIGHT OF CALCIUM MAGNESIUM CARBONATE, ADDING TO THIS MIXTURE 10 TO 16 PARTS BY WEIGHT OF GROUND WOOD, AND FINALLY AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF APPROXIMATELY 10 TO 14 PARTS BY WEIGHT OF SODIUM SILICATE, POURING SAID MIXTURE INTO A MOLD AND HEATING TO A TEMPEATURE UP TO ABOUT 380*F. UNTIL A MAJORITY OF THE WATER IS REMOVED AND THEN LOWERING THE TEMPERATURE TO 360*F., AND FINALLY BELOW 300*F. AFTER ALL OF THE WATER IS SUBSTANTIALLY REMOVED, TO OBTAIN A CURED PRODUCT.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |