US3133820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making foamed ceramic products
Assignee: Johns Manville Corp
•
Filing: 1959-04-07
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Granted: 1964-05-19
•
Expires: 1979-04-07
Abstract
No abstract record available.
Inventors
- 👤 Edward R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:35
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
THE METHOD OF MANUFACTURING A CERAMIC FOAM PRODUCT COMPRISING FORMING A MOLTEN MATERIAL CONSISTING ESSENTIALLY OF A FLUID MIXTURE OF ROM ABOUT 38% TO ABOUT 42% SILICA, FROM ABOUT 16% TO ABOUT 22% ALUMINA, FROM ABOUT 2% TO ABOUT 12% MAGNESIA, AND FROM ABOUT 20% TO ABOUT 40% LIME, FLOWING A THIN STREAM OF THE MOLTEN MATERIAL, ADJUSTING AND EQUALIZING THE TEMPERATURE OF THE STREAM OF THE MOLTEN MATERIAL TO LESS THAN ABOUT 30*F. ABOVE THE LIQUIDS OF THE SIDE MOLTEN MATERIAL, ADDING TO THE STREAM OF THE MOLTEN MATERIAL FROM ABOUT 0.5% TO ABOUT 3% BY WEIGHT THEREOF OF GRANULAR INORGANIC FOAMING AGENT REACTIVE WITH THE MOLTEN MATERIAL AT A TEMPERATURE ABOVE IT FUSION POINT PRODUCING GAS, REACTING AND MIXING THE SAID INORGANIC FOAMING AGENT WITH THE MOLTEN MATERIAL AT A TEMPERATURE WITHIN THE RANGE CONSISTING OF APPROXIMATELY 30*F. ABOVE THE FUSION POINT OF THE SAID MOLTEN MATERIAL AND THEREBY LIBERATING GAS THROUGHOUT THE MOLTEN MATERIAL AND FOAMING THE MASS THEREOF, AND COOLING THE FOAMED MASS TO FORM A CELLULAR CERAMIC PRODUCT.
Claim 2
Independent Claim
173 words
THE METHOD OF MANUFACTURING A CERAMIC FOAM PRODUCT COMPRISING FORMING A MOLTEN MATERIAL CONSISTING ESSENTIALLY OF A FLUID MIXTURE OF ROM ABOUT 38% TO ABOUT 42% SILICA, FROM ABOUT 16% TO ABOUT 22% ALUMINA, FROM ABOUT 2% TO ABOUT 12% MAGNESIA, AND FROM ABOUT 20% TO ABOUT 40% LIME, FLOWING A THIN STREAM OF THE MOLTEN MATERIAL, ADJUSTING AND EQUALIZING THE TEMPERATURE OF THE STREAM OF THE MOLTEN MATERIAL TO LESS THAN ABOUT 30*F. ABOVE THE LIQUIDS OF THE SIDE MOLTEN MATERIAL, ADDING TO THE STREAM OF THE MOLTEN MATERIAL FROM ABOUT 0.5% TO ABOUT 3% BY WEIGHT THEREOF OF GRANULAR INORGANIC FOAMING AGENT REACTIVE WITH THE MOLTEN MATERIAL AT A TEMPERATURE ABOVE IT FUSION POINT PRODUCING GAS, REACTING AND MIXING THE SAID INORGANIC FOAMING AGENT WITH THE MOLTEN MATERIAL AT A TEMPERATURE WITHIN THE RANGE CONSISTING OF APPROXIMATELY 30*F. ABOVE THE FUSION POINT OF THE SAID MOLTEN MATERIAL AND THEREBY LIBERATING GAS THROUGHOUT THE MOLTEN MATERIAL AND FOAMING THE MASS THEREOF, AND COOLING THE FOAMED MASS TO FORM A CELLULAR CERAMIC PRODUCT.
References Cited (Backward Citations)
US1803886A
Cited
US1901891A
Cited
US2381945A
Cited
US2306330A
Cited
US2428249A
Cited
US2514324A
Cited
US2582852A
Cited
US2661575A
Cited
US2590901A
Cited
US2778160A
Cited
US2859138A
Cited
US2920971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |