US3207588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass foam
Assignee: Owens Corning
•
Filing: 1962-03-16
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Granted: 1965-09-21
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Expires: 1982-03-16
Abstract
No abstract record available.
Inventors
- 👤 Slayter Games
- 👤 Roger W Soltis
- 👤 Andrew E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03B; C03B19/00; C03B19/10; C03B19/108; C03B19/1085; C03C11/00; C03C11/007; C03C3/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
THE METHOD OF MAKING GLASS FROM PELLETS WHICH COMPRISES CRUSHING A QUANTITY OF GLASS INTO PARTICLES, SAID GLASS BEING MADE FROM A BATCH CONSISTING ESSENTIALLY OF FROM 40-75% SIO2, 0-20% AL2O3, 5-20% CAO, 0-10% MGO, AND 2-15% B2O3, ADDING 100 PARTS OF THE PARTICLES TO 0.1 TO 10 PARTS OF FLAKE ALUMINUM WHICH IS CAPABLE OF COVERING AT LEAST 10,000 SQUARE CENTIMETERS OF WATER PER GRAM, 1 TO 11 PARTS OF BARYTES, 0.1 TO 8 PARTS OF GYPSUM, AND 0.5 TO 2.5 PARTS OF A BINDER, MIXING AND GRIDING THE INGREDIENTS IN A BALL MILL, ADDING 10-15% OF WATER TO THE RESULTING BATCH, CONCURRENTLY WITH PLACING THE BATCH ON A SLANTED TABLE, ROTATING SAID TABLE WHILE ADDING THE BATCH AND THE WATER THERETO TO CAUSE SAID BATCH TO ROLL INTO PELLETS, CAUSING SAID PELLETS TO ROLL OFF THE ROTATING TABLE AFTER REACHING A DESIRED SIZE, COATING SAID PELLETS WITH TALC, HEATING THE PELLETS IN A HEATED ZONE MAINTAINED AT A TEMPERATURE OF 1750-2100*F. FOR 1/2 TO 2 1/2 MINUTES, AND DISCHARGING THE FOAMED PELLETS FROM THE HEATED ZONE.
Claim 2
Independent Claim
178 words
THE METHOD OF MAKING GLASS FROM PELLETS WHICH COMPRISES CRUSHING A QUANTITY OF GLASS INTO PARTICLES, SAID GLASS BEING MADE FROM A BATCH CONSISTING ESSENTIALLY OF FROM 40-75% SIO2, 0-20% AL2O3, 5-20% CAO, 0-10% MGO, AND 2-15% B2O3, ADDING 100 PARTS OF THE PARTICLES TO 0.1 TO 10 PARTS OF FLAKE ALUMINUM WHICH IS CAPABLE OF COVERING AT LEAST 10,000 SQUARE CENTIMETERS OF WATER PER GRAM, 1 TO 11 PARTS OF BARYTES, 0.1 TO 8 PARTS OF GYPSUM, AND 0.5 TO 2.5 PARTS OF A BINDER, MIXING AND GRIDING THE INGREDIENTS IN A BALL MILL, ADDING 10-15% OF WATER TO THE RESULTING BATCH, CONCURRENTLY WITH PLACING THE BATCH ON A SLANTED TABLE, ROTATING SAID TABLE WHILE ADDING THE BATCH AND THE WATER THERETO TO CAUSE SAID BATCH TO ROLL INTO PELLETS, CAUSING SAID PELLETS TO ROLL OFF THE ROTATING TABLE AFTER REACHING A DESIRED SIZE, COATING SAID PELLETS WITH TALC, HEATING THE PELLETS IN A HEATED ZONE MAINTAINED AT A TEMPERATURE OF 1750-2100*F. FOR 1/2 TO 2 1/2 MINUTES, AND DISCHARGING THE FOAMED PELLETS FROM THE HEATED ZONE.
References Cited (Backward Citations)
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Cited
US2156457A
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US2514324A
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US2582852A
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US2691248A
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US2948948A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |