Patent US3291585A successfully refreshed from Google Patents.
US3291585A
Expired / Lapsed
US
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Method for the treatment of raw glass material containing easily volatilizable ingredients
Assignee: AGC Inc
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Filing: 1963-04-16
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Granted: 1966-12-13
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Expires: 1983-04-16
Abstract
No abstract record available.
Inventors
- 👤 Okamura Tsuneo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:59
CPC Classifications
C; C03; C03B; C03B1/00; C03C; C03C14/00; C03C14/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF REDUCING THE LOSSES OF AN EASILY VOLATILIZABLE INGREDIENT IN THE PREPARATION OF MOLTEN GLASS FROM A GLASS BATCH MIXTURE OF RAW MATERIALS INCLUDING AN ADDITIVE MATERIAL CONTAINING AT LEAST ONE EASILY VOLATILIZABLE INGREDIENT WHICH COMPRISES MIXING PULVERIZED GLASS CULLET WITH 0.05% TO 30% BY WEIGHT OF SAID ADDITIVE MATERIAL, SINTERING THE RESULTING MIXTURE AT A TEMPERATURE BETWEEN 500*C. AND 1200*C., THEN CHARGING THE RESLUTING SINTERED CULLET MATERIAL AND THE REMAINING ADDITIONAL BATCH INGREDIENTS OF THE GLASS BATCH MIXTURE INTO A GLASS MELTING FURNACE AND MELTING THE GLASS BATCH MIXTURE THEREIN.
Claim 2
Independent Claim
93 words
A METHOD OF REDUCING THE LOSSES OF AN EASILY VOLATILIZABLE INGREDIENT IN THE PREPARATION OF MOLTEN GLASS FROM A GLASS BATCH MIXTURE OF RAW MATERIALS INCLUDING AN ADDITIVE MATERIAL CONTAINING AT LEAST ONE EASILY VOLATILIZABLE INGREDIENT WHICH COMPRISES MIXING PULVERIZED GLASS CULLET WITH 0.05% TO 30% BY WEIGHT OF SAID ADDITIVE MATERIAL, SINTERING THE RESULTING MIXTURE AT A TEMPERATURE BETWEEN 500*C. AND 1200*C., THEN CHARGING THE RESLUTING SINTERED CULLET MATERIAL AND THE REMAINING ADDITIONAL BATCH INGREDIENTS OF THE GLASS BATCH MIXTURE INTO A GLASS MELTING FURNACE AND MELTING THE GLASS BATCH MIXTURE THEREIN.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |