Patent US3445255A successfully refreshed from Google Patents.
US3445255A
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Forehearth addition process for viscosity change
Assignee: OI Glass Inc
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Filing: 1966-08-25
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Granted: 1969-05-20
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Expires: 1986-08-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Monks Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:47
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/083; C03C3/085; C03C3/087; C03C1/00; C03C1/10; C03C1/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A METHOD OF ALTERING THE VISCOSITY OF SODA-LIME GLASS, THE STEPS OF PREPARING A MOLTEN SODA-LIME BASE GLASS, FLOWING THE MOLTEN BASE GLASS THROUGH A FOREHEARTH, ADDING TO THE MOLTEN GLASS IN THE FOREHEARTH AN ALKALINE EARTHALUMINOSILICATE FRIT GLASS, IN AN AMOUNT SUFFICIENT TO PRODUCE A COMPOSITE GLASS HAVING A FASTER SETTING RATE THAN SAID SODA-LIME BASE GLASS.
Claim 2
Dependent Claim
59 words
IN A METHOD OF ALTERING THE VISCOSITY OF SODA-LIME GLASS, THE STEPS OF PREPARING A MOLTEN SODA-LIME BASE GLASS, FLOWING THE MOLTEN BASE GLASS THROUGH A FOREHEARTH, ADDING TO THE MOLTEN GLASS IN THE FOREHEARTH AN ALKALINE EARTHALUMINOSILICATE FRIT GLASS, IN AN AMOUNT SUFFICIENT TO PRODUCE A COMPOSITE GLASS HAVING A FASTER SETTING RATE THAN SAID SODA-LIME BASE GLASS.
References Cited (Backward Citations)
US2955948A
Cited
US3024121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |