US3342574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of flat glass on improved molten metal bath
Assignee: Pilkington Group Ltd
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Filing: 1964-05-13
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Granted: 1967-09-19
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jewell Ronald Colgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:16
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM, ADVANCING THE GLASS OVER A MOLTEN ALLOY OF TIN AND A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, GOLD, PLATINUM, PALLADIUM AND RHODIUM, WHICH NOBLE METAL IS PRESENT IN AMOUNTS FROM ABOUT 50% TO ABOUT 1% OF THE BATH AND IN A PROPORTION TO FORM A TIN ALLOY HAVING A MELTING POINT BELOW 700*C., AND FORMS AT THE OPERATING TEMPERATURE AN OXIDE WHICH IS MUCH LESS THERMODYNAMICALLY STABLE THAN AN OXIDE OF TIN AND MAINTAINING A PLENUM OF PROTECTIVE ATMOSPHERE OVER THE MOLTEN ALLOY.
Claim 2
Dependent Claim
95 words
IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM, ADVANCING THE GLASS OVER A MOLTEN ALLOY OF TIN AND A NOBLE METAL SELECTED FROM THE GROUP CONSISTING OF SILVER, GOLD, PLATINUM, PALLADIUM AND RHODIUM, WHICH NOBLE METAL IS PRESENT IN AMOUNTS FROM ABOUT 50% TO ABOUT 1% OF THE BATH AND IN A PROPORTION TO FORM A TIN ALLOY HAVING A MELTING POINT BELOW 700*C., AND FORMS AT THE OPERATING TEMPERATURE AN OXIDE WHICH IS MUCH LESS THERMODYNAMICALLY STABLE THAN AN OXIDE OF TIN AND MAINTAINING A PLENUM OF PROTECTIVE ATMOSPHERE OVER THE MOLTEN ALLOY.
References Cited (Backward Citations)
US3083551A
Cited
US3233995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |