US3305337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of flat glass on molten tin
Assignee: Pilkington Group Ltd
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Filing: 1963-07-30
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Granted: 1967-02-21
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Loukes David Gordon
- 👤 Banner John Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:37
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/18; C03C; C03C21/00; C03C21/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM DURING WHICH THE GLASS IS SUPPORTED ON A BATH OF MOLTEN TIN, INHIBITING THE FORMATION OF COMPOUNDS OF THE MOLTEN TIN BY MAINTAINING IN THE BATH AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM, MAGNESIUM, CALCIUM, BARIUM, ALUMINIUM, INDIUM, TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, ZINC, ZIRCONIUM, NIOBIUM, CARBON AND SILICON IN SUFFICIENT QUANTITY FOR OXYGEN AND SULPUR PRESENT AS IMPURITY IN THE BATH TO REACT PREFERENTIALLY WITH SAID ELEMENT, THEREBY TO CONTROL THE MIGRATION OF TIN INTO THE UNDERFACE OF THE RIBBON AS THE RIBBON IS ADVANCED.
Claim 2
Dependent Claim
101 words
IN THE MANUFACTURE OF FLAT GLASS IN RIBBON FORM DURING WHICH THE GLASS IS SUPPORTED ON A BATH OF MOLTEN TIN, INHIBITING THE FORMATION OF COMPOUNDS OF THE MOLTEN TIN BY MAINTAINING IN THE BATH AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM, MAGNESIUM, CALCIUM, BARIUM, ALUMINIUM, INDIUM, TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, ZINC, ZIRCONIUM, NIOBIUM, CARBON AND SILICON IN SUFFICIENT QUANTITY FOR OXYGEN AND SULPUR PRESENT AS IMPURITY IN THE BATH TO REACT PREFERENTIALLY WITH SAID ELEMENT, THEREBY TO CONTROL THE MIGRATION OF TIN INTO THE UNDERFACE OF THE RIBBON AS THE RIBBON IS ADVANCED.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |