US3250604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for protection of glass sheet in contact with metal bath
Assignee: Compagnie de Saint Gobain SA
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Filing: 1962-03-08
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Granted: 1966-05-10
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Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Toytot Robert De
- 👤 Brolmann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/14; C03B35/00; C03B35/14; C03B35/22; C03B35/24; C03B35/246; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A METHOD OF PROTECTING THE FACE OF A GLASS SHEET WHICH IS IN CONTACT WITH A BATH OF MOLTEN METAL, SAID SHEET BEING ADAPTED TO BEW MOVED ACROSS SAID BATH, SAID METHOD COMPRISING INTERRUPTING THE CONTACT BETWEEN SAID FACE AND SAID BATH DURING THE PROGRESS OF SAID SHEET ACROSS SAID BATH FOR A PREDETERMINED SPACE INTERVAL, AND SUFFUSING SAID FACE AT SAID INTERVAL WITH A NON-OXIDIZING GAS.
Claim 2
Independent Claim
67 words
A METHOD OF PROTECTING THE FACE OF A GLASS SHEET WHICH IS IN CONTACT WITH A BATH OF MOLTEN METAL, SAID SHEET BEING ADAPTED TO BEW MOVED ACROSS SAID BATH, SAID METHOD COMPRISING INTERRUPTING THE CONTACT BETWEEN SAID FACE AND SAID BATH DURING THE PROGRESS OF SAID SHEET ACROSS SAID BATH FOR A PREDETERMINED SPACE INTERVAL, AND SUFFUSING SAID FACE AT SAID INTERVAL WITH A NON-OXIDIZING GAS.
Claim 3
Dependent Claim
61 words
APPARATUS FOR THE MANUFACTURE OF SHEET GLASS COMPRISING A TANK ADAPTED TO CONTAIN A BATH OF MOLTEN METAL SUCH AS TIN, MEANS TO MOVE A SHEET GLASS COMFACE OF THE BATH, AND MEANS TO SUFFUSE AT LEAST THE FACE OF SAID SHEET IN CONTACT WITH SAID BATH WITH A NON-OXIDIZING ATMOSPHERE AT AN INTERMEDIATE STAGE OF ITS PROGRESS ACROSS THE BATH.
Claim 4
Dependent Claim
61 words
APPARATUS FOR THE MANUFACTURE OF SHEET GLASS COMPRISING A TANK ADAPTED TO CONTAIN A BATH OF MOLTEN METAL SUCH AS TIN, MEANS TO MOVE A SHEET GLASS COMFACE OF THE BATH, AND MEANS TO SUFFUSE AT LEAST THE FACE OF SAID SHEET IN CONTACT WITH SAID BATH WITH A NON-OXIDIZING ATMOSPHERE AT AN INTERMEDIATE STAGE OF ITS PROGRESS ACROSS THE BATH.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |