US3356476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing contaminates from the protective atmosphere of a glass sheet float bath
Assignee: PPG Industries Inc
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Filing: 1965-02-08
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Granted: 1967-12-05
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Gulotta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:09
CPC Classifications
C; C03; C03B; C03B18/00; C03B18/02; C03B18/20; Y; Y02; Y02P; Y02P40/00; Y02P40/50; Y02P40/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE METHOD OF PRODUCING GLASS WHEREIN A MASS OF GLASS IS SUPPORTED ON A BATH OF MOLTEN METAL OVER WHICH A PROTECTIVE ATMOSPHERE IS MAINTAINED, WHICH ATMOSPHERE BECOMES CONTAIMINATED WITH GASEOUS CONTAMINATES, THE IMPROVEMENT COMPRISING: WITHDRAWING A SUBSTANTIAL PORTION OF SAID CONTAMINATED ATMOSPHERE FROM OVER SAID BATH, COOLING THE WITHDRAWN ATMOSPHERE FOR A TIME SUFFICIENT TO CONDENSE CONTAMINATES THEREIN. REMOVING THE CONDENSED CONTAMINATES FROM SAID WITHDRAWN ATMOSPHERE TO CLEAN SAID WITHDRAWN ATMOSPHERE, AND THEREAFTER REINTRODUCTING SAID COOLED AND CLEANED PROTECTIVE ATMOSPHERE OVER SAID BATH OF MOLTEN METAL.
Claim 2
Dependent Claim
88 words
IN THE METHOD OF PRODUCING GLASS WHEREIN A MASS OF GLASS IS SUPPORTED ON A BATH OF MOLTEN METAL OVER WHICH A PROTECTIVE ATMOSPHERE IS MAINTAINED, WHICH ATMOSPHERE BECOMES CONTAIMINATED WITH GASEOUS CONTAMINATES, THE IMPROVEMENT COMPRISING: WITHDRAWING A SUBSTANTIAL PORTION OF SAID CONTAMINATED ATMOSPHERE FROM OVER SAID BATH, COOLING THE WITHDRAWN ATMOSPHERE FOR A TIME SUFFICIENT TO CONDENSE CONTAMINATES THEREIN. REMOVING THE CONDENSED CONTAMINATES FROM SAID WITHDRAWN ATMOSPHERE TO CLEAN SAID WITHDRAWN ATMOSPHERE, AND THEREAFTER REINTRODUCTING SAID COOLED AND CLEANED PROTECTIVE ATMOSPHERE OVER SAID BATH OF MOLTEN METAL.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |