US3223549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of glass sheet while deformable and supported on gas
Assignee: PPG Industries Inc
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Filing: 1964-11-09
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Granted: 1965-12-14
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 James C Fredley
- 👤 George E Sleighter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:13
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3607; C03B; C03B29/00; C03B29/04; C03B29/06; C03B29/08; C03B29/12; C03B35/00; C03B35/14; C03B35/22; C03B35/24; C03C17/02; C03C17/06; C03C17/22; C03C17/23; C03C17/25; C03C17/3649; C03C17/3681; C03B2225/00; C03B2225/02; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2217/25; C03C2217/263; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; C03C2218/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A METHOD OF PRODUCING AN ENAMELED GLASS SHEET WHICH COMPRISES APPLYING AN ENAMEL FRIT TO THE GLASS, SUBJECTING THE GLASS AND THE FRIT TO A TEMPERATURE AT WHICH THE GLASS IS DEFORMABLE AND AT WHICH THE FRIT FUSES AND BECOMES BONDED TO THE GLASS, AND AT LEAST PARTIALLY SUPPORTING THE GLASS SHEET THROUGHOUT THE MAJOR PORTION OF THE AREA
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |