US3223504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bending glass sheets
Assignee: PPG Industries Inc
•
Filing: 1963-10-07
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Granted: 1965-12-14
•
Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Cypher James Hershel
- 👤 Valchar Clement Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:57
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/0302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE ART OF BENDING HEAT-SOFTENED GLASS SHEETS WHEREIN A HEAT-SOFTENED GLASS SHEET IS SHAPED BY PRESSURIZED CONTACT BETWEEN A PAIR OF SHAPING MEMBERS HAVING SUBSTANTIALLY COMPLEMENTARY SHPAING SURFACES OPPOSING ONE ANOTHER AND WHEREIN FIBER GLASS FABRIC IS INTERPOSED BETWEEN EACH MAJOR SURFACE OF THE GLASS SHEET AND THE SHAPING MEMBER IT FACES, THE IMPROVEMENT COMPRISING EMPLOYING A WOVEN FIBER GLASS FABRIC OF TEXTURIZED FIBER YARN.
Claim 2
Dependent Claim
66 words
IN THE ART OF BENDING HEAT-SOFTENED GLASS SHEETS WHEREIN A HEAT-SOFTENED GLASS SHEET IS SHAPED BY PRESSURIZED CONTACT BETWEEN A PAIR OF SHAPING MEMBERS HAVING SUBSTANTIALLY COMPLEMENTARY SHPAING SURFACES OPPOSING ONE ANOTHER AND WHEREIN FIBER GLASS FABRIC IS INTERPOSED BETWEEN EACH MAJOR SURFACE OF THE GLASS SHEET AND THE SHAPING MEMBER IT FACES, THE IMPROVEMENT COMPRISING EMPLOYING A WOVEN FIBER GLASS FABRIC OF TEXTURIZED FIBER YARN.
References Cited (Backward Citations)
US2560599A
Cited
US3148968A
Cited
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 |