US3356480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for bending glass sheets
Assignee: PPG Industries Inc
•
Filing: 1963-02-25
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Granted: 1967-12-05
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Golightly James Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:12
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD OF BENDING GLASS IN SHEET FORM TO COMPOUND CURVATURES INCLUDING A LONGITUDINAL BEND OF NONUNIFORM SEVERITY COMPRISING A PAIR OF SPACED, LOCALIZED SEVERLY BENT REGIONS EXTENDING TRANSVERSELY OF THE SHEET AND A TRANSVERSE BEND OF NON-UNIFORM SEVERITY COMPRISING ONLY ONE SEVERLY BENT REGION EXTENDING LONGITUDINALLY OF THE SHEET, SAID METHOD COMPRISING SUPPORTING THE SHEET ALONG ITS MARGINAL PORTION ONLY IN BENDING RELATION TO A SHAPING SURFACE, EXPOSING THE SUPPORTED GLASS SHEET TO GLASS SOFTENING TEMPERATURES BY CONVEYING THE SHEET LATERALLY THROUGH A HOT ATMOSPHERE HAVING A NON-UNIFORM TEMPERATURE PATTERN LONGITUDINALLY OF THE SHEET INCLUDING
Claim 2
Independent Claim
96 words
A METHOD OF BENDING GLASS IN SHEET FORM TO COMPOUND CURVATURES INCLUDING A LONGITUDINAL BEND OF NONUNIFORM SEVERITY COMPRISING A PAIR OF SPACED, LOCALIZED SEVERLY BENT REGIONS EXTENDING TRANSVERSELY OF THE SHEET AND A TRANSVERSE BEND OF NON-UNIFORM SEVERITY COMPRISING ONLY ONE SEVERLY BENT REGION EXTENDING LONGITUDINALLY OF THE SHEET, SAID METHOD COMPRISING SUPPORTING THE SHEET ALONG ITS MARGINAL PORTION ONLY IN BENDING RELATION TO A SHAPING SURFACE, EXPOSING THE SUPPORTED GLASS SHEET TO GLASS SOFTENING TEMPERATURES BY CONVEYING THE SHEET LATERALLY THROUGH A HOT ATMOSPHERE HAVING A NON-UNIFORM TEMPERATURE PATTERN LONGITUDINALLY OF THE SHEET INCLUDING
References Cited (Backward Citations)
US2111392A
Cited
US2348278A
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US2450297A
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US2452488A
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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 |