US2673822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preliminary pressing of bent laminated glass
Assignee: PPG Industries Inc
•
Filing: 1951-08-08
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Granted: 1954-03-30
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Expires: 1971-08-08
Abstract
No abstract record available.
Inventors
- 👤 Brook J Dennison
- 👤 Laurence A Keim
- 👤 William G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:27
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10816; B32B17/10825; B32B17/10834; B32B17/10844; B32B17/10165; B32B17/10293; B32B17/10302; B32B17/10871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE MANUFACTURE OF BENT LAMINATED GLASS AND PLASTIC SHEETS COMPRISING TWO SHEETS OF BENT GLASS WITH A SHEET OF THERMOPLASTIC MATERIAL THEREBETWEEN, THE METHOD OF PRESEALING THE MARGINAL AREA ONLY OF THE ASSEMBLED SHEETS PREPARATORY TO DIRECT IMMERSION IN AN AUTOCLAVE WHERE THEY WILL BE SUBJECTED TO HEAT AND PRESSURE, WHICH METHOD INCLUDES THE STEPS OF ASSAMBLING SAID SHEETS IN SUPERIMPOSED RELATION, EVACUATING AIR
Claim 2
Dependent Claim
65 words
IN THE MANUFACTURE OF BENT LAMINATED GLASS AND PLASTIC SHEETS COMPRISING TWO SHEETS OF BENT GLASS WITH A SHEET OF THERMOPLASTIC MATERIAL THEREBETWEEN, THE METHOD OF PRESEALING THE MARGINAL AREA ONLY OF THE ASSEMBLED SHEETS PREPARATORY TO DIRECT IMMERSION IN AN AUTOCLAVE WHERE THEY WILL BE SUBJECTED TO HEAT AND PRESSURE, WHICH METHOD INCLUDES THE STEPS OF ASSAMBLING SAID SHEETS IN SUPERIMPOSED RELATION, EVACUATING AIR
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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) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |