Patent US2697053A successfully refreshed from Google Patents.
US2697053A
Expired / Lapsed
US
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Method of coating a sheet of polyvinyl butyral resin and laminating said sheet between glass plates
Assignee: EIDP Inc
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Filing: 1951-04-25
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Granted: 1954-12-14
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 Gelu S Stamatoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:00
CPC Classifications
B; B32; B32B; B32B27/00; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10899; B32B17/10935; B05; B05D; B05D1/00; B05D1/02; B05D1/18; B05D1/28; B05D2201/00; B05D2252/00; B05D2252/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A PROCESS FOR MAKING SAFETY GLASS, THE STEPS WHICH COMPRISE COATING BOTH SURFACES OF AN INTERLAYER SHEET OF POLYVINYL BUTYRAL RESIN CONTAINING A WATER-INSOLUBLE PLASTICIZER THEREFOR, WITH A LIQUID COMPRISING POLYVINYL BUTYRAL RESIN DISSOLVED IN ETHANOL AND CONTAINING ALSO A PLASTICIZER WHICH IS TH SAME AS THE PLASTICIZER PRESENT IN THE INTERLAYER, CAUSING A SHOWER OF WATER DROPLETS TO IMPINGE FORCIBLY ON THE RESULTING COATED SURFACE, WHEREBY THE COATING REMAINS CONTINUOUS BUT ACQUIRES A ROUGHENED SURFACE, AND THEREAFTER HARDENING THE SAID ROUGHENED SURFACE BY SOAKING IT IN WATER UNTIL THE ETHANOL HAS BEEN LEACHED AWAY THEREFROM, DRYING THE RESULTANT EMBOSSED SHEET AND LAMINATING THE COATED EMBOSED SHEET BETWEEN GLASS PLATES.
Claim 2
Dependent Claim
111 words
IN A PROCESS FOR MAKING SAFETY GLASS, THE STEPS WHICH COMPRISE COATING BOTH SURFACES OF AN INTERLAYER SHEET OF POLYVINYL BUTYRAL RESIN CONTAINING A WATER-INSOLUBLE PLASTICIZER THEREFOR, WITH A LIQUID COMPRISING POLYVINYL BUTYRAL RESIN DISSOLVED IN ETHANOL AND CONTAINING ALSO A PLASTICIZER WHICH IS TH SAME AS THE PLASTICIZER PRESENT IN THE INTERLAYER, CAUSING A SHOWER OF WATER DROPLETS TO IMPINGE FORCIBLY ON THE RESULTING COATED SURFACE, WHEREBY THE COATING REMAINS CONTINUOUS BUT ACQUIRES A ROUGHENED SURFACE, AND THEREAFTER HARDENING THE SAID ROUGHENED SURFACE BY SOAKING IT IN WATER UNTIL THE ETHANOL HAS BEEN LEACHED AWAY THEREFROM, DRYING THE RESULTANT EMBOSSED SHEET AND LAMINATING THE COATED EMBOSED SHEET BETWEEN GLASS PLATES.
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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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |