Patent US2946711A successfully refreshed from Google Patents.
US2946711A
Expired / Lapsed
US
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Safety-glass laminate
Assignee: EIDP Inc
•
Filing: 1957-12-11
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Granted: 1960-07-26
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Expires: 1977-12-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Chester Griswold Bragaw
- 👤 Simeral William Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:06
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10036; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
AN IMPROVED SAFETY-GLASS LAMINATE HAVING A TOTAL THICKNESS OF 0.180 TO 0.370 INCH COMPRISING TWO OUTER LAYERS OF GLASS BONDED TO A CENTRAL LAYER OF PLASTICIZED POLYVINUL BUTYRAL, THE TOTAL THICKNESS OF THE TWO LAYERS OF GLASS BEING FROM 0.100 TO 0.250 INCH AND THE THICKNESS OF SAID CENTRAL LAYER BEING FROM 0.030 TO 0.120 INCH IN THICKNESS SAILD POLYVINYL BUTYRAL HAVING A COMPOSITION OF 15-30% BY WEIGHT BY VINYL ALCOHOL, 0-2% BY WEIGHT OF VINYL ESTER AND THE REMAINDER VINYL BUTYRAL, SAID PLASTICIZED POLYVINYL BUTYRAL CONTAILNING 25-40% BY WEIGHT OF A COMPATIBLE ESTER PLASTICIZER, THE EXACT AMOUNT OF SAID PLASTICIZER BEING THAT AMOUNT WHICH WILL CAUSE THE BREAK HEIGHT AT 0*F. AND AT 120*F. OF SAID LAMINATE TO BE
Claim 2
Dependent Claim
120 words
AN IMPROVED SAFETY-GLASS LAMINATE HAVING A TOTAL THICKNESS OF 0.180 TO 0.370 INCH COMPRISING TWO OUTER LAYERS OF GLASS BONDED TO A CENTRAL LAYER OF PLASTICIZED POLYVINUL BUTYRAL, THE TOTAL THICKNESS OF THE TWO LAYERS OF GLASS BEING FROM 0.100 TO 0.250 INCH AND THE THICKNESS OF SAID CENTRAL LAYER BEING FROM 0.030 TO 0.120 INCH IN THICKNESS SAILD POLYVINYL BUTYRAL HAVING A COMPOSITION OF 15-30% BY WEIGHT BY VINYL ALCOHOL, 0-2% BY WEIGHT OF VINYL ESTER AND THE REMAINDER VINYL BUTYRAL, SAID PLASTICIZED POLYVINYL BUTYRAL CONTAILNING 25-40% BY WEIGHT OF A COMPATIBLE ESTER PLASTICIZER, THE EXACT AMOUNT OF SAID PLASTICIZER BEING THAT AMOUNT WHICH WILL CAUSE THE BREAK HEIGHT AT 0*F. AND AT 120*F. OF SAID LAMINATE TO BE
References Cited (Backward Citations)
US2293656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |