US3703425A
Expired / Lapsed
US
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Method of making transparent laminated structure having transparent interlayer
Assignee: FURANC PLASTICS Inc
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Filing: 1969-04-29
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Granted: 1972-11-21
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Expires: 1989-04-29
Abstract
Abstract LAMINATED SHEETS OF GLASS OR RIGID TRANSPARENT SYNTHETIC PLASTIC SHEETS FOR "SAFETY GLASS" PURPOSES ARE MADE BY CASTING THE INTERLAYER BETWEEN THE RIGID SHEETS, USING CERTAIN LIQUID POLYURETHANE PREPOLYMERS, CURABLE AT LOW TEMPERATURES. THE SPECIFIC POLYURETHANES FOR THIS PURPOSE HAVE HIGH ELASTIC PROPERTIES AND STRONG ADHESION TO THE SURFACES OF THE GLASS OR OTHER TRANSPARENT SHEETS, WHICH REDUCES THE HAZARDS OF FLYING PIECES WHEN THE LAMINATE IS BROKEN BY IMPACT. THE CASTING PROCESS HAS ADVANTAGES IN PERMITTING THE SIMULTANEOUS MAKING OF MARGIN GASKETS AND SEALS, AND THE EMBEDMENT OF MECHANICAL OR DECORATIVE PARTS.
Inventors
- 👤 John Delmonte
- 👤 Paul L Meadows
- 👤 Augusto E Benavides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:41
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/1077; B29; B29C; B29C39/00; B29C39/003; B29C39/02; B29C39/12; B29C39/123; B29C39/126; B29C39/22; B29C39/26; B29C39/32; B29C39/42; B32B17/10807; B32B17/10899; B32B17/10908; B32B17/10917; B29K; B29K2075/00; B29K2995/00; B29K2995/0018; B29K2995/0026; B29L; B29L2031/00; B29L2031/778; B29L2031/7782; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31598; Y10T428/31601
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |