US3437553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass laminate
Assignee: EIDP Inc
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Filing: 1966-06-16
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Granted: 1969-04-08
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Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert Burleigh Hailstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10688; B32B17/10761; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
34 words
A SAFETY-GLASS LAMINATE FORMED OF TWO GLASS SHEETS AND HAVING A POLYVINYL BUTYRAL INTERLAYER, WHICH INTERLAYER HAS BEEN SURFACED WITH A SUBSTANTIALLY MONOMOLECULAR LAYER OF A WETTING AGENT SELECTED FROM THE CLASS CONSISTING OF:
References Cited (Backward Citations)
DE1206123B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |