Patent US3676290A successfully refreshed from Google Patents.
US3676290A
Expired / Lapsed
US
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Polyvinyl fluoride surfaced laminates
Assignee: Westinghouse Electric Corp
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Filing: 1969-05-15
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Granted: 1972-07-11
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Expires: 1989-05-15
Abstract
Abstract A WEATHERPROOF OUTDOOR LAMINATE IS MADE FROM A CORE LAYER IMPREGNATED WITH A PHENOLIC RESIN, A PRINT SHEET LAYER IMPREGNATED WITH AN AMINOTRIAZINE-ALDEHYDE RESIN AND AN OUTER POLYVINYL FLUORIDE LAYER HAVING AT LEAST ONE ADHERABLE ACTIVATED SIDE, WHEREIN THE ACTIATED SIDE OF THE POLYVINYL FLUORIDE OUTER LAYER IS BONDED DIRECTLY TO THE PRINT SHEET LAYER WITHOUT THE USE OF AN ADHESIVE LAYER.
Inventors
- 👤 Richard R Hetrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:11
CPC Classifications
B; B32; B32B; B32B27/00; B32B29/00; B32B29/002; B32B29/005; B32B27/06; B32B27/10; B32B27/18; B32B27/20; B32B27/30; B32B27/304; B44; B44C; B44C5/00; B44C5/04; B44C5/0469; B32B2307/00; B32B2307/70; B32B2307/712; B32B2317/00; B32B2317/12; B32B2317/122; B32B2317/125; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/31504; Y10T428/3154; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 0
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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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |