Patent US3195112A successfully refreshed from Google Patents.
US3811997A
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Smoke and flame resistant laminate articles
Assignee: EIDP Inc
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Filing: 1971-03-22
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Granted: 1974-05-21
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Expires: 1991-03-22
Abstract
Abstract SMOKE AND FLAME RESISTANT STRUCTURAL LAMINTE ARTICLES COMPRISED OF A FILM OF AN AROMATIC POLYAMIDE OR POLYIMIDE LAMINATED OVER AN IMPREGNATED FIBROUS REINFORCED CLOTH WHICH MAY OPTIONALLY BE LAMINATED OVER A HONEYCOMB STRUCTURE.
Inventors
- 👤 E Yuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/34; B32B3/00; B32B3/10; B32B3/12; B32B2260/00; B32B2260/02; B32B2260/021; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2379/00; B32B2379/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31551; Y10T428/31623; Y10T428/31678; Y10T428/31681; Y10T428/31725; Y10T428/31779; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/668; Y10T442/669
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) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |