US3684645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fiber reinforced thermoplastic article
Assignee: Azdel Inc
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Filing: 1969-03-25
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Granted: 1972-08-15
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Expires: 1989-03-25
Abstract
Abstract A GLASS FIBER STRAND MAT IS COMBINED WITH A THERMOPLASTIC RESIN CONTAINING SHORT GLASS FIBERS TO PRODUCE A THERMOPLASTIC RESINOUS SHEET WHICH IS REFORMABLE INTO VARIOUS SHAPES BY HEAT AND PRESSURE. THE MAT IS FORMED OF RELATIVELY LONG STRANDS BUT DISPOSED RANDOMLY SO AS TO GIVE UNIFORM STRENGTH IN ALL DIRECTIONS IN THE PLANE OF THE SHEET. THE RELATIVELY SHORT GLASS FIBERS IN THE RESIN PROVIDE IMPROVED SURFACE PROPERTIES (ROUGHNESS) AS WELL AS IMPROVED STRENGTH AND HEAT RESISTANCE TO THE FINAL PRODUCT.
Inventors
- 👤 Chester S Temple
- 👤 Jack R Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/081; B29C70/10; B29C70/12; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B29C70/508; B32B5/02; C; C08; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/043; C08J5/06; C08J5/08; B29K; B29K2709/00; B29K2709/08; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2305/00; B32B2305/08; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249946; Y10T428/26; Y10T428/268
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |