US3785916A
Expired / Lapsed
US
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Thermoplastic compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-11-09
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Granted: 1974-01-15
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Expires: 1991-11-09
Abstract
Abstract A COMPOSITE HAVING AN AROMATIC POLYMER MATRIX REINFORCED BY CARBON FIBRES HAVING LENGTH AT LEAST 2.5 CM.
Inventors
- 👤 C Turton
- 👤 J Mcainsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:34
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; C; C08; C08J; C08J5/00; C08J5/04; C08J5/0405; C08J5/042; B29K; B29K2307/00; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/106; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/2971; Y10T428/298; Y10T442/00; Y10T442/20; Y10T442/2615; Y10T442/2926; Y10T442/2984; Y10T442/30; Y10T442/3472; Y10T442/3528; Y10T442/3594; Y10T442/50; Y10T442/60; Y10T442/659; Y10T442/67
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |