US3806489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite materials having an improved resilience
Assignee: Rhone Progil SA
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Filing: 1973-05-24
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Granted: 1974-04-23
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Expires: 1993-05-24
Abstract
Abstract COMPOSITE MATERIALS HAVING IMPROVED RESILIENCE COMPRISING A CONTINUOUS PHASE OR MATRIX AND REINFORCING MEANS CONTIGUOUS TO AND FIRMLY BONDED TO THE MATRIX, SAID REINFORCING MEANS COMPRISING CARBON FIBERS WHICH HAVE BEEN SIZED WITH ELASTOMER-TYPE EPOXY RESINS.
Inventors
- 👤 J Rieux
- 👤 J Lehureau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:32
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08K; C08K9/00; C08K9/08; D; D01; D01F; D01F11/00; D01F11/10; D01F11/14
Claims Analysis
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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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |