Patent US3770691A successfully refreshed from Google Patents.
US3770691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable composition comprising carbon fibers and a mixture of aliphatically unsaturated imides
Assignee: General Electric Co
•
Filing: 1972-01-31
•
Granted: 1973-11-06
•
Expires: 1992-01-31
Abstract
Abstract A METHOD IS PROVIDED FOR MAKING CURABLE COMPOSITIONS IN THE FORM OF CARBON FIBER PREPREGS OR LAMINATES USING CERTAIN ALIPHATICALLY UNSATURATED IMIDES. THE CURABLE COMPOSITIONS CAN BE CONVERTED BY THE USE OF HEAT AND PRESSURE TO MAKE HIGH STRENGTH COMPOSITES HAVING A PRE-DETERMINED SHAPE.
Inventors
- 👤 Loughlin J Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:13
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/243; C08J2379/00; C08J2379/04; C08J2379/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |