Patent US3553820A successfully refreshed from Google Patents.
US3553820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing aluminum-carbon fiber composites
Assignee: BP Corp North America Inc
•
Filing: 1969-05-05
•
Granted: 1971-01-12
•
Expires: 1989-05-05
Abstract
Abstract LIGHT WEIGHT, STRONG COMPOSITE REFRACTORY ARTICLES COMPRISING A PLURALITY OF TANTALUM COATED CARBON FIBERS BONDED TOGETHER BY AN ESSENTIALLY ALUMINUM MATRIX ARE PROVIDED. SUCH COMPOSITE ARTICLES ARE CHARACTERIZED BY A HIGH MODULUS OF ELASTICITY AND ARE ESPECIALLY SUITED AS MATERIALS OF CONSTRUCTION FOR AEROSPACE AND HYDROSPACE VEHICLES AND SYSTEMS.
Inventors
- 👤 Raymond Vincent Sara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:20
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/06; B64C1/12; C; C22; C22C; C22C47/00; C22C47/02; C22C47/04; C22C47/08; C22C49/00; C22C49/14; B22; B22F; B22F2998/00; B64C2001/0054; B64C2001/0072; B64C2001/0081; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10S; Y10S264/00; Y10S264/19; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/49801; Y10T29/4998; Y10T29/49982; Y10T428/00; Y10T428/12; Y10T428/12486
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |