US3695869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of preparing fibrous metal materials and to materials prepared thereby
Assignee: Office National d'Études et de Recherches Aérospatiales
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Filing: 1970-09-18
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Granted: 1972-10-03
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Expires: 1990-09-18
Abstract
Abstract THE INVENTION PROVIDES A METHOD OF PREPARING A FIBROUS METAL MATERIAL, WHICH COMPRISES, FIRSTLY, COVERING AN ELECTRICALLY CONDUCTIVE CARBON SKELETON, HAVING A GENERAL SHAPE CORRESPONDING TO THAT OF THE FINISHED MATERIAL WHICH IT IS DESIRED TO OBTAIN, WITH A DEPOSIT OF A SLIGHTLY ELECTROPOSITIVE METAL OR ALLOY, THE ELECTROPOSITIVITY NOT BEING GREATER THAN 0.7 AND, SECONDLY, ELIMINATING THE AFORE-MENTIONED SKELETON BY OXIDATION AT A HIGH TEMPERATURE LEAVING THE DEPOSITED METAL OR ALLOY ONLY, HAVING A FIBROUS TEXTURE.
Inventors
- 👤 Andre Hivert
- 👤 Pierre Lepetit
- 👤 Andre Walder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:53
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/002; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12424
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |