Patent US3668017A successfully refreshed from Google Patents.
US3668017A
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US
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Tungsten boride-containing articles and production thereof
Assignee: Safran Aircraft Engines SAS
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Filing: 1969-12-05
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Granted: 1972-06-06
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Expires: 1989-12-05
Abstract
Abstract ARTICLES, PREFERABLY OF FLAMENTARY FORM, CONTAINING OR CONSISTING ESSENTIALLY OF TUNGSTEN BORIDE HAVE IMPROVED MECHANICAL PROPERTIES WHEN THE TUNGSTEN BORIDE W2B5 CONSTITUTES AT LEAST 80% OF THE TUNGSTEN BORIDE CONTENT. WHEN THE ARTICLE CONSISTS OF A TUNGSTEN BORIDE CORE WITH AN OUTER LAYER OF BORON, THE LATTER IS PREFERABLY AMORPHOUS.
Inventors
- 👤 Daniel Paul Henri Mandineau
- 👤 Michele Yvonne Christia Mourey
- 👤 Georges Philippe Henri Pizzini
- 👤 Jacques Constant Poulain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:04
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/941
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |