US3366464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating graphite with a refractory coating and products obtained by such method
Assignee: Safran Aircraft Engines SAS
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Filing: 1963-12-12
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Granted: 1968-01-30
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Guichet Lucien Robert
- 👤 Gotoghian Georges Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:34
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; C23; C23C; C23C4/00; C23C4/02; C23C4/04; C23C4/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A ROCKET TUBE HAVING A GRAPHITE SURFACE COATED WITH A PROTECTIVE LAYER OF A REFRACTORY MATERIAL SELECTED FROM THE GROUP CONSISTING OF TANTALUM, ZIRCONIUM, MOLYBDENUM, HAFNIUM, NIOBIUM, TITANIUM AND TUNGSTEN AND THEIR CARBIDES, NITRIDES AND BORIDES ON SAID SURFACE AND A FIXATIVE UNDER-LAYER INTERPOSED BETWEEN SAID SURFACE AND SAID PROTECTIVE LAYER AND MADE OF A MIXTURE OF THE SAID REFRACTORY MATERIAL WITH A METAL CHOSEN FROM THE GROUP CONSISTING OF RUTHENIUM, RHODIUM, PALLADIUM, OSMIUM, IRIDIUM AND PLATINUM WHEREIN THE METAL OF THE LATTER GROUP IS PRESENT IN THE MIXTURE IN AN AMOUNT BETWEEN 1% AND 50% BY MASS OF THE REFRACTORY MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |