US3711327A
Expired / Lapsed
US
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Plasma arc sprayed modified alumina high emittance coatings for noble metals
Assignee: United States Atomic Energy Commission
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Filing: 1968-01-04
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Granted: 1973-01-16
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Expires: 1988-01-04
Abstract
Abstract A METHOD OF APPLYING A CONTROLLED EMITTANCE TO A NOBLE METAL SELECTED FROM THE GROUP INCLUDING RUTHENIUM, ROBDIUM, PALLADIUM, OSMIUM, IRIDIUM AND PLATINUM, AND INTRA-ALLOYS THEREOF. THE COATING IS APPLIED BY PLASMA ARC SPRAYING MODIFIED ALUMINA ON A SURFACE OF ONE OF THE NOBLE METALD S G OUP, THE ALUMINA BEING MODIFIED BY HAVING ALUMINA POWDER CONTAIN A DISPERSION OF A NOBLE METAL BLACK SELECTED FROM THE ABOVE GROUP. A CLADDING OF ONE OF THE GROUP OF NOBLE METALS ABOVE, HAVING A LAYER OF PLASMA ARC SPRAYED MODIFIED ALUMINA BONDED ON AT LAST ONE SURFACE THEREOF, THE ALUMINA BEING MODIFIED AS INDICATED IN THE ABOVE METHOD.
Inventors
- 👤 J Ogren
- 👤 J Blumenthal
- 👤 D Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:15
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/10; C23C4/11; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12472; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/26; Y10T428/31504; Y10T428/31678
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |