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US3753666A
Expired / Lapsed
US
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Noble metals having a high emittance coating of iron titanate
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1967-12-04
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Granted: 1973-08-21
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Expires: 1987-12-04
Abstract
Abstract A method of applying a high-emittance coating to the noble metals and intra-alloys thereof, the coating being applied by plasma arc spraying iron titanate powder on the surface of the noble metal. A substrate of a noble metal or intra-alloy thereof having a high emittance coating of iron titanate bonded thereon.
Inventors
- 👤 D Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:56
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/10; C23C4/11; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12861; Y10T428/12875
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
The invention according to claim 1 in which: said iron titanate coating has been plasma arc sprayed on said metal.
Claim 2
Dependent Claim
19 words
The invention according to claim 1 in which: said coating has a thickness of at least approximately 1.0 mil.
Claim 3
Dependent Claim
33 words
The invention according to claim 1 in which: said coated metal has a hemispherical emittance range of approximately 0.82 to 0.86 in the temperature range of from 1, 600* F to 2,400* F.
Claim 4
Dependent Claim
60 words
A refractory metal having a high emittance cladding comprising: A. a refractory metal selected from the group consisting of vanadium, niobium, tantalum, chromium, molybdenum, tungsten, and rhenium on which is clad B. a noble metal selected from the group consisting of ruthenium, rhodium,palladium, osmium, iridium, and platinum and intraalloys thereof, said noble metal having a coating of C. iron titanate.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |