US3574572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings for high-temperature alloys
Assignee: RTX Corp
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Filing: 1964-04-14
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Granted: 1971-04-13
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Expires: 1984-04-14
Abstract
Abstract NUM AND CHARACTERIZED BY MEASURABLE DUCTILITY AT USE TEMPERATURES IN EXCESS OF 1500*F. 1. AN ARTICLE OF MANUFACTURE WHICH COMPRISES A CORE OF METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND COLUMBIUM BASE ALLOYS, THE ARTICLE HAVING A DEFECT, SPALLING AND THERMAL AND MECHANICAL SHOCK FAILURE RESISTANT SURFACE ZONE THAT IS OXIDATION RESISTANT AT HIGH TEMPERATURES, THE SURFACE ZONE CONSISTING ESSENTIALLY OF COLUMBIUM SILICIDES MODIFIED BY TITANIUM AND MOLYBDE-
Inventors
- 👤 Leonard A Friedrich
- 👤 Emanuel C Hirakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:05
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12583; Y10T428/1259; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES A CORE OF METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND COLUMBIUM BASE ALLOYS, THE ARTICLE HAVING A DEFECT, SPALLING AND THERMAL AND MECHANICAL SHOCK FAILURE RESISTANT SURFACE ZONE THAT IS OXIDATION RESISTANT AT HIGH TEMPERATURES, THE SURFACE ZONE CONSISTING ESSENTIALLY OF COLUMBIUM SILICIDES MODIFIED BY TITANIUM AND MOLYBDE-
Claim 2
Dependent Claim
56 words
AN ARTICLE OF MANUFACTURE WHICH COMPRISES A CORE OF METAL SELECTED FROM THE GROUP CONSISTING OF COLUMBIUM AND COLUMBIUM BASE ALLOYS, THE ARTICLE HAVING A DEFECT, SPALLING AND THERMAL AND MECHANICAL SHOCK FAILURE RESISTANT SURFACE ZONE THAT IS OXIDATION RESISTANT AT HIGH TEMPERATURES, THE SURFACE ZONE CONSISTING ESSENTIALLY OF COLUMBIUM SILICIDES MODIFIED BY TITANIUM AND MOLYBDE-
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |