Patent US2188896A successfully refreshed from Google Patents.
US2949358A
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US
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Reinforced heat resistant refractorymetal alloys
Assignee: EIDP Inc
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Filing: 1957-09-23
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Granted: 1960-08-16
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Guy B Alexander
- 👤 Paul C Yates
- 👤 Sherwood F West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:13
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1026; Y; Y10; Y10S; Y10S75/00; Y10S75/956; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A COMPOSITION CONSISTING ESSENTAILLY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, RHENIUM, AND TUNGSTEN, HAVING UNIFORMLY DISPERSED THEREIN SUB-MICRON SIZED PARTICLES OF A REFRACTORY METAL OXIDE HAVING A METALING POINT ABOVE 1000*C. AND A FREE ENERGY OF FORMATION OF 1000*C. OF FROM 60 TO 150 KILKOGRAM CALORIES PER GRAM ATOM OF OXYGEN.
Claim 2
Dependent Claim
55 words
A COMPOSITION CONSISTING ESSENTAILLY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, RHENIUM, AND TUNGSTEN, HAVING UNIFORMLY DISPERSED THEREIN SUB-MICRON SIZED PARTICLES OF A REFRACTORY METAL OXIDE HAVING A METALING POINT ABOVE 1000*C. AND A FREE ENERGY OF FORMATION OF 1000*C. OF FROM 60 TO 150 KILKOGRAM CALORIES PER GRAM ATOM OF OXYGEN.
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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) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |