US3152389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal composition
Assignee: EIDP Inc
•
Filing: 1960-05-09
•
Granted: 1964-10-13
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Guy B Alexander
- 👤 Paul C Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSION, IN A METAL HAVING A MELTING POINT ABOUT 1200*C. AND HAVING AN OXIDE WITH A FREE ENERGY OF FORMATION AT 27*C. OF FROM 87 TO 105 KILOCALORIES PER GRAM ATOM OF OXYGEN IN THE OXIDE, OF ABOUT FROM 0.5 TO 30% BY VOLUME OF A REFRACTORY METAL OXIDE WHICH IS STABLE UP TO 1000*C. AND HAS A MELTING POINT ABOVE 1000*C. AND A FREE ENERGY OF FORMATION AT 1000*C. ABOVE AB OUT 100 KILOCALORIES PER GRAM ATOM OF OXYGEN IN THE OXIDE, SAID REFRACTORY OXIDE BEING IN THE FORM OF SUBSTANTIALLY DISCRETE PARTICLES HAVING AN AVERAGE DIMENSION OF 5 TO 500 MILLIMICRONS, THE DISPERSION BEING IN THE FORM OF A SINTERED POWDER, THE PARTICLES OF WHICH HAVE A DENSITY IN THE RANGE OF 80 TO 100 PERCENT OF THEORETICAL DENSITY, HAVE AN OXYGEN CONTENT, IN EXCESS OF OXYGEN IN SAID REFRACTORY METAL OXIDE PARTICLES, OF FROPM 0 TO 2% BY WEIGHT, AND THE METAL IN WHICH IS IN THE FORM OF GRAINS SMALLER THAN 10 MICRONS.
Claim 2
Dependent Claim
173 words
A COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSION, IN A METAL HAVING A MELTING POINT ABOUT 1200*C. AND HAVING AN OXIDE WITH A FREE ENERGY OF FORMATION AT 27*C. OF FROM 87 TO 105 KILOCALORIES PER GRAM ATOM OF OXYGEN IN THE OXIDE, OF ABOUT FROM 0.5 TO 30% BY VOLUME OF A REFRACTORY METAL OXIDE WHICH IS STABLE UP TO 1000*C. AND HAS A MELTING POINT ABOVE 1000*C. AND A FREE ENERGY OF FORMATION AT 1000*C. ABOVE AB OUT 100 KILOCALORIES PER GRAM ATOM OF OXYGEN IN THE OXIDE, SAID REFRACTORY OXIDE BEING IN THE FORM OF SUBSTANTIALLY DISCRETE PARTICLES HAVING AN AVERAGE DIMENSION OF 5 TO 500 MILLIMICRONS, THE DISPERSION BEING IN THE FORM OF A SINTERED POWDER, THE PARTICLES OF WHICH HAVE A DENSITY IN THE RANGE OF 80 TO 100 PERCENT OF THEORETICAL DENSITY, HAVE AN OXYGEN CONTENT, IN EXCESS OF OXYGEN IN SAID REFRACTORY METAL OXIDE PARTICLES, OF FROPM 0 TO 2% BY WEIGHT, AND THE METAL IN WHICH IS IN THE FORM OF GRAINS SMALLER THAN 10 MICRONS.
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |