Patent US3087234A successfully refreshed from Google Patents.
US3087234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron group metals having submicron particles of refractory oxides uniformly dispersed therein
Assignee: EIDP Inc
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Filing: 1960-03-14
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Granted: 1963-04-30
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Expires: 1980-03-14
Abstract
No abstract record available.
Inventors
- 👤 Guy B Alexander
- 👤 William H Pasfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:43
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A SINTERED COMPOSITION CONSISTING ESSENTIALLY OF A METALLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, AND NICKEL, AND ALLOYS OF THESE METALS WITH EACH OTHER AND WITH OTHER METALS HAVING AN OXIDE STABLE UP TO 300* C., SAID OXIDE HAVING A FREE ENERGY OF FORMATION AT 27* C. OF FROM 30 TO 70 KCAL. PER GRAM ATOM OF OXYGEN, THE METALLIC COMPONENT HAVING UNIFORMLY DISPERSED THEREIN FROM 0.5 TO 50% BY VOLUME OF FILLER PARTICLES HAVING AN AVERAGE DIMENSION OF 5 TO 1000 MILLIMICRONS, SAID FILLER BEING A REFRACTORY METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000* C. ABOVE 60 KILOCALORIES PER GRAM ATOM OF OXYGEN AND HAVING A MELTING POINT ABOVE 1000* C., THE COMPOSITION HAVING A SURFACE AREA LESS THAN 10 SQUARE METERS PER GRAM AND THE AVERAGE SIZE OF THE GRAINS OF THE METAL BEING LESS THAN 10 MICRONS.
Claim 2
Dependent Claim
146 words
A SINTERED COMPOSITION CONSISTING ESSENTIALLY OF A METALLIC COMPONENT SELECTED FROM THE GROUP CONSISTING OF IRON, COBALT, AND NICKEL, AND ALLOYS OF THESE METALS WITH EACH OTHER AND WITH OTHER METALS HAVING AN OXIDE STABLE UP TO 300* C., SAID OXIDE HAVING A FREE ENERGY OF FORMATION AT 27* C. OF FROM 30 TO 70 KCAL. PER GRAM ATOM OF OXYGEN, THE METALLIC COMPONENT HAVING UNIFORMLY DISPERSED THEREIN FROM 0.5 TO 50% BY VOLUME OF FILLER PARTICLES HAVING AN AVERAGE DIMENSION OF 5 TO 1000 MILLIMICRONS, SAID FILLER BEING A REFRACTORY METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000* C. ABOVE 60 KILOCALORIES PER GRAM ATOM OF OXYGEN AND HAVING A MELTING POINT ABOVE 1000* C., THE COMPOSITION HAVING A SURFACE AREA LESS THAN 10 SQUARE METERS PER GRAM AND THE AVERAGE SIZE OF THE GRAINS OF THE METAL BEING LESS 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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |