Patent US3143789A successfully refreshed from Google Patents.
US3143789A
Expired / Lapsed
US
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Dispersion strengthened metal composition
Assignee: EIDP Inc
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Filing: 1962-08-31
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Granted: 1964-08-11
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
- 👤 William H Pasfield
- 👤 Paul C Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:39
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SINTERED, SOLID, WORKED COMPOSITION HAVING AN APPARENT DENSITY WHICH IS FROM 90 TO 100% OF ITS ABSOLUTE DENSITY, THE COMPOSITION CONSISTING ESSENTIALLY OF A UNIFORM DISPERSION, IN METALLIC COPPER, OF A WATER-INSOLUBLE REFRACTORY FILLER, THE FILLER BEING INTHE FORM OF PARTICLES, INSOLUBLE IN COPPER, HAVING AN AVERAGE SIZE IN THE RANGE BELOW 1000 MILLIMICRONS AND A MELTING POINT ABOVE 1000* C. AND BEING A METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000*C. OF FROM 30 TO 150 KCAL. PER MOLE PER OXYGEN ATOM PRESENT, THE VOLUME LOADING FO FILLER IN THE COMPOSITION BEING FROM 0.05 TO 40%, THE FILLER PARTICLES BEING SUBSTANTIALLY AS UNIFORMLY SCATTERED IN THE COPPER IN THE DIRECTION OF WORKING AS IN THE DIRECTION TRANSVERSE THERETO.
Claim 2
Dependent Claim
122 words
A SINTERED, SOLID, WORKED COMPOSITION HAVING AN APPARENT DENSITY WHICH IS FROM 90 TO 100% OF ITS ABSOLUTE DENSITY, THE COMPOSITION CONSISTING ESSENTIALLY OF A UNIFORM DISPERSION, IN METALLIC COPPER, OF A WATER-INSOLUBLE REFRACTORY FILLER, THE FILLER BEING INTHE FORM OF PARTICLES, INSOLUBLE IN COPPER, HAVING AN AVERAGE SIZE IN THE RANGE BELOW 1000 MILLIMICRONS AND A MELTING POINT ABOVE 1000* C. AND BEING A METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000*C. OF FROM 30 TO 150 KCAL. PER MOLE PER OXYGEN ATOM PRESENT, THE VOLUME LOADING FO FILLER IN THE COMPOSITION BEING FROM 0.05 TO 40%, THE FILLER PARTICLES BEING SUBSTANTIALLY AS UNIFORMLY SCATTERED IN THE COPPER IN THE DIRECTION OF WORKING AS IN THE DIRECTION TRANSVERSE THERETO.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |