US3159908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersion hardened metal product and process
Assignee: EIDP Inc
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Filing: 1963-02-26
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Granted: 1964-12-08
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Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederic J Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0026; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
IN A PROCESS FOR INCREASING THE ULTIMATE TENSILE, YIELD, AND STRESS-RUPTURE STRENGTHS OF A METAL, AS MEASURE AT 73% OF ITS ABSOLUTE MELTING POINT, THE STEP COMPRISING EFFECTING A 40 TO 95% REDUCTION IN A CROSS-SECTIONAL AREA OF A BODY OF SAID METAL, HAVING A DENSITY SUBSTANTIALLY 100% OF THEORETICAL, BY MECHANICALLY WORKING IT AT A TEMPERATURE NOT HIGHER THAN 1/2 OF THE ABSOLUTE MELTING POINT OF THE METAL, THE METAL IN SAID BODY HAVING AN ATOMIC NUMBER OF 22 TO 74, A MELTING POINT ABOVE 1100*C., AND AN OXIDE WITH A FREE ENERGY OF FORMATION AT 27*C. OF FROM 30 TO 105 KCAL. PER GRAM ATOMS OF OXYGEN IN THE OXIDE, SAID METAL HAVING UNIFORMLY DISPERSED THEREIN FROM 0.1 TO 10 VOLUME PERCENT OF APRTICLES, 5 TO 1000 MILLIMICRONS IN AVERAGE SIZE, OF A REFRACTORY METAL OXIDE INSOLUBLE IN THE METAL, THE OXIDE HAVING A FREE ENERGY OF FROMATION, MEASURED AT 1000*C., GREATER THAN 60 KILOCALORIES PER GRAM ATOM OF OXYGEN.
Claim 2
Dependent Claim
162 words
IN A PROCESS FOR INCREASING THE ULTIMATE TENSILE, YIELD, AND STRESS-RUPTURE STRENGTHS OF A METAL, AS MEASURE AT 73% OF ITS ABSOLUTE MELTING POINT, THE STEP COMPRISING EFFECTING A 40 TO 95% REDUCTION IN A CROSS-SECTIONAL AREA OF A BODY OF SAID METAL, HAVING A DENSITY SUBSTANTIALLY 100% OF THEORETICAL, BY MECHANICALLY WORKING IT AT A TEMPERATURE NOT HIGHER THAN 1/2 OF THE ABSOLUTE MELTING POINT OF THE METAL, THE METAL IN SAID BODY HAVING AN ATOMIC NUMBER OF 22 TO 74, A MELTING POINT ABOVE 1100*C., AND AN OXIDE WITH A FREE ENERGY OF FORMATION AT 27*C. OF FROM 30 TO 105 KCAL. PER GRAM ATOMS OF OXYGEN IN THE OXIDE, SAID METAL HAVING UNIFORMLY DISPERSED THEREIN FROM 0.1 TO 10 VOLUME PERCENT OF APRTICLES, 5 TO 1000 MILLIMICRONS IN AVERAGE SIZE, OF A REFRACTORY METAL OXIDE INSOLUBLE IN THE METAL, THE OXIDE HAVING A FREE ENERGY OF FROMATION, MEASURED AT 1000*C., GREATER THAN 60 KILOCALORIES PER GRAM ATOM OF OXYGEN.
Claim 3
Dependent Claim
149 words
A WROUGHT METAL COMPOSITION CHRACTERIZED BY HAVING A DENSITY SUBSTANTIALLY 100% OF THEORECITCAL AND HAVING HIGH ULTIMATE TENSILE, YIELD, AND STRESS-RUPTURE STRENGTHS AS MEASURED AT 73% OF ITS ABSOLUTE MELTING POINT, THE COMPOSITION COMPRISING (1) A METAL HAVING AN ATOMIC NUMBER OF 2I TO 74, A MELTING POINT ABOVE 1100*C., AND AN OXIDE WITH A FREE ENERGY OF FROMATION AT 27*C. OF FROM 30 TO 105 KCAL. PER GRAM ATOM OF OXYGEN IN THE OXIDE, SAID METAL ALSO HAVING ANORIENTED CRYSTAL STRUCTURE, THE ORIENTATION BEING IRREVERSIBLE AT TEMPERATURES BELOW 85% OF THE ABSOLUTE MELTING POINT OF THE METAL, AND (2) UNIFORMLY DISPERSED IN SAID METAL, FROM 0.1 TO 10 VOLUME PERCENT OF PARTICLES, 5 TO 1000 MILLIMICRONS IN AVERAGE SIZE, OF A REFRACTORY METAL OXIDE INSOLUBLE IN THE METAL, THE OXIDE HAVING A FREE ENERGY OF FORMATION, MEASURED AT 1000*C., GREATER THAN 60 KILOCALORIES PER GRAM ATOM OF OXYGEN.
Claim 4
Dependent Claim
149 words
A WROUGHT METAL COMPOSITION CHRACTERIZED BY HAVING A DENSITY SUBSTANTIALLY 100% OF THEORECITCAL AND HAVING HIGH ULTIMATE TENSILE, YIELD, AND STRESS-RUPTURE STRENGTHS AS MEASURED AT 73% OF ITS ABSOLUTE MELTING POINT, THE COMPOSITION COMPRISING (1) A METAL HAVING AN ATOMIC NUMBER OF 2I TO 74, A MELTING POINT ABOVE 1100*C., AND AN OXIDE WITH A FREE ENERGY OF FROMATION AT 27*C. OF FROM 30 TO 105 KCAL. PER GRAM ATOM OF OXYGEN IN THE OXIDE, SAID METAL ALSO HAVING ANORIENTED CRYSTAL STRUCTURE, THE ORIENTATION BEING IRREVERSIBLE AT TEMPERATURES BELOW 85% OF THE ABSOLUTE MELTING POINT OF THE METAL, AND (2) UNIFORMLY DISPERSED IN SAID METAL, FROM 0.1 TO 10 VOLUME PERCENT OF PARTICLES, 5 TO 1000 MILLIMICRONS IN AVERAGE SIZE, OF A REFRACTORY METAL OXIDE INSOLUBLE IN THE METAL, THE OXIDE HAVING A FREE ENERGY OF FORMATION, MEASURED AT 1000*C., GREATER THAN 60 KILOCALORIES PER GRAM ATOM OF OXYGEN.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |