US3070439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for processing dispersion strengthened metals
Assignee: New England Materials Lab Inc
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Filing: 1960-03-15
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Granted: 1962-12-25
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Expires: 1980-03-15
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Grant
- 👤 Klaus M Zwilsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:12
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0235; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF PRODUCING A DISPERSION STRENGHENED WROUGHT METAL PRODUCT FROM A MATRIX METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COLBALT, IRON-BASE AND COLBALTBASE METALS OF MELTING POINT ABOVE 1800*F. CHARACTERIZED BY A PHASE TRANSFORMATION TEMPERATURE AT AN ELEVATED HOT WORKING TEMPERATURE AND FROM AN INSOLUBLE REFRACTORY OXIDE DISPERSION HARDENER CHARACTERIZED BY A NEGATIVE FREE ENERGY OF FORMATION AT ABOUT 25*C. OF AT LEAST ABOUT 90,000 CALORIES PER GRAM ATOM OF OXYGEN WHICH COMPRISES, PROVIDING A POWDER MIXTURE COMPRISING SAID MATRIXMETAL AND A SUBSTANTIALLY UNIFORM DISPERSION OF SAID REFRACTORY OXIDE POWDER, FORMING A COMPACT OF SAID MIXTURE, AND HOT DEFORMING SAID COMPACT TO A WROUGHT METAL SHAPED AT AN ELEVATED TEMPERATURE NOT EXCEEDING THE TEMPERATURE AT WHICH THE PHASE TRANSFORMATION OF SAID MATRIX METAL BEGINS, WHEREBY DISSIPATION OF STORED ENERGY IS GREATLY INHIBITED.
Claim 2
Independent Claim
134 words
A METHOD OF PRODUCING A DISPERSION STRENGHENED WROUGHT METAL PRODUCT FROM A MATRIX METAL SELECTED FROM THE GROUP CONSISTING OF IRON, COLBALT, IRON-BASE AND COLBALTBASE METALS OF MELTING POINT ABOVE 1800*F. CHARACTERIZED BY A PHASE TRANSFORMATION TEMPERATURE AT AN ELEVATED HOT WORKING TEMPERATURE AND FROM AN INSOLUBLE REFRACTORY OXIDE DISPERSION HARDENER CHARACTERIZED BY A NEGATIVE FREE ENERGY OF FORMATION AT ABOUT 25*C. OF AT LEAST ABOUT 90,000 CALORIES PER GRAM ATOM OF OXYGEN WHICH COMPRISES, PROVIDING A POWDER MIXTURE COMPRISING SAID MATRIXMETAL AND A SUBSTANTIALLY UNIFORM DISPERSION OF SAID REFRACTORY OXIDE POWDER, FORMING A COMPACT OF SAID MIXTURE, AND HOT DEFORMING SAID COMPACT TO A WROUGHT METAL SHAPED AT AN ELEVATED TEMPERATURE NOT EXCEEDING THE TEMPERATURE AT WHICH THE PHASE TRANSFORMATION OF SAID MATRIX METAL BEGINS, WHEREBY DISSIPATION OF STORED ENERGY IS GREATLY INHIBITED.
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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |