US2970052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hardening metals
Assignee: General Electric Co
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Filing: 1958-07-07
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Granted: 1961-01-31
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Donald L Wood
- 👤 Gatti Arno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:44
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1078; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
METHOD FOR FORMING A METAL BODY COMPRISING A MATRIX HAVING A SECOND PHASE DISPERSION TO INCREASE THE STREGHT AND RESISTANCE OF THE BODY TO RECRYSTALLIZATION, COMPRISING PREPARING A POWDER MIXTURE CONSISTING OF A COMPOUND OF A MATRIX METAL WITH A NON-METAL SELECTED FROM THE GROUP CONSISTING OF OXYGEN, NITROGEN, CARBON, SILICON AND SULFUR, AND AN ALLOY CONTAINING A MAJOR PROPORTION OF THE MATRIX METAL HAVING A SECOND METAL IN SOLID SOLUTION THEREWITH WHICH HAS A GREATER AFFINITY FOR THE NON-METALLIC PART OF THE MATRIX METAL COMPOUND THAN DOES THE MATRIX METAL, COMPACTING THE MIXTURE TO FORM A BODY, SINTERING THE COMPACTED BODY, AND THERMALLY DISSOCIATING THE MATRIX METAL COMPOUND AND DIFFUSING THE NON-METALLIC PART THEREOF THROUGH THE MATRIX METAL FOR REACTION WITH THE SOLID SOLUTION METAL TO FORM THE SECOND PHASE DISPERSION WITHIN THE MATRIX METAL, SAID SINTERING AND SAID DISSOCIATION AND DIFFUSION BEING EFFECTED IN AN ATMOSPHERE SELECTED FROM THE GROUP CONSISTING OF NEUTRAL ATMOSPHERES AND ATMOSPHERES CONTAINING A PARTIAL PRESSURE OF THE MATRIX METAL COMPOUND.
Claim 2
Dependent Claim
167 words
METHOD FOR FORMING A METAL BODY COMPRISING A MATRIX HAVING A SECOND PHASE DISPERSION TO INCREASE THE STREGHT AND RESISTANCE OF THE BODY TO RECRYSTALLIZATION, COMPRISING PREPARING A POWDER MIXTURE CONSISTING OF A COMPOUND OF A MATRIX METAL WITH A NON-METAL SELECTED FROM THE GROUP CONSISTING OF OXYGEN, NITROGEN, CARBON, SILICON AND SULFUR, AND AN ALLOY CONTAINING A MAJOR PROPORTION OF THE MATRIX METAL HAVING A SECOND METAL IN SOLID SOLUTION THEREWITH WHICH HAS A GREATER AFFINITY FOR THE NON-METALLIC PART OF THE MATRIX METAL COMPOUND THAN DOES THE MATRIX METAL, COMPACTING THE MIXTURE TO FORM A BODY, SINTERING THE COMPACTED BODY, AND THERMALLY DISSOCIATING THE MATRIX METAL COMPOUND AND DIFFUSING THE NON-METALLIC PART THEREOF THROUGH THE MATRIX METAL FOR REACTION WITH THE SOLID SOLUTION METAL TO FORM THE SECOND PHASE DISPERSION WITHIN THE MATRIX METAL, SAID SINTERING AND SAID DISSOCIATION AND DIFFUSION BEING EFFECTED IN AN ATMOSPHERE SELECTED FROM THE GROUP CONSISTING OF NEUTRAL ATMOSPHERES AND ATMOSPHERES CONTAINING A PARTIAL PRESSURE OF THE MATRIX METAL COMPOUND.
References Cited (Backward Citations)
US2852366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |