US2782137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of resistor alloys
Assignee: C O JELLIFF MANUFACTURING Corp
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Filing: 1952-11-19
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Granted: 1957-02-19
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Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 John H Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:39
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; C; C22; C22C; C22C19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
THE METHOD OF INCREASING THE ELECTRICAL RESISTIVITY OF AN AGE-HARDENABLE ALLOY COMPOSED PREDOMINANTLY OF NICKEL, CHROMINUM, AND MANGANESE AND CONTAINING THOSE COMPONENTS IN AMOUNTS OF FROM ABOUT 44% TO 70% NICKEL, ABOUT 8% TO 28% CHROMIUM, AND ABOUT 15% TO 36% MANGANESE, WITHOUT DELETERIOUSLY DECREASING THE DUCTILITY THEREOF WHICH COMPRISES SUBJECTING THE ALLOY TO A SOLUTION ANNEALING TREATMENT BY HEATING IT TO A TEMPERATURE IN THE RANGE FROM 1500*F. TO 2100*F., THEN SUBJECTING AT A TEMPERATURE IN THE RANGE FROM 600*F. TO 1200*F. IT AT A TEMPERATURE IN THE RANGE FROM 600*F. TO 1200*F. FOR A PERIOD OF TIME BETWEEN ONE-QUARTER HOUR AND ONE HUNDRED HOURS, AND TERMINATING SAID AGING TREATMENT AT A POINT IN THE REGION OF THE CURVE OF RESISTIVITY VERSUS AGING TIME OF THE ALLOY BEING TREATED AT THE AGING TEMPERATURE BEING USED WHERE SUCH CURVE FIRST BEGINS TO FLATTEN OUT, WHEREBY THE ELECTRICAL RESISTIVITY OF THE ALLOY IS INCREASED TO A VALUE NEAR THE MAXIMUM OBTAINABLE WITHOUT DELETERIOUSLY DECREASING THE DUCTILITY OF THE ALLOY.
Claim 2
Independent Claim
168 words
THE METHOD OF INCREASING THE ELECTRICAL RESISTIVITY OF AN AGE-HARDENABLE ALLOY COMPOSED PREDOMINANTLY OF NICKEL, CHROMINUM, AND MANGANESE AND CONTAINING THOSE COMPONENTS IN AMOUNTS OF FROM ABOUT 44% TO 70% NICKEL, ABOUT 8% TO 28% CHROMIUM, AND ABOUT 15% TO 36% MANGANESE, WITHOUT DELETERIOUSLY DECREASING THE DUCTILITY THEREOF WHICH COMPRISES SUBJECTING THE ALLOY TO A SOLUTION ANNEALING TREATMENT BY HEATING IT TO A TEMPERATURE IN THE RANGE FROM 1500*F. TO 2100*F., THEN SUBJECTING AT A TEMPERATURE IN THE RANGE FROM 600*F. TO 1200*F. IT AT A TEMPERATURE IN THE RANGE FROM 600*F. TO 1200*F. FOR A PERIOD OF TIME BETWEEN ONE-QUARTER HOUR AND ONE HUNDRED HOURS, AND TERMINATING SAID AGING TREATMENT AT A POINT IN THE REGION OF THE CURVE OF RESISTIVITY VERSUS AGING TIME OF THE ALLOY BEING TREATED AT THE AGING TEMPERATURE BEING USED WHERE SUCH CURVE FIRST BEGINS TO FLATTEN OUT, WHEREBY THE ELECTRICAL RESISTIVITY OF THE ALLOY IS INCREASED TO A VALUE NEAR THE MAXIMUM OBTAINABLE WITHOUT DELETERIOUSLY DECREASING THE DUCTILITY OF THE ALLOY.
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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |