US3024141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing magnetic material
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1960-08-02
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Granted: 1962-03-06
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Expires: 1980-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Burket
- 👤 Coy William Clark
- 👤 Lloyd E Peterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:16
CPC Classifications
H; H01; H01F; H01F1/00; C; C22; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN THE PROCESSING OF SUBSTANTIALLY PURE IRON-CABALT ALLOYS IN THE FORM OF STRIP TO OBTAIN A DUCTILE ALLOY, CHARACTERIZED BY THE ALLOY CONTAINING AS IMPURITIES LESS THAN 0.4% MAXIMUM NICKEL AND LESS THAN 0.10% OF OTHER INCIDENTAL ELEMENTS THE STEPS COMPRISING, PREHEATING THE ALLOY IN THE FORM OF COILED STRIP TO A TEMPERATURE IN THE RANGE BETWEEN 1020*F. AND 1120*F. FOR A TIME PERIOD RANGING BETWEEN ABOUT 3 HOURS AND ABOUT 10 HOURS, IN CREASING THE TEMPERATURE OF THE HEAT TREATMENT UNTIL THE TEMPERATURE OF THE ALLOY IS WITHIN THE RANGE BETWEEN ABOUT 1425*F. AND 1475*F., HOLDING THE ALLOY STRIP AT SAID TEMPERATURE RANGE FOR A TIME PERIOD OF BETWEEN 1/2 HOURS AND 3 HOURS, AND WITHDRAWING THE STRIP FROM THE HEAT TREATING FURNACE THROUGH A QUENCHING MEDIUM MAINTAINED AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 30*F. AND 50*F. AT A RATE OF BETWEEN ABOUT 160 AND ABOUT 300 FEET PER MINUTE.
Claim 2
Dependent Claim
153 words
IN THE PROCESSING OF SUBSTANTIALLY PURE IRON-CABALT ALLOYS IN THE FORM OF STRIP TO OBTAIN A DUCTILE ALLOY, CHARACTERIZED BY THE ALLOY CONTAINING AS IMPURITIES LESS THAN 0.4% MAXIMUM NICKEL AND LESS THAN 0.10% OF OTHER INCIDENTAL ELEMENTS THE STEPS COMPRISING, PREHEATING THE ALLOY IN THE FORM OF COILED STRIP TO A TEMPERATURE IN THE RANGE BETWEEN 1020*F. AND 1120*F. FOR A TIME PERIOD RANGING BETWEEN ABOUT 3 HOURS AND ABOUT 10 HOURS, IN CREASING THE TEMPERATURE OF THE HEAT TREATMENT UNTIL THE TEMPERATURE OF THE ALLOY IS WITHIN THE RANGE BETWEEN ABOUT 1425*F. AND 1475*F., HOLDING THE ALLOY STRIP AT SAID TEMPERATURE RANGE FOR A TIME PERIOD OF BETWEEN 1/2 HOURS AND 3 HOURS, AND WITHDRAWING THE STRIP FROM THE HEAT TREATING FURNACE THROUGH A QUENCHING MEDIUM MAINTAINED AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 30*F. AND 50*F. AT A RATE OF BETWEEN ABOUT 160 AND ABOUT 300 FEET PER MINUTE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |