Patent US2622050A successfully refreshed from Google Patents.
US2622050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for heat-treating cobalt-platinum magnets
Assignee: General Electric Co
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Filing: 1951-03-22
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Granted: 1952-12-16
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Expires: 1971-03-22
Abstract
No abstract record available.
Inventors
- 👤 Martin Donald Luther
- 👤 Alfred H Geisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:35
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF TREATING A COBALT-PLATNIUM ALLOY CONTAINING FROM 17 TO 23.5 WEIGHT PERCENT COBALT, BALANCE PLATINUM, TO OBTAIN A HIGH ENERGY, HIGH COERCIVE FORCE MAGNETIC MATERIAL, WHICH METHOD COMPRISES SUBJECTING SAID ALLOY TO A DISORDERING TREATMENT BY HEATING AT A TEMPERATURE OF AT LEAST 850* C., COOLING THE ALLOY TO A TEMPERATURE NOT EXCEEDING 300* C. AT A RATE OF FROM 0.5 TO 50* C. PER SECOND, AND ANNEALING THE ALLOY AT A TEMPERATURE OF 550 TO 650* C. FOR FROM 2 TO 50 HOURS.
Claim 2
Independent Claim
86 words
THE METHOD OF TREATING A COBALT-PLATNIUM ALLOY CONTAINING FROM 17 TO 23.5 WEIGHT PERCENT COBALT, BALANCE PLATINUM, TO OBTAIN A HIGH ENERGY, HIGH COERCIVE FORCE MAGNETIC MATERIAL, WHICH METHOD COMPRISES SUBJECTING SAID ALLOY TO A DISORDERING TREATMENT BY HEATING AT A TEMPERATURE OF AT LEAST 850* C., COOLING THE ALLOY TO A TEMPERATURE NOT EXCEEDING 300* C. AT A RATE OF FROM 0.5 TO 50* C. PER SECOND, AND ANNEALING THE ALLOY AT A TEMPERATURE OF 550 TO 650* C. FOR FROM 2 TO 50 HOURS.
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |