US3085036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monocrystalline permanent magnets and method of making them
Assignee: Centro Magneti Permanenti
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Filing: 1960-03-11
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Granted: 1963-04-09
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Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Stcinort Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:51
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
THE PROCESS OF PRODUCING MONOCRYSTALLINE STRUCTURE IN A NORMALLY POLYCRYSTALLINE MAGNET BODY OF IRON-NICKELALUMINUM TYPE PERMANENT-MAGNET ALLOY, WHICH COMPRISES HEAT-TREATING THE BODY AT A GAMMA-PHASE PRECIPITATING TEMPERATURE TO INDUCE GAMMA-PHASE PRECIPITATION THEREIN, AND SUBJECTING THE BODY TO HEAT TREATMENT, WITH GAMMAPHASE PRECIPITATE PRESENT IN THE BODY IN SUFFICIENT AMOUNT TO PRODUCE CRITICAL STRAIN THEREIN, AT A RECRYSTALLIZATION TEMPERATURE FOR A TIME SUFFICIENT TO PERMIT SUBSTANTIAL MONOCRYSTAL GROWTH IN THE MAGNET BODY, AND TO REDISSOLVE THE GAMMA-PHASE PRECIPITATE.
Claim 2
Dependent Claim
77 words
THE PROCESS OF PRODUCING MONOCRYSTALLINE STRUCTURE IN A NORMALLY POLYCRYSTALLINE MAGNET BODY OF IRON-NICKELALUMINUM TYPE PERMANENT-MAGNET ALLOY, WHICH COMPRISES HEAT-TREATING THE BODY AT A GAMMA-PHASE PRECIPITATING TEMPERATURE TO INDUCE GAMMA-PHASE PRECIPITATION THEREIN, AND SUBJECTING THE BODY TO HEAT TREATMENT, WITH GAMMAPHASE PRECIPITATE PRESENT IN THE BODY IN SUFFICIENT AMOUNT TO PRODUCE CRITICAL STRAIN THEREIN, AT A RECRYSTALLIZATION TEMPERATURE FOR A TIME SUFFICIENT TO PERMIT SUBSTANTIAL MONOCRYSTAL GROWTH IN THE MAGNET BODY, AND TO REDISSOLVE THE GAMMA-PHASE PRECIPITATE.
Claim 3
Dependent Claim
102 words
A PERMANENT MAGNET OF AN ALLOY OF THE COMPOSITION: 12 TO 20 PERCENT NICKEL, 6 TO 11 PERCENT ALUMINUM, 16 TO 30 PERCENT COBALT, 2 TO 6 PERCENT COPPER, UP TO 7 PERCENT TITANIUM, AND FROM 0.03 TO 1.8 PERCENT OF A GAMMAPHASE PRECIPITANT OF THE CLASS CONSISTING OF CARBON, NITROGEN, MANGANESE, RUTHENIUM, RHODIUM, PALLADIUM, RHENIUM, OSMIUM, IRIDIUM, PLATINUM, AND GOLD, WITH THE BALANCE SUBSTANTIALLY ALL IRON, SAID MAGNET CONSISTING SUBSTANTIALLY OF A MONOCRYSTALLINE STRUCTURE OF SUBSTANTIALLY PURE ALPHAPHASE (INCLUDING ALPHA-PRIME PHASE) MICROSTRUCTURE, AND HAVING A MAGNETICALLY HARDENED DIRECTION OF PREFERRED ORIENTATION SUBSTANTIALLY PARALLEL WITH THE (100) AXIS OF THE MONOCRYSTALLINE STRUCTURE.
Claim 4
Dependent Claim
102 words
A PERMANENT MAGNET OF AN ALLOY OF THE COMPOSITION: 12 TO 20 PERCENT NICKEL, 6 TO 11 PERCENT ALUMINUM, 16 TO 30 PERCENT COBALT, 2 TO 6 PERCENT COPPER, UP TO 7 PERCENT TITANIUM, AND FROM 0.03 TO 1.8 PERCENT OF A GAMMAPHASE PRECIPITANT OF THE CLASS CONSISTING OF CARBON, NITROGEN, MANGANESE, RUTHENIUM, RHODIUM, PALLADIUM, RHENIUM, OSMIUM, IRIDIUM, PLATINUM, AND GOLD, WITH THE BALANCE SUBSTANTIALLY ALL IRON, SAID MAGNET CONSISTING SUBSTANTIALLY OF A MONOCRYSTALLINE STRUCTURE OF SUBSTANTIALLY PURE ALPHAPHASE (INCLUDING ALPHA-PRIME PHASE) MICROSTRUCTURE, AND HAVING A MAGNETICALLY HARDENED DIRECTION OF PREFERRED ORIENTATION SUBSTANTIALLY PARALLEL WITH THE (100) AXIS OF THE MONOCRYSTALLINE STRUCTURE.
References Cited (Backward Citations)
US2499862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |