US3188247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of the hexagonal phase of the compound (fe, co)2p in particle size permanent magnets
Assignee: NORTH AMERICAN PHILLIPS COMPAN
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Filing: 1962-10-29
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Granted: 1965-06-08
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Vos Krijn Jacobus De
- 👤 V Wilhelmus Antonius Josephus
- 👤 Steeg Michael Gottfried Va Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:36
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/10; H01F1/11; H01F1/04; H01F1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A MANUFACTURE OF PERMANENT MAGNETS FROM SEPARATE PARTICLE-SIZE MAGNETS CONTAINING THE BEXAGONAL PHASE OF THE COMPOUND (FE,CO)2P AS THE CONSTITUTENT ESSENTIAL FOR THE PERMANENT MAGNETIC PROPERTIES, HEATING SAID PARTICLE-SIZE MAGNETS WITH A FE/CO RATIO BETWEEN ABOUT 90:10 AND 60:40 TO A TEMPERATURE AT LEAST BETWEEN 900*C. AND 1150*C., AND COOLING SAID PARTICLE-SIZE MAGNETS TO A TEMPERATURE BELOW ABOUT 600*C. FROM SAID TEMPERATURE A SUCH AN AVERAGE RATE GREATER THAN ABOUT 2*C./SEC. AS TO PREVENT THE FORMATION AT THE LOWER TEMPERATURES OF THE ORTHORHOMBIC PHASE.
Claim 2
Dependent Claim
85 words
IN A MANUFACTURE OF PERMANENT MAGNETS FROM SEPARATE PARTICLE-SIZE MAGNETS CONTAINING THE BEXAGONAL PHASE OF THE COMPOUND (FE,CO)2P AS THE CONSTITUTENT ESSENTIAL FOR THE PERMANENT MAGNETIC PROPERTIES, HEATING SAID PARTICLE-SIZE MAGNETS WITH A FE/CO RATIO BETWEEN ABOUT 90:10 AND 60:40 TO A TEMPERATURE AT LEAST BETWEEN 900*C. AND 1150*C., AND COOLING SAID PARTICLE-SIZE MAGNETS TO A TEMPERATURE BELOW ABOUT 600*C. FROM SAID TEMPERATURE A SUCH AN AVERAGE RATE GREATER THAN ABOUT 2*C./SEC. AS TO PREVENT THE FORMATION AT THE LOWER TEMPERATURES OF THE ORTHORHOMBIC PHASE.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |