Patent US3368639A successfully refreshed from Google Patents.
Patent US3463678A successfully refreshed from Google Patents.
US3463678A
Expired / Lapsed
US
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Method for improving magnetic properties of cobalt-yttrium or cobalt-rare earth metal compounds
Assignee: General Electric Co
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Filing: 1966-08-15
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Granted: 1969-08-26
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:52
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; Y; Y10; Y10S; Y10S241/00; Y10S241/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN THE PROCESS FOR PRODUCING PARTICULATE MAGNETIC MATERIAL HAVING IMPROVED MAGNETIC PROPERTIES, THE STEPS COMPRISING PROVIDING A QUANTITY OF AN ALLOY HAVING A COMPOSITION ACCORDING TO THE FORMULA CO5R WHERE R IS SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, THORIUM, THE RARE EARTH METALS, AND COMBINATIONS OF THESE METALS WITH EACH OTHER, COOLING THE ALLOY TO A TEMPERATURE NO HIGHER THAN ABOUT - 125*C. AND COMMINUTING THE ALLOY TO THE DESIRED PARTICLE SIZE WHILE AT THE LOWERED TEMPERATURE.
Claim 2
Dependent Claim
78 words
IN THE PROCESS FOR PRODUCING PARTICULATE MAGNETIC MATERIAL HAVING IMPROVED MAGNETIC PROPERTIES, THE STEPS COMPRISING PROVIDING A QUANTITY OF AN ALLOY HAVING A COMPOSITION ACCORDING TO THE FORMULA CO5R WHERE R IS SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, THORIUM, THE RARE EARTH METALS, AND COMBINATIONS OF THESE METALS WITH EACH OTHER, COOLING THE ALLOY TO A TEMPERATURE NO HIGHER THAN ABOUT - 125*C. AND COMMINUTING THE ALLOY TO THE DESIRED PARTICLE SIZE WHILE AT THE LOWERED TEMPERATURE.
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |