US3274303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making magnetically anisotropic permanent magnets
Assignee: Magnetfabrik Bonn GmbH
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Filing: 1962-12-18
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Granted: 1966-09-20
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Muller Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; Y; Y10; Y10S; Y10S425/00; Y10S425/033; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF MAKING MAGNETICALLY ANISOTROPIC PERMANENT MAGNETS COMPRISING SUBJECTING A POWDER OF PERMANENT FERROMAGNETIC MATERIAL PLACED IN A CONFINED SPACE TO A MAGNETIC FORCE WHICH LIFTS PARTICLES OF SAID MAGNETIC POWDER SO AS TO EXPAND SAID POWDER AND RENDER SAD PARTICLES MORE MOBILE, THEN APPLYING A MAGNETIC FIELD ACROSS SAID EXPANDED POWDER, THEREBY ORIENTING SAID PARTICLES WHILE IN SAID MOBILE CONDITION, AND FINALLY COMPACTING SAID POWDER IN SAID CONFINED SPACE WHILE SAID MAGNETIC FIELD IS APPLIED.
Claim 2
Independent Claim
77 words
A METHOD OF MAKING MAGNETICALLY ANISOTROPIC PERMANENT MAGNETS COMPRISING SUBJECTING A POWDER OF PERMANENT FERROMAGNETIC MATERIAL PLACED IN A CONFINED SPACE TO A MAGNETIC FORCE WHICH LIFTS PARTICLES OF SAID MAGNETIC POWDER SO AS TO EXPAND SAID POWDER AND RENDER SAD PARTICLES MORE MOBILE, THEN APPLYING A MAGNETIC FIELD ACROSS SAID EXPANDED POWDER, THEREBY ORIENTING SAID PARTICLES WHILE IN SAID MOBILE CONDITION, AND FINALLY COMPACTING SAID POWDER IN SAID CONFINED SPACE WHILE SAID MAGNETIC FIELD IS APPLIED.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |