US3029496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing magnetic materials and to the magnetic materials so produced
Assignee: Rola Co Australia Pty Ltd
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Filing: 1958-11-14
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Granted: 1962-04-17
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Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
- 👤 Levi Fulvio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; B; B22; B22F; B22F9/00; B32; B32B; B32B15/00; B32B15/01; C; C21; C21D; C21D8/00; C21D8/12; C21D8/1216; C21D2251/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/9265; Y10S428/928; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T29/4902; Y10T29/49075; Y10T29/49078; Y10T29/49801; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12486; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A METHOD OF PRODUCING PERMANENT MAGNETS COMPRISING THE STEPS OF PROCIDING A PLYRALITY OF ROD-LIKE ELEMENTS OF A DUCTILE FERROMAGNETIC METAL, ENCLOSING EACH ELEMENT IN A CASING OF A DIFFERENT METAL HAVING SUBSTANTIALLY THE SAME DRY DUCTILLY ASSEMBLING A PLURALITY OF THE ENCASED FERROMAGNETIC ELEEMENTS TOGETHER TO FORM A COMPOSITE BODY, AND COMPACTING THE ASSEMBLE TO UNIFORMLY ELONGATED THE COMPOSITE BODY BY REPEATED COMPACTING OPERATIONS UNTIL SUBSTANTIALLY ALL OF THE FERROMAGNETIC ELEMENTS ARE SINGLE DOMAIN.
Claim 2
Independent Claim
75 words
A METHOD OF PRODUCING PERMANENT MAGNETS COMPRISING THE STEPS OF PROCIDING A PLYRALITY OF ROD-LIKE ELEMENTS OF A DUCTILE FERROMAGNETIC METAL, ENCLOSING EACH ELEMENT IN A CASING OF A DIFFERENT METAL HAVING SUBSTANTIALLY THE SAME DRY DUCTILLY ASSEMBLING A PLURALITY OF THE ENCASED FERROMAGNETIC ELEEMENTS TOGETHER TO FORM A COMPOSITE BODY, AND COMPACTING THE ASSEMBLE TO UNIFORMLY ELONGATED THE COMPOSITE BODY BY REPEATED COMPACTING OPERATIONS UNTIL SUBSTANTIALLY ALL OF THE FERROMAGNETIC ELEMENTS ARE SINGLE DOMAIN.
Claim 3
Dependent Claim
45 words
A PERMANENT MAGNET COMPRISING A PLURALITY OF LATERALLY SPACED FERROMAGNETIC ELEMENTS SUBSTANTIALLY ALL OF WHICH ARE SINGLE DOMAIN, AND A METALLIC MATERIAL DIFFERENT TO THE MATERIAL OF THE ELEMENTS SEPARATING SAID ELEMENTS FROM EACH OTHER, SAID PERMANENT BEING PRODUCED BY THE METHOD OF CLAIM 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |