US3090107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a permanent magnet
Assignee: GTE Sylvania Inc
•
Filing: 1958-07-24
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Granted: 1963-05-21
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Expires: 1978-07-24
Abstract
No abstract record available.
Inventors
- 👤 Henry T Minden
- 👤 Berenbaum Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:59
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49076
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE METHOD OF MAKING A PERMANENT MAGNET COMPRISING DISPERSING PARTICLES OF A FERROMAGNETIC MATERIAL IN A LIQUID BINDER HOLD IN A NON-MAGNETIC CONTAINER HAVING A COVER, SAID BINDER BEING HELD AT A TEMPERATURE SUFFICIENT TO MAINTAIN SAID BINDER IN A LIQUID STATE BUT BELOW THE CURIE TEMPERATURE OF SAID FERROMAGNETIC MATERIAL, SUBJECTING SAID FERROMAGNETIC MATERIAL TO THE INFLUENCE OF A MAGNETIC FIELD TO MAGNETICALLY ORIENT SAID FERROMAGNETIC PARTICLES WITH RESPECT TO THE DIRECTIN OF SAID APPLIED MAGNETIC FIELD, DENSIFYING SAID DISPERSION, DIRECTIONALLY COOLING AND FREEZING SAID BINDER WHILE MAINTAINING SAID FERROMAGNETIC PARTICLES SO ORIENTED TO PERMANENTLY FIX SAID
References Cited (Backward Citations)
US2576679A
Cited
US2589766A
Cited
US2698917A
Cited
US2825670A
Cited
US2862287A
Cited
US2751525A
Cited
US2892248A
Cited
US2849312A
Cited
US2865085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |