Patent US3755515A successfully refreshed from Google Patents.
US3755515A
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Utilizing a magnetic field to restrain a ferrite slurry during pressure filtration and particle orientation
Assignee: COMMUNITY BUILDING ASS WASHING
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Filing: 1970-10-15
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Granted: 1973-08-28
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Expires: 1990-10-15
Abstract
Abstract TIC BINDER FOR MAKING A SERIES OF NOVEL PLASTIC-BONDED FERRITE PERMANENT MAGNETS. HIGHLY ORIENTED GREEN FERRITE BODIES ARE PRESSED FROM A FERRITE SLURRY ON A FILTER CLOTH BETWEEN THE POLE FACES OF AN ELECTROMAGNET WITHOUT THE USE OF A RESTRAINING OIL. PORTIONS OF THE GREEN FERRITES ARE SINTERED INTO SUPERIOR, ANISOTROPIC FERRITE PERMANENT MAGNETS. THE MAGNETS CAN BE CRUSHED INTO A POWDER, AND THE POWDER CAN BE MIXED WITH A PLAS-
Inventors
- 👤 P Cochardt
- 👤 A Cochardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:51
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/003; C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2683; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/10; C04B2235/00; C04B2235/60; C04B2235/605; C04B2235/70; C04B2235/74; C04B2235/78; C04B2235/787; Y; Y10; Y10S; Y10S264/00; Y10S264/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |