US3579452A
Expired / Lapsed
US
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Process for the production of ferromagnetic pure or isotype manganate mixed phases crystallizing in the ilmenite lattice
Assignee: Bayer AG
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Filing: 1968-08-28
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Granted: 1971-05-18
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Expires: 1988-08-28
Abstract
Abstract PRODUCTION OF FERROMAGNETIC PURE AND ISOTYPE MANGANATE MIXED PHASES OF THE COMPOSITION NI1-XCOX.0.91-1.1MNO3; WHERE 0$X$0.20 THAT CRYSTALLIZE IN THE ILMENITE LATTICE, BY PRECIPITATING SUCH MIXED PHASE CONSTITUENTS FROM AN AQUEOUS SALT SOLUTION OF MANGANESE AND NICKEL, OR MANGANESE, NICKEL AND COBALT, IONS, IN QUANTIIATIVE PROPORTIONS WHICH CORRESPOND DIRECTLY TO THOSE OF THE REQUIRED END COMPOUND, BY INSTANTLY INTERMIXING SUCH REACTANTS WITH A BASIC PRECIPITANT AT ABOUT 0-100*C. OXIDIZING THE RESULTING SUSPENSION, AND THEN FILTERING, WASHING, CALCINING AND COOLING THE RESULTING PRECIPITATE.
Inventors
- 👤 Franz Hund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:28
CPC Classifications
C; C01; C01G; C01G53/00; C01G53/40; C01G53/42; C01G53/44; C01G53/56; C04; C04B; C04B35/00; C04B35/01; C04B35/016; G; G03; G03G; G03G5/00; G03G5/16; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/706; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0311; H01F1/0313; H01F1/0317; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2002/54; C01P2006/00; C01P2006/42
Claims Analysis
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |