US3078147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic chromium oxide and preparation
Assignee: EIDP Inc
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Filing: 1959-06-05
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Granted: 1963-02-19
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Expires: 1979-06-05
Abstract
No abstract record available.
Inventors
- 👤 Norman L Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:03
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/706; G11B5/70626; G11B5/70636; C; C01; C01G; C01G37/00; C01G37/02; C01P; C01P2002/00; C01P2002/70; C01P2002/77; C01P2006/00; C01P2006/10; C01P2006/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A PROCESS FOR PREPARING SHAPED OBJECTS OF FERROMAGNETIC CHROMIUM OXIDE OF A LEAST 90% PURITY WHICH COMPRISES DISPOSING FERROMAGNETIC CHROMIUM OXIDE OF AT LEAST 90% PURITY IN A MOLD OF THE SHAPE DESIRED FOR THE FINAL OBJECT AND THEREAFTER THERMALLY DECOMPOSING CHROMYL CHLORIDE AT A TEMPERATURE OF 300 TO 450*C. IN THE PRESENCE OF SAID OXIDE.
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |