Patent US3486851A successfully refreshed from Google Patents.
US3486851A
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Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides
Assignee: EIDP Inc
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Filing: 1967-03-01
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Granted: 1969-12-30
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Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 William T Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:22
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; C01P2004/00; C01P2004/10; C01P2004/54; C01P2004/80; C01P2004/82; C01P2004/84; C01P2006/00; C01P2006/42
Claims Analysis
Total Claims: 0
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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) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |