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US78001A
Expired / Lapsed
US
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Improved pbocess of separating cobalt ahd hickel from othee oses
Assignee: —
•
Filing: —
•
Granted: 1868-05-19
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Expires: 1885-05-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:29
CPC Classifications
C; C01; C01G; C01G49/00; C01G49/02; C01G49/06; C22; C22B; C22B3/00; C22B3/20; C22B3/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1871-05-19 | 1871-11-18 | 1872-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-05-19 | 1875-11-18 | 1876-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-05-19 | 1879-11-18 | 1880-05-19 | $7700.00 | Window Closed / Lapsed |