US3473920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of metallic nickel or cobalt from solution of corresponding salt
Assignee: Republic Steel Corp
•
Filing: 1968-07-22
•
Granted: 1969-10-21
•
Expires: 1988-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edward F Fitzhugh Jr
- 👤 Don C Seidel
- 👤 Fred N Oberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:04
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; C22B23/0469; C01; C01G; C01G51/00; C01G51/08; C01G51/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1592307A
Cited
US2757080A
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US2829965A
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US2960400A
Cited
US3041138A
Cited
US3117000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |