US874496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of rendering soluble in water the nickel and copper contained in sulfid ores and mattes.
Assignee: ONTARIO NICKEL COMPANY Ltd
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Filing: 1906-03-22
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Granted: 1907-12-24
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Expires: 1926-03-22
Abstract
No abstract record available.
Inventors
- 👤 Walter S Gates
- 👤 Herbert H Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:13
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01
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) | 1910-12-23 | 1911-06-24 | 1911-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-12-23 | 1915-06-24 | 1915-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-12-23 | 1919-06-24 | 1919-12-24 | $7700.00 | Window Closed / Lapsed |