US2860047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of removing arsenic from hydrochloric acid suspensions of arsenide and sulpharsenide ores utilizing gaseous chloride
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1956-04-19
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Granted: 1958-11-11
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Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Reynaud Francis
- 👤 Roth Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:21
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/04; C22B3/06; C22B3/10; C01; C01G; C01G28/00; C01G28/005; C01P; C01P2006/00; C01P2006/80; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US937965A
Cited
US1571502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |