US2761829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarization prevention in electrolysis of sulfide ores
Assignee: Individual
•
Filing: 1951-06-29
•
Granted: 1956-09-04
•
Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Norman H Dolloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
C; C25; C25C; C25C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN AN ELECTROLYTIC PROCESS WHEREIN AN ANODE COMPRISING A METALLIC SULFIDE IS IMMERSED IN AN AQUEOUS ELECTROLYTE AND WHEREIN THE LIBERATION OF SULFUR AT SAID ANODE TENDS TO CAUSE POLARIZATION THEREAT, THE METHOD OF SUBSTANTIALLY PREVENTING SUCH POLARIZATION WHICH COMPRISES THE STEP OF HEATING SAID ELECTROLYTE TO A TEMPERATURE ABOVE THE MELTING POINT OF THE LIBERATED SULFUR.
Claim 2
Dependent Claim
57 words
IN AN ELECTROLYTIC PROCESS WHEREIN AN ANODE COMPRISING A METALLIC SULFIDE IS IMMERSED IN AN AQUEOUS ELECTROLYTE AND WHEREIN THE LIBERATION OF SULFUR AT SAID ANODE TENDS TO CAUSE POLARIZATION THEREAT, THE METHOD OF SUBSTANTIALLY PREVENTING SUCH POLARIZATION WHICH COMPRISES THE STEP OF HEATING SAID ELECTROLYTE TO A TEMPERATURE ABOVE THE MELTING POINT OF THE LIBERATED SULFUR.
References Cited (Backward Citations)
US272391A
Cited
US636321A
Cited
US669442A
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US840511A
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US1441063A
Cited
US1456798A
Cited
US2404206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |