US2787591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic method of depositing alkali metal at a mercury cathode
Assignee: Olin Corp
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Filing: 1949-06-23
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Granted: 1957-04-02
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Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 William C Gardiner
- 👤 Joseph L Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:59
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/34; C25B1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN THE DEPOSITION OF AN ALKALI METAL AT THE MERCURY CATHODE IN AN ELECTROLYTIC CELL WHEREIN AN ALKALI METAL CHLORIDE BRINE PRACTICALLY SATURATED WITH CALCIUM SULFATE CONTAINING FROM 0.8 TO 1.45 GRAMS PER LITER OF CA++ IONS, IS EMPLOYED AND WHEREIN BRINE LEAVING THE CELL IS DECHLORINATED, RESATURATED, MADE ALKALINE ND FREED FROM PRECIPITATED MATERIAL FOR RETURN TO THE CELL, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE PH OF THE BRINE IN THE CELL AT FROM 1.7 TO 3.0 WHEREBY THE DEPOSITION OF HYDROGEN IS EFFECTIVELY SUPPRESSED.
Claim 2
Dependent Claim
86 words
IN THE DEPOSITION OF AN ALKALI METAL AT THE MERCURY CATHODE IN AN ELECTROLYTIC CELL WHEREIN AN ALKALI METAL CHLORIDE BRINE PRACTICALLY SATURATED WITH CALCIUM SULFATE CONTAINING FROM 0.8 TO 1.45 GRAMS PER LITER OF CA++ IONS, IS EMPLOYED AND WHEREIN BRINE LEAVING THE CELL IS DECHLORINATED, RESATURATED, MADE ALKALINE ND FREED FROM PRECIPITATED MATERIAL FOR RETURN TO THE CELL, THE IMPROVEMENT WHICH COMPRISES MAINTAINING THE PH OF THE BRINE IN THE CELL AT FROM 1.7 TO 3.0 WHEREBY THE DEPOSITION OF HYDROGEN IS EFFECTIVELY SUPPRESSED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |