Patent US2512973A successfully refreshed from Google Patents.
US2512973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making perchlorates
Assignee: Western Electrochemical Co
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Filing: 1945-10-31
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Granted: 1950-06-27
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Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Schumacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:51
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN THE ELECTROCHEMICAL CONVERSION OF AN AQUEOUS SODIUM CHLORATE SOLUTION TO SODIUM PERCHLORATE SOLUTION, THE STEPS COMPRISING ESSENTIALLY MAKING AN AQUEOUS ELECTROLYTE CONSISTING ESSENTIALLY OF FROM ABOUT 500 GRAMS PER LITER TO A SATURATED SOLUTION OF SODIUM CHLORATE, FROM 3 TO 15 GRAMS OF SODIUM CHROMATE AND 1 TO 10 GRAMS OF MAGNESIUM CHLORIDE BEING PRESENT PER LITER OF SOLUTION AS CATALYSTS; AND ELECTROLYZING SAID SOLUTION BETWEEN STEEL AND PLATINUM ELECTRODES UNDER ELECTRICAL CONDITINS INCREASING THE PERCHLORATE CONTENT WHILE RAPIDLY CIRCULATING SAID ELECROLYTE OUT AND INTO THE ELECTROLYTIC CELL, AND WHILE MAINTAINING THE ELECTROLYTE IN THE CELL AT A UNIFORM PH VALUE IN THE RANGE OF 6.0 TO 6.8 AND A UNIFORM TEMPERATURE OF ABOUT 55* CENTIGRADE THROUGHOUT THE BODY OF SAID ELECTROLYTE.
Claim 2
Dependent Claim
123 words
IN THE ELECTROCHEMICAL CONVERSION OF AN AQUEOUS SODIUM CHLORATE SOLUTION TO SODIUM PERCHLORATE SOLUTION, THE STEPS COMPRISING ESSENTIALLY MAKING AN AQUEOUS ELECTROLYTE CONSISTING ESSENTIALLY OF FROM ABOUT 500 GRAMS PER LITER TO A SATURATED SOLUTION OF SODIUM CHLORATE, FROM 3 TO 15 GRAMS OF SODIUM CHROMATE AND 1 TO 10 GRAMS OF MAGNESIUM CHLORIDE BEING PRESENT PER LITER OF SOLUTION AS CATALYSTS; AND ELECTROLYZING SAID SOLUTION BETWEEN STEEL AND PLATINUM ELECTRODES UNDER ELECTRICAL CONDITINS INCREASING THE PERCHLORATE CONTENT WHILE RAPIDLY CIRCULATING SAID ELECROLYTE OUT AND INTO THE ELECTROLYTIC CELL, AND WHILE MAINTAINING THE ELECTROLYTE IN THE CELL AT A UNIFORM PH VALUE IN THE RANGE OF 6.0 TO 6.8 AND A UNIFORM TEMPERATURE OF ABOUT 55* CENTIGRADE THROUGHOUT THE BODY OF SAID ELECTROLYTE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |