US2837404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of potassium bicarbonate and potassium carbonate
Assignee: Honeywell International Inc
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Filing: 1956-09-04
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Granted: 1958-06-03
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Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Alan G Follows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:35
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF PRODUCING A POTASSIUM SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE AND POTASSIUM BICARBONATE COMPRISING FORMING AN AMMONIATED AND CARBONATE AQUEOUS SOLUTION CONTAINING POTASSIUM CHLORIDE AND CARBONATE AND AMMONIUM IONS IN RELATIVE PROPORTIONS AND IN CONCENTRATION SUCH THAT THE SOLUTION UPON COOLING PRECIPITATES A CARBONATE COMPOUND, INCLUDING WITHIN SAID SOLUTION FOR EACH TWO PARTS OF WATER AT LEAST ABOUT ONE PART OF A FREE, BASIC, ORGANIC NITROGEN COMPOUND WEAKER IN BASIC PROPERTIES THAN AMMONIUM HYDROXIDE, COOLING SAID SOLUTION UNTIL PRECIPITATE COMPRISING ONE OF THE POTASSIUM CARBONATE AND POTASSIUM BICARBONATE FORMS, AND SEPARATING MOTHER LIQUOR CONTAINING SAID ORGANIC NITROGEN COMPOUND FROM SAID PRECIPITATE.
Claim 2
Independent Claim
106 words
THE METHOD OF PRODUCING A POTASSIUM SALT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE AND POTASSIUM BICARBONATE COMPRISING FORMING AN AMMONIATED AND CARBONATE AQUEOUS SOLUTION CONTAINING POTASSIUM CHLORIDE AND CARBONATE AND AMMONIUM IONS IN RELATIVE PROPORTIONS AND IN CONCENTRATION SUCH THAT THE SOLUTION UPON COOLING PRECIPITATES A CARBONATE COMPOUND, INCLUDING WITHIN SAID SOLUTION FOR EACH TWO PARTS OF WATER AT LEAST ABOUT ONE PART OF A FREE, BASIC, ORGANIC NITROGEN COMPOUND WEAKER IN BASIC PROPERTIES THAN AMMONIUM HYDROXIDE, COOLING SAID SOLUTION UNTIL PRECIPITATE COMPRISING ONE OF THE POTASSIUM CARBONATE AND POTASSIUM BICARBONATE FORMS, AND SEPARATING MOTHER LIQUOR CONTAINING SAID ORGANIC NITROGEN COMPOUND FROM SAID PRECIPITATE.
References Cited (Backward Citations)
US2768060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |