US2801155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing magnesium hydroxide from dolomite by means of nitric acid
Assignee: PAUL O TOBELER
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Filing: 1955-03-24
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Granted: 1957-07-30
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Expires: 1975-03-24
Abstract
No abstract record available.
Inventors
- 👤 Kippe Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:47
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/14; C01F5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE PROCESS FOR PRODUCING MAGNESIUM HYDROXIDE AND RECOVERABLE NITROGENOUS COMPOUNDS FROM STARTING DOLOMITE, THAT INCLUDES DISSOLVING RAW DOLOMITE IN NITRIC ACID CONTAINING NITRATES OF CALCIUM AND AMMONIA TO FORM A SOLUTION CONTAINING NITRATES OF CALCIUM, MAGNESIUM AND AMMONIA, REACTING SAID SOLUTION WITH AN ALKALINE COMPOUND OF THE GROUP CONSISTING OF AMMONONIA, THE OXIDES OF MAGNESIUM AND CALCIUM AND HYDRATED DOLOMITE LIME TO PRODUCE RESULTANT COMPOUNDS COMPRISING MAGNESIUM HYDROXIDE PRECIPITATE AND NITROGENOUS COMPOUNDS INCLUDING NITRATES OF CALCIUM AND AMMONIA, SEPERATED IMPURE MAGNESIUM HYDROXIDE PRECIPITATE FROM SAID RESULTANT COMPOUNDS, AQUEOUSLY SASHIING SAID SEPERATED MAGNESIUM HYDROXIDE PRECIPITATE TO REMOVE NITRATE IMPURITIES THEREFROM IN THE WASH WATER, REACTING SUBSTANTIALLY ALL OF SAID WASH WATER WITH OXIDES OF NITROGEN AND OXYGEN TO FORM NITRIC ACID CONTAINING SAID NITRATE IMPURITIES AND USING SAID FORMED NITRIC ACID AND NITRATE IMPURITIES FOR DISOLVING SAID STARTING DOLOMITE.
Claim 2
Dependent Claim
138 words
THE PROCESS FOR PRODUCING MAGNESIUM HYDROXIDE AND RECOVERABLE NITROGENOUS COMPOUNDS FROM STARTING DOLOMITE, THAT INCLUDES DISSOLVING RAW DOLOMITE IN NITRIC ACID CONTAINING NITRATES OF CALCIUM AND AMMONIA TO FORM A SOLUTION CONTAINING NITRATES OF CALCIUM, MAGNESIUM AND AMMONIA, REACTING SAID SOLUTION WITH AN ALKALINE COMPOUND OF THE GROUP CONSISTING OF AMMONONIA, THE OXIDES OF MAGNESIUM AND CALCIUM AND HYDRATED DOLOMITE LIME TO PRODUCE RESULTANT COMPOUNDS COMPRISING MAGNESIUM HYDROXIDE PRECIPITATE AND NITROGENOUS COMPOUNDS INCLUDING NITRATES OF CALCIUM AND AMMONIA, SEPERATED IMPURE MAGNESIUM HYDROXIDE PRECIPITATE FROM SAID RESULTANT COMPOUNDS, AQUEOUSLY SASHIING SAID SEPERATED MAGNESIUM HYDROXIDE PRECIPITATE TO REMOVE NITRATE IMPURITIES THEREFROM IN THE WASH WATER, REACTING SUBSTANTIALLY ALL OF SAID WASH WATER WITH OXIDES OF NITROGEN AND OXYGEN TO FORM NITRIC ACID CONTAINING SAID NITRATE IMPURITIES AND USING SAID FORMED NITRIC ACID AND NITRATE IMPURITIES FOR DISOLVING SAID STARTING DOLOMITE.
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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |