Patent US2954277A successfully refreshed from Google Patents.
US2954277A
Expired / Lapsed
US
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Method of processing magnesium chlorides
Assignee: Individual
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Filing: 1959-07-15
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Granted: 1960-09-27
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/02; C01F5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
THE METHOD OF PROCESSING ANHYDROUS MAGNESIUM CHLORIDE WHICH COMPRISES, ADDING SAID MAGNESIUM CHLORIDE IN POWDERED FORM TO A FLUIDIZED BED CONSISTING ESSENTIALLY OF MAGNESIUM OXIDE WITH SOME RETAINED CHLORIDE, MAINTAINED IN A FLUIDIZED STATE BY THE UPWARD TRAVERSE THROUGH SAME OF AIR HEATED TO A TEMPERATURE BETWEEN AN APPROXIMATE 450*C. AND AN APPROXIMATE 550*C. WITH ATTENDANT EVOLUTION OF CHLORINE GAS, WITHDRAWING CONTINUOUSLY AN AMOUNT OF SAID FLUIDIZED MAGNESIUM OXIDE CORRESPONDING TO THE ADDED MAGNESIUM CHLORIDE AND ADDING SAID WITHDRAWAL TO A FLUIDIZED BED CONSISTING ESSENTIALLY OF CHLORINE-FREE-MAGNESIUM OXIDE MAINTAINED IN SAID FLUIDIZED STATE BY THE UPWARD TRAVERSE THROUGH SAME OF A CURRENT OF AIR AND STEAM HEATED TO A TEMPERATURE BETWEEN AN APPROXIMATE 450*C. AND AN APPROXIMATE 550* C., THUS OBTAINING SUBSTANTIALLY PURE MAGNESIUM OXIDE WITH ATTENDANT EVOLUTION OF HYDROCHLORIC ACID GAS, AND WITHDRAWING CONTINUOUSLY FROM SAID FLUIDIZED BED OF MAGNESIUM OXIDE AN AMOUNT OF SAID MAGNESIUM OXIDE CORRESPONDING TO THE ANHYDROUS MAGNESIUM CHLORIDE ORIGINALLY ADDED TO THE FIRST FLUIDIZED BED.
Claim 2
Independent Claim
161 words
THE METHOD OF PROCESSING ANHYDROUS MAGNESIUM CHLORIDE WHICH COMPRISES, ADDING SAID MAGNESIUM CHLORIDE IN POWDERED FORM TO A FLUIDIZED BED CONSISTING ESSENTIALLY OF MAGNESIUM OXIDE WITH SOME RETAINED CHLORIDE, MAINTAINED IN A FLUIDIZED STATE BY THE UPWARD TRAVERSE THROUGH SAME OF AIR HEATED TO A TEMPERATURE BETWEEN AN APPROXIMATE 450*C. AND AN APPROXIMATE 550*C. WITH ATTENDANT EVOLUTION OF CHLORINE GAS, WITHDRAWING CONTINUOUSLY AN AMOUNT OF SAID FLUIDIZED MAGNESIUM OXIDE CORRESPONDING TO THE ADDED MAGNESIUM CHLORIDE AND ADDING SAID WITHDRAWAL TO A FLUIDIZED BED CONSISTING ESSENTIALLY OF CHLORINE-FREE-MAGNESIUM OXIDE MAINTAINED IN SAID FLUIDIZED STATE BY THE UPWARD TRAVERSE THROUGH SAME OF A CURRENT OF AIR AND STEAM HEATED TO A TEMPERATURE BETWEEN AN APPROXIMATE 450*C. AND AN APPROXIMATE 550* C., THUS OBTAINING SUBSTANTIALLY PURE MAGNESIUM OXIDE WITH ATTENDANT EVOLUTION OF HYDROCHLORIC ACID GAS, AND WITHDRAWING CONTINUOUSLY FROM SAID FLUIDIZED BED OF MAGNESIUM OXIDE AN AMOUNT OF SAID MAGNESIUM OXIDE CORRESPONDING TO THE ANHYDROUS MAGNESIUM CHLORIDE ORIGINALLY ADDED TO THE FIRST FLUIDIZED BED.
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) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |