Patent US3092450A successfully refreshed from Google Patents.
US3092450A
Expired / Lapsed
US
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Preparation of anhydrous magnesium chloride
Assignee: Dow Chemical Co
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Filing: 1960-12-27
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Granted: 1963-06-04
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Valdemar J Christensen
- 👤 Granville C Egleson
- 👤 Elwood L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:27
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/26; C01F5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE PREPARATION OF ANHYDROUS MAGNESIUM CHLORIDE WHICH COMPRISES; ADDING MAGNESIUM CHLORIDE TO AN AGITATED AQUEOUS SOLUTION CONTAINING NOT MORE THAT 65 WEIGHT PERCENT AMMONIA, MAINTAINING AMMONIA CONCENTRATION IN THE THUS FORMED REACTION MIXTURE AT FROM 35 TO 65 PERCENT BY WEIGHT OF SOLUTION THROUGHOUT REACTION IN WICH MAGNESIUM CHLORIDE REACTS WITH AMMONIA TO FORM A PRECIPITATE OF MAGNESIUM CHLORIDE HEXAMMONIATE, SEPARATING THE PRECIPITATED MAGNESIUM CHLORIDE HEXAMMONIATE FROM THE REACTION MIXTURE, AND RECOVERING ANHYDROUS MAGNESIUM CHLORIDE FROM SAID HEXAMMONIATE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE PREPARATION OF ANHYDROUS MAGNESIUM CHLORIDE WHICH COMPRISES; ADDING MAGNESIUM CHLORIDE TO AN AGITATED AQUEOUS SOLUTION CONTAINING NOT MORE THAT 65 WEIGHT PERCENT AMMONIA, MAINTAINING AMMONIA CONCENTRATION IN THE THUS FORMED REACTION MIXTURE AT FROM 35 TO 65 PERCENT BY WEIGHT OF SOLUTION THROUGHOUT REACTION IN WICH MAGNESIUM CHLORIDE REACTS WITH AMMONIA TO FORM A PRECIPITATE OF MAGNESIUM CHLORIDE HEXAMMONIATE, SEPARATING THE PRECIPITATED MAGNESIUM CHLORIDE HEXAMMONIATE FROM THE REACTION MIXTURE, AND RECOVERING ANHYDROUS MAGNESIUM CHLORIDE FROM SAID HEXAMMONIATE.
References Cited (Backward Citations)
GB330650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |