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Patent US3245876A successfully refreshed from Google Patents.
US3245876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antacid compositions containing high concentrations of magnesium hydroxide and process of making the same
Assignee: Armour Pharmaceutical Co
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Filing: 1963-05-17
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Granted: 1966-04-12
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Expires: 1983-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr James J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/06; A61K33/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PROCESS FOR PREPARING AN ANTACID COMPOSITION CAPABLE AS DETERMINED BY THE HOLBERT, NOBLE AND GROTE TEST METHOD OF MAINTAINING TH EPH OF ARTIFICIAL GASTRIC JUICE WITHIN THE RANGE FROM 3 TO ABOUT 5 FOR AT LEAST ONE HOUR WHICH COMPRISES PREPARING AN AQUEOUS SLURY OF A FRESHLY PRECIPITATED HYDROUS GELATINOUS ALUMINUM HYDROXIDE AND MIXING THEREWITH A HIGH DENSITY MAGNESIUM HYDROXIDE IN A MOLECULAR WEIGHT RATIO CALCULATED AS MGO;AL2O3 WITHIN THE RANGE OF FROM ABOUT 1.25:1 TO ABOUT 7.5:1, SAID MAGNESIUM HYDROXIDE BEING FORMED BY INTERMIXING WITH MAGNESIUM-CHLORIDE-CONTAINING BRINE, AT A TEMPERATURE OF ABOUT 40* TO ABOUT 80*C. FOR A PERIOD OF AT LEAST 2 HOURS, SUFFICIENT SLAKED DOLIME SLURRY TO PROVIDE A SLIGHT EXCESS OF CALCIUM HYDROXIDE RELATIVE TO MAGNESIUM CHLORIDE, AND RECOVERING THE MAGNESIUM HYDROXIDE THUS PRODUCED.
Claim 2
Dependent Claim
129 words
A PROCESS FOR PREPARING AN ANTACID COMPOSITION CAPABLE AS DETERMINED BY THE HOLBERT, NOBLE AND GROTE TEST METHOD OF MAINTAINING TH EPH OF ARTIFICIAL GASTRIC JUICE WITHIN THE RANGE FROM 3 TO ABOUT 5 FOR AT LEAST ONE HOUR WHICH COMPRISES PREPARING AN AQUEOUS SLURY OF A FRESHLY PRECIPITATED HYDROUS GELATINOUS ALUMINUM HYDROXIDE AND MIXING THEREWITH A HIGH DENSITY MAGNESIUM HYDROXIDE IN A MOLECULAR WEIGHT RATIO CALCULATED AS MGO;AL2O3 WITHIN THE RANGE OF FROM ABOUT 1.25:1 TO ABOUT 7.5:1, SAID MAGNESIUM HYDROXIDE BEING FORMED BY INTERMIXING WITH MAGNESIUM-CHLORIDE-CONTAINING BRINE, AT A TEMPERATURE OF ABOUT 40* TO ABOUT 80*C. FOR A PERIOD OF AT LEAST 2 HOURS, SUFFICIENT SLAKED DOLIME SLURRY TO PROVIDE A SLIGHT EXCESS OF CALCIUM HYDROXIDE RELATIVE TO MAGNESIUM CHLORIDE, AND RECOVERING THE MAGNESIUM HYDROXIDE THUS PRODUCED.
References Cited (Backward Citations)
US2923660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |