Patent US2880136A successfully refreshed from Google Patents.
US2880136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Co-precipitate of aluminium hydroxide with magnesium carbonate and/or calcium carbonate
Assignee: Macleans Ltd
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Filing: 1954-10-18
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Granted: 1959-03-31
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Expires: 1974-10-18
Abstract
No abstract record available.
Inventors
- 👤 Gore David Neville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:08
CPC Classifications
A; A61; A61K; A61K33/00; A61K33/06; A61K33/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A PROCESS FOR MAKING A COMPOSITION OF MATTER USEFUL AS A STOMACH POWDER IN THE TREATMENT OF GASTRIC HYPERACIDITY, WHICH COMPRISES THE STEPS OF ADMIXING AN AQUEOUS SOLUTION OF SODIUM CARBONATE AND AN AQUEOUS SOLUTION OF ALUMIUM CHLORIDE, CALCIUM CHLORIDE AND MAGNESIUM CHLORIDE IN PROPORTIONS TO PRODUCE A CO-PRE CIPITATE CONTAINING ABOUT 23 PARTS BY WEIGHT OF ALUMINIUM HYDROXIDE AS AL(OH)3. ABOUT 47 PARTS BY WEIGHT OF CALCIUM CARBONATE AND ABOUT 30 PARTS BY WEIGHT OF MAGNESIUM CARBONATE AS MGCO3. ALLOWING THE ADMIXED SOLUTIONS TO INTERACT TO PRODUCE THE SAID CO-PRECIPITATE, RECOVERING THE CO-PRECIPITATE FROM THE REACTION MIXTURE AND DRYING IT TO FORM A FINELY-DIVIDED AND INTIMATELY-MIXED POWDER, THE ALUMINIUM HYDROXIDE COMPONENT OF THE POWDER CONSTITUTING A BUFFER AGENT HAVING AN EXTENDED BAFFER EFFECT.
Claim 2
Dependent Claim
124 words
A PROCESS FOR MAKING A COMPOSITION OF MATTER USEFUL AS A STOMACH POWDER IN THE TREATMENT OF GASTRIC HYPERACIDITY, WHICH COMPRISES THE STEPS OF ADMIXING AN AQUEOUS SOLUTION OF SODIUM CARBONATE AND AN AQUEOUS SOLUTION OF ALUMIUM CHLORIDE, CALCIUM CHLORIDE AND MAGNESIUM CHLORIDE IN PROPORTIONS TO PRODUCE A CO-PRE CIPITATE CONTAINING ABOUT 23 PARTS BY WEIGHT OF ALUMINIUM HYDROXIDE AS AL(OH)3. ABOUT 47 PARTS BY WEIGHT OF CALCIUM CARBONATE AND ABOUT 30 PARTS BY WEIGHT OF MAGNESIUM CARBONATE AS MGCO3. ALLOWING THE ADMIXED SOLUTIONS TO INTERACT TO PRODUCE THE SAID CO-PRECIPITATE, RECOVERING THE CO-PRECIPITATE FROM THE REACTION MIXTURE AND DRYING IT TO FORM A FINELY-DIVIDED AND INTIMATELY-MIXED POWDER, THE ALUMINIUM HYDROXIDE COMPONENT OF THE POWDER CONSTITUTING A BUFFER AGENT HAVING AN EXTENDED BAFFER EFFECT.
Claim 3
Dependent Claim
41 words
A COMPOSITION OF MATTER FOR USE AS A STOMACH POWDER IN THE TREATMENT OF GASTRIC HYPERACIDITY COMPRISING A FINELY-DIVIDED AND INTIMATELY-MIXED CO-PRECIPITATE OF ALUMINIUM HYDROXIDE AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE AND MAGNESIUM CARBONATE.
Claim 4
Dependent Claim
41 words
A COMPOSITION OF MATTER FOR USE AS A STOMACH POWDER IN THE TREATMENT OF GASTRIC HYPERACIDITY COMPRISING A FINELY-DIVIDED AND INTIMATELY-MIXED CO-PRECIPITATE OF ALUMINIUM HYDROXIDE AND AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE AND MAGNESIUM CARBONATE.
References Cited (Backward Citations)
US2453446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |