US3360345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry heating process for preparation of antacid compounds
Assignee: Warner Lambert Co LLC
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Filing: 1963-03-22
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Granted: 1967-12-26
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Seymour Z Lewin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:11
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0086
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
A PROCESS FOR PREPARING BUFFERING COMPOSITIONS WHICH COMPRISES HEATING IN THE SOLID STATE AND IN THE ABSENCE OF FREE WATER AT A TEMPERATURE OF 80* TO 180*C. A MIXTURE OF FINELY-DIVIDED ALUMINUM HYDROXIDE AND AT LEAST ONE FINELY-DIVIDED SALT SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL AND AMMONIUM BICARBONATES, THE MOL RATIO OF THE TOTAL AMOUNT OF SAID BICARBONATES TO ALUMINUM HYDROXIDE BEING IN THE RANGE OF ABOUT 0.05:1 TO ABOUT 8:1 AND RECOVERING THE DESIRED REACTION PRODUCT.
Claim 2
Dependent Claim
80 words
A PROCESS FOR PREPARING BUFFERING COMPOSITIONS WHICH COMPRISES HEATING IN THE SOLID STATE AND IN THE ABSENCE OF FREE WATER AT A TEMPERATURE OF 80* TO 180*C. A MIXTURE OF FINELY-DIVIDED ALUMINUM HYDROXIDE AND AT LEAST ONE FINELY-DIVIDED SALT SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL AND AMMONIUM BICARBONATES, THE MOL RATIO OF THE TOTAL AMOUNT OF SAID BICARBONATES TO ALUMINUM HYDROXIDE BEING IN THE RANGE OF ABOUT 0.05:1 TO ABOUT 8:1 AND RECOVERING THE DESIRED REACTION PRODUCT.
Claim 3
Dependent Claim
17 words
A BUFFER COMPOSITION COMPRISING A HYDRATED OR ANHYDROUS COMPOUND HAVING, ON THE ANHYDROUS BASIS, THE EMPIRICAL FORMULA:
Claim 4
Dependent Claim
17 words
A BUFFER COMPOSITION COMPRISING A HYDRATED OR ANHYDROUS COMPOUND HAVING, ON THE ANHYDROUS BASIS, THE EMPIRICAL FORMULA:
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |