US4446135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chewable antacid tablets
Assignee: STWB Inc
•
Filing: 1982-06-07
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Granted: 1984-05-01
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Expires: 2002-06-07
Abstract
Abstract Chewable calcium carbonate-containing antacid tablets having good "mouthfeel" contain calcium carbonate particles of a particular size in combination with certain excipients.
Inventors
- 👤 Harvey A. Fountaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:57
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0056; A61K33/00; A61K33/06; A61K33/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
In a method of imparting good "mouthfeel" in chewable antacid tablets, said good "mouthfeel" being characterized by a non-chalky, non-gritty texture, said tablets being prepared from a primary granulation of tablet ingredients comprising from 45 to 50 weight percent of calcium carbonate and from 8 to 11 weight percent of magnesium hydroxide, as the effective antacid ingredients, along with from 30 to 40 weight percent of sucrose and from 8 to 11 weight percent of mannitol, said primary granulation, together with a flavoring agent and a tablet lubricating agent, being pressed into said chewable tablets, the improvement which comprises use of calcium carbonate having an average particle diameter from 5 to 50 microns to impart said good "mouthfeel" to said chewable tablets.
Claim 2
Dependent Claim
122 words
In a method of imparting good "mouthfeel" in chewable antacid tablets, said good "mouthfeel" being characterized by a non-chalky, non-gritty texture, said tablets being prepared from a primary granulation of tablet ingredients comprising from 45 to 50 weight percent of calcium carbonate and from 8 to 11 weight percent of magnesium hydroxide, as the effective antacid ingredients, along with from 30 to 40 weight percent of sucrose and from 8 to 11 weight percent of mannitol, said primary granulation, together with a flavoring agent and a tablet lubricating agent, being pressed into said chewable tablets, the improvement which comprises use of calcium carbonate having an average particle diameter from 5 to 50 microns to impart said good "mouthfeel" to said chewable tablets.
Claim 3
Dependent Claim
46 words
A method according to claim 1 wherein said primary granulation contains from 45 to 47 weight percent of calcium carbonate, from 9 to 10 weight percent of magnesium hydroxide, from 33 to 36 weight percent of sucrose and from 9 to 10 weight percent of mannitol.
Claim 4
Dependent Claim
18 words
A method according to claim 2 wherein the calcium carbonate particles have an average diameter of 15 microns.
Claim 5
Dependent Claim
44 words
A method according to claim 3 wherein the final tablet mixture contains from 95 to 98 weight percent of the primary granulation, from 1.2 to 2.0 weight percent of a tablet lubricating agent and from 0.2 to 0.5 weight percent of a flavoring agent.
Claim 6
Dependent Claim
20 words
A method according to claim 4 wherein the tablet lubricating agent is magnesium stearate and the flavoring agent is mint.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |