EP0168044A2
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Sustained release tablet
Assignee: Astellas Pharma Inc
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Filing: 1985-07-10
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Granted: —
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Expires: 2005-07-10
Abstract
Abstract A sustained release tablet which comprises the easily disintegrable granules, each containing drug; and wax.
Inventors
- 👤 Toshinobu Uemura
- 👤 Kiyohide Shinooka
- 👤 Tokuaki Kajiho
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 17:08
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2095; A61K9/2004; A61K9/2013; A61K9/2022; A61K9/205; A61K9/2054
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
15 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug; and wax.
Claim 2
Dependent Claim
15 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug; and wax.
Claim 3
Dependent Claim
18 words
A sustained release tablet of claim 1, wherein the easily disintegrable granules, each contains drug and disintegrating agent.
Claim 4
Dependent Claim
52 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug; and wax, prepared by converting a mixture of drug, disintegrating agent, excipient and commonly used additives in this field of the art, into granules, then, treating the resultant granules with wax, and finally compressing said wax-treated granules into tablets.
Claim 5
Dependent Claim
52 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug; and wax, prepared by converting a mixture of drug, disintegrating agent, excipient and commonly used additives in this field of the art, into granules, then, treating the resultant granules with wax, and finally compressing said wax-treated granules into tablets.
Claim 6
Dependent Claim
44 words
A sustained release tablet of claim 2 or 3, wherein disintegrating agent is selected from a group consisting of starch derivatives, gums, cellulose derivatives and ion-exchange resins, and wax is selected from a group consisting of plant or animal wax, hydrogenated oils and paraffin.
Claim 7
Dependent Claim
46 words
A sustained release tablet of claim 2 or 3 wherein the amount of the disintegrating agent is 10 to 60 weight percent of the whole granule components, and the amount of the wax is 20 to 65 weight percent of the whole components of the tablet.
Claim 8
Dependent Claim
20 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug together with water soluble polymer; and wax.
Claim 9
Dependent Claim
20 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug together with water soluble polymer; and wax.
Claim 10
Dependent Claim
21 words
A sustained release tablet of claim 6, wherein the easily disintegrable granules, each contains drug, disintegrating agent and water soluble polymer.
Claim 11
Dependent Claim
60 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug together with water soluble polymer; and wax, prepared by converting a mixture of drug, disintegrating agent, water soluble polymer, excipient and commonly used additives in this field of the art, into granules, then, treating the resultant granules with wax, and finally compressing said wax-treated granules into tablets.
Claim 12
Dependent Claim
60 words
A sustained release tablet which comprises the easily disintegrable granules, each containing drug together with water soluble polymer; and wax, prepared by converting a mixture of drug, disintegrating agent, water soluble polymer, excipient and commonly used additives in this field of the art, into granules, then, treating the resultant granules with wax, and finally compressing said wax-treated granules into tablets.
Claim 13
Dependent Claim
63 words
A sustained release tablet of claim 7 or 8, wherein disintegrating agent is selected from a group consisting of starch derivatives, gums, cellulose derivatives and ion-exchange resins ; water soluble polymer is selected from a group consisting of cellulose derivatives, synthetic water soluble polymers and polysaccharides, and wax is selected from a group consisting of plant or animal wax, hydrogenated oils and paraffin.
Claim 14
Dependent Claim
63 words
A sustained release tablet of claim 7 or 8, wherein the amount of the disintegrating agent is 10 to 60 weight percent of the whole granule components ;the amount of water soluble polymer is 2.5 to 45 weight percent of the whole granule components, and the amount of the wax is 20 to 65 weight percent of the whole components of the tablet.
References Cited (Backward Citations)
No citation records indexed.
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