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Class Information
Number: 424/469
Name: Drug, bio-affecting and body treating compositions > Preparations characterized by special physical form > Tablets, lozenges, or pills > Sustained or differential release type > Discrete particles in supporting matrix
Description: Subject matter in which discrete soluble particles of the active ingredient are positioned or dispersed in a solid, generally insoluble matrix from which said particles are leached sequentially under conditions of use from the outside portions of the matrix inwardly.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5024842 |
Annealed coats |
Jun. 18, 1991 |
| 5019396 |
Delivery dispenser for treating cardiac arrhythmias |
May. 28, 1991 |
| 5015479 |
Sustained release capsule or tablet formulation comprising a pharmaceutically acceptable dihydropyridine |
May. 14, 1991 |
| 5013728 |
Composition for treating osteoporosis and hormonal imbalance |
May. 7, 1991 |
| 5009897 |
Pharmaceutical granules and tablets made therefrom |
Apr. 23, 1991 |
| 5008114 |
Pharmaceutical compositions with controlled release, and a method for their preparation |
Apr. 16, 1991 |
| 5004613 |
Oral sustained release pharmaceutical formulation and process |
Apr. 2, 1991 |
| 5002774 |
Sustained release pharmaceutical tablet |
Mar. 26, 1991 |
| 5002772 |
Gastric retention system for controlled drug release |
Mar. 26, 1991 |
| 5001161 |
Pharmaceutical composition comprising metroprolol succinate |
Mar. 19, 1991 |
| 4996220 |
Method of producing a clathrate compound |
Feb. 26, 1991 |
| 4992277 |
Immediate release diltiazem formulation |
Feb. 12, 1991 |
| 4990335 |
Use of vinyl alcohol homopolymer and copolymers for tableting active materials |
Feb. 5, 1991 |
| 4973469 |
Drug delivery system |
Nov. 27, 1990 |
| 4970078 |
Crosslinked carboxymethyguar tablet disintegrant |
Nov. 13, 1990 |
| 4970075 |
Controlled release bases for pharmaceuticals |
Nov. 13, 1990 |
| 4968508 |
Sustained release matrix |
Nov. 6, 1990 |
| 4968509 |
Oral sustained release acetaminophen formulation and process |
Nov. 6, 1990 |
| 4966769 |
Method for delivering dosage form for diltiazem |
Oct. 30, 1990 |
| 4966768 |
Sustained release etodolac |
Oct. 30, 1990 |
| 4948739 |
Compact polymer/metal composite particles, aqueous dispersions thereof, preparation and use in biological applications |
Aug. 14, 1990 |
| 4942040 |
Pharmaceutical preparation and a process for its preparation |
Jul. 17, 1990 |
| 4940588 |
Controlled release powder and process for its preparation |
Jul. 10, 1990 |
| 4938967 |
Pharmaceutical formulations |
Jul. 3, 1990 |
| 4937080 |
Granular product (I) |
Jun. 26, 1990 |
| 4933185 |
System for controlled release of biologically active compounds |
Jun. 12, 1990 |
| 4927639 |
Modified release gemfibrozil composition |
May. 22, 1990 |
| 4925675 |
Erythromycin microencapsulated granules |
May. 15, 1990 |
| 4925676 |
Extended release gemfibrozil composition |
May. 15, 1990 |
| 4925678 |
Endothelial envelopment drug carriers |
May. 15, 1990 |
| 4925674 |
Amoxicillin microencapsulated granules |
May. 15, 1990 |
| 4925672 |
Products containing a calcium antagonist and a lipid-lowering agent |
May. 15, 1990 |
| 4913906 |
Novel controlled release dosage form of valproic acid |
Apr. 3, 1990 |
| 4904478 |
Slow-release sodium fluoride tablet and method for treatment of osteoporosis |
Feb. 27, 1990 |
| 4900755 |
Controlled release combination of carbidopa/levodopa |
Feb. 13, 1990 |
| 4898734 |
Polymer composite for controlled release or membrane formation |
Feb. 6, 1990 |
| 4898736 |
Method for tablet preparation |
Feb. 6, 1990 |
| 4894239 |
Sustained-release preparation and production thereof |
Jan. 16, 1990 |
| 4892738 |
Sustained-release granular pharmaceutical preparations |
Jan. 9, 1990 |
| 4892778 |
Juxtaposed laminated arrangement |
Jan. 9, 1990 |
| 4886669 |
Galenical formulation |
Dec. 12, 1989 |
| 4882161 |
Chewable, non-gritty calcium citrate tablet |
Nov. 21, 1989 |
| 4882167 |
Dry direct compression compositions for controlled release dosage forms |
Nov. 21, 1989 |
| 4880830 |
Slow release formulation |
Nov. 14, 1989 |
| 4880623 |
Process for the preparation of solid nifedipine formulations of high bioavailability and with sustained effect, and formulations thus obtained |
Nov. 14, 1989 |
| 4876093 |
Dispenser with dispersing member for delivering beneficial agent |
Oct. 24, 1989 |
| 4869908 |
Fibre formulations |
Sep. 26, 1989 |
| 4861590 |
Sustained release fluoride and calcium composition |
Aug. 29, 1989 |
| 4861598 |
Controlled release bases for pharmaceuticals |
Aug. 29, 1989 |
| 4859467 |
Sustained release fluoride composition |
Aug. 22, 1989 |
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