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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 |
| 5478571 |
Process for the preparation of substantially alcohol free pharmaceutical compositions |
Dec. 26, 1995 |
| 5474786 |
Multilayered controlled release pharmaceutical dosage form |
Dec. 12, 1995 |
| 5472710 |
Pharmaceutical preparation to be administered orally with controlled release of active substance and method for its manufacture |
Dec. 5, 1995 |
| 5462747 |
Pharmaceutical sustained release matrix |
Oct. 31, 1995 |
| 5460826 |
Morphine therapy |
Oct. 24, 1995 |
| 5458888 |
Controlled release tablet formulation |
Oct. 17, 1995 |
| 5451409 |
Sustained release matrix system using hydroxyethyl cellulose and hydroxypropyl cellulose polymer blends |
Sep. 19, 1995 |
| 5447729 |
Multilamellar drug delivery systems |
Sep. 5, 1995 |
| 5443843 |
Gastric retention system for controlled drug release |
Aug. 22, 1995 |
| 5437872 |
Pharmaceutical compositions and a device for administering the same |
Aug. 1, 1995 |
| RE34990 |
Oral therapeutic system having systemic action |
Jul. 4, 1995 |
| 5427799 |
Sustained release composition and method utilizing xanthan gum and an active ingredient |
Jun. 27, 1995 |
| 5419917 |
Controlled release hydrogel formulation |
May. 30, 1995 |
| 5415871 |
Therapeutic agents |
May. 16, 1995 |
| 5399360 |
Pharmaceutical compositions |
Mar. 21, 1995 |
| 5399358 |
Sustained release formulations for 24 hour release of metroprolol |
Mar. 21, 1995 |
| 5399362 |
Once-a-day metoprolol oral dosage form |
Mar. 21, 1995 |
| 5399359 |
Controlled release oxybutynin formulations |
Mar. 21, 1995 |
| 5393533 |
Pharmaceuticals microencapsulated by vapor deposited polymers and method |
Feb. 28, 1995 |
| 5382601 |
Memantine-containing solid pharmaceutical dosage forms having an extended two-stage release profile and production thereof |
Jan. 17, 1995 |
| 5382435 |
Microparticulate pharmaceutical delivery system |
Jan. 17, 1995 |
| 5378474 |
Sustained release pharmaceutical composition |
Jan. 3, 1995 |
| 5376382 |
Tablets, granulates and pellets with a high active substance content for highly concentrated, solid dosage forms of thioctic acid |
Dec. 27, 1994 |
| 5374659 |
Aqueous pharmaceutical suspension for substantially water insoluble pharmaceutical actives |
Dec. 20, 1994 |
| 5374430 |
Pharmaceutical formulation |
Dec. 20, 1994 |
| 5370878 |
Method for preparing a direct compression granulated acetaminophen composition |
Dec. 6, 1994 |
| 5348747 |
Pharmaceutical coating sugars |
Sep. 20, 1994 |
| 5342627 |
Controlled release device |
Aug. 30, 1994 |
| 5334393 |
Sustained-release tablet based on isosorbide 5-mononitrate and process for preparing it |
Aug. 2, 1994 |
| 5330761 |
Bioadhesive tablet for non-systemic use products |
Jul. 19, 1994 |
| 5326572 |
Freeze-dried polymer dispersions and the use thereof in preparing sustained-release pharmaceutical compositions |
Jul. 5, 1994 |
| 5326570 |
Advanced drug delivery system and method of treating psychiatric, neurological and other disorders with carbamazepine |
Jul. 5, 1994 |
| 5324523 |
Controlled release pharmaceutical preparation and process for preparing same |
Jun. 28, 1994 |
| 5314697 |
Stable extended release oral dosage composition comprising loratadine and pseudoephedrine |
May. 24, 1994 |
| 5310561 |
Antiemetic therapy |
May. 10, 1994 |
| 5302397 |
Polymer-based drug delivery system |
Apr. 12, 1994 |
| 5292518 |
Prolonged-release drug tablet formulations |
Mar. 8, 1994 |
| 5292534 |
Sustained release composition and method utilizing xanthan gum and an active ingredient |
Mar. 8, 1994 |
| 5288504 |
Pharmaceuticals microencapsulated by vapor deposited polymers and method |
Feb. 22, 1994 |
| 5283065 |
Controlled release pharmaceutical compositions from spherical granules in tabletted oral dosage unit form |
Feb. 1, 1994 |
| 5275819 |
Drug loaded pollen grains with an outer coating for pulsed delivery |
Jan. 4, 1994 |
| 5275824 |
Therapeutic compositions with controlled release of medicaments supported on crosslinked polymers and coated with polymer films, and their preparation process |
Jan. 4, 1994 |
| 5273758 |
Directly compressible polyethylene oxide vehicle for preparing therapeutic dosage forms |
Dec. 28, 1993 |
| 5268182 |
Sustained-release drug dosage units of terazosin |
Dec. 7, 1993 |
| 5268181 |
Method of using niacin to control nocturnal cholesterol synthesis |
Dec. 7, 1993 |
| 5266331 |
Controlled release oxycodone compositions |
Nov. 30, 1993 |
| 5262169 |
Tablets and granulates containing mesna as active substance |
Nov. 16, 1993 |
| 5248700 |
Active agent containing solid structures for prolonged release of active agents |
Sep. 28, 1993 |
| 5246709 |
Antiemetic therapy |
Sep. 21, 1993 |
| 5234691 |
Sustained-release prepararation of basic medical agent hydrochloride |
Aug. 10, 1993 |
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