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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 |
| 5217719 |
Surface-treated sodium bicarbonate particle and molded preparation thereof |
Jun. 8, 1993 |
| 5215755 |
Rotogranulations and taste masking coatings for preparation of chewable pharmaceutical tablets |
Jun. 1, 1993 |
| 5211958 |
Pharmaceutical composition and process for its preparation |
May. 18, 1993 |
| 5211957 |
Solid rapidly disintegrating dosage form |
May. 18, 1993 |
| 5202159 |
Preparation method of microdispersed tablet formulation of spray-dried sodium diclofenac enteric-coated microcapsules |
Apr. 13, 1993 |
| 5202128 |
Sustained release pharmaceutical composition |
Apr. 13, 1993 |
| 5200193 |
Pharmaceutical sustained release matrix and process |
Apr. 6, 1993 |
| 5198228 |
Direct dry compressible acetaminophen tablet |
Mar. 30, 1993 |
| 5196203 |
Theophylline dosage form |
Mar. 23, 1993 |
| 5188841 |
Sustained release pharmaceutical formulations |
Feb. 23, 1993 |
| 5185152 |
Method and apparatus for controlled release drug delivery to the cornea and anterior chamber of the eye |
Feb. 9, 1993 |
| 5185159 |
Pharmaceutical composition based on valproic acid and a process for preparing it |
Feb. 9, 1993 |
| 5169639 |
Controlled release verapamil tablets |
Dec. 8, 1992 |
| 5169640 |
Pharmaceutical compositions |
Dec. 8, 1992 |
| 5164380 |
Process for preparing piroxicam/cyclodextrin complexes, the products obtained and their pharmaceutical compositions |
Nov. 17, 1992 |
| 5160469 |
Manufacture of pellets of xanthine derivatives |
Nov. 3, 1992 |
| 5160742 |
System for delivering an active substance for sustained release |
Nov. 3, 1992 |
| 5158777 |
Captopril formulation providing increased duration of activity |
Oct. 27, 1992 |
| 5153002 |
Biocompatible gradient controlled release implant |
Oct. 6, 1992 |
| 5151273 |
Delayed-release pharmaceutical preparation |
Sep. 29, 1992 |
| 5147646 |
Hydrogel containing envelopes |
Sep. 15, 1992 |
| 5137669 |
Manufacture of partially fused peptide pellet |
Aug. 11, 1992 |
| 5135757 |
Compressible sustained release solid dosage forms |
Aug. 4, 1992 |
| 5133908 |
Process for the preparation of dispersible colloidal systems of a substance in the form of nanoparticles |
Jul. 28, 1992 |
| 5132116 |
Tablets of the hydrophilic matrix type based on salbutamol and a process for their preparation |
Jul. 21, 1992 |
| 5132295 |
Alginate-based verapamil-containing depot drug form |
Jul. 21, 1992 |
| 5130140 |
Method of making direct dry compressible acetaminophen composition |
Jul. 14, 1992 |
| RE33994 |
Pharmaceutical delivery system |
Jul. 14, 1992 |
| 5128142 |
Sustained release drug delivery system |
Jul. 7, 1992 |
| 5128143 |
Sustained release excipient and tablet formulation |
Jul. 7, 1992 |
| 5126145 |
Controlled release tablet containing water soluble medicament |
Jun. 30, 1992 |
| 5118528 |
Process for the preparation of dispersible colloidal systems of a substance in the form of nanoparticles |
Jun. 2, 1992 |
| 5116619 |
Vaginal progesterone tablet |
May. 26, 1992 |
| 5108759 |
Endothelial envelopment drug carriers |
Apr. 28, 1992 |
| 5096714 |
Prolonged release drug tablet formulations |
Mar. 17, 1992 |
| 5091175 |
Pharmaceutical composition containing bile acid sequestrant enclosed in a size-exclusion membrane |
Feb. 25, 1992 |
| 5085865 |
Sustained release pharmaceutical preparations containing an analgesic and a decongestant |
Feb. 4, 1992 |
| 5082667 |
Solid pharmaceutical dosage in tablet triturate form and method of producing same |
Jan. 21, 1992 |
| 5080907 |
Pharmaceutical preparations containing non-steroidal anti-inflammatory agents |
Jan. 14, 1992 |
| 5075114 |
Taste masking and sustained release coatings for pharmaceuticals |
Dec. 24, 1991 |
| 5075291 |
Crystalline sugar alcohol containing uniformly dispersed particulate pharmaceutical compound |
Dec. 24, 1991 |
| 5073384 |
Maltodextrin/defoaming composition combinate |
Dec. 17, 1991 |
| 5073380 |
Oral sustained release pharmaceutical formulation and process |
Dec. 17, 1991 |
| 5069911 |
Pharmaceutical 9,10-dihydrogenated ergot alkaloid containing compositions |
Dec. 3, 1991 |
| 5068111 |
Pharmaceutical tablets and capsule granulates of scleroglucan and active substance |
Nov. 26, 1991 |
| 5059595 |
Pharmaceutical compositions containing 5-methyltetrahydrofolic acid, 5-formyltetrahydrofolic acid and their pharmaceutically acceptable salts in controlled-release form active in the therapy o |
Oct. 22, 1991 |
| 5057323 |
Hollow granular medicine and its preparation |
Oct. 15, 1991 |
| 5051262 |
Processes for the preparation of delayed action and programmed release pharmaceutical forms and medicaments obtained thereby |
Sep. 24, 1991 |
| 5037658 |
Direct dry compressible acetaminophen composition |
Aug. 6, 1991 |
| 5030455 |
Sustained-release drug preparation |
Jul. 9, 1991 |
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