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Class Information
Number: 424/472
Name: Drug, bio-affecting and body treating compositions > Preparations characterized by special physical form > Tablets, lozenges, or pills > Sustained or differential release type > Layered unitary dosage forms
Description: Subject matter in which the tablet contains at least one layer completely covering the core or is composed of multiple layers of differing release properties.










Sub-classes under this class:

Class Number Class Name Patents
424/473 With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.) 571


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8709477 Pharmaceutical dosage form Apr. 29, 2014
8709479 Sublingual coated tablet of fentanyl Apr. 29, 2014
8685451 Triple combination release multi-layered tablet Apr. 1, 2014
8685450 Dual drug dosage forms with improved separation of drugs Apr. 1, 2014
8673344 Solid dosage form with a film containing an active substance, as well as its method of production Mar. 18, 2014
8668932 Extended release venlafaxine formulation Mar. 11, 2014
8663683 Sustained-release formulations of topiramate Mar. 4, 2014
8653066 Pharmaceutical compositions Feb. 18, 2014
8647669 Dosage forms for tamper prone therapeutic agents Feb. 11, 2014
8647667 Controlled release hydrocodone formulations Feb. 11, 2014
8637079 Solid preparation comprising alogliptin and pioglitazone Jan. 28, 2014
8637078 Bilayer tablet comprising telmisartan and diuretic Jan. 28, 2014
8628799 Coated tablet formulation and method Jan. 14, 2014
8623418 Pharmaceutical composition Jan. 7, 2014
8617602 Immediate release compositions and methods for delivering drug formulations using weak acid ion exchange resins in abnormally high pH environments Dec. 31, 2013
8617601 Methods and formulations for making pharmaceutical compositions containing bupropion Dec. 31, 2013
8603525 Multilayer orally disintegrating tablet Dec. 10, 2013
8598191 Controlled release compositions of gamma-hydroxybutyrate Dec. 3, 2013
8597681 Methods of producing stabilized solid dosage pharmaceutical compositions containing morphinans Dec. 3, 2013
8591922 Gamma-hydroxybutyrate compositions and their use for the treatment of disorders Nov. 26, 2013
8586085 Methods and formulations for making pharmaceutical compositions containing bupropion Nov. 19, 2013
8580302 Pharmaceutical dosage form with multiple coatings for reduced impact of coating fractures Nov. 12, 2013
8557283 Controlled release formulations of levodopa and uses thereof Oct. 15, 2013
8557285 Pharmaceutical compositions for the coordinated delivery of NSAIDs Oct. 15, 2013
8545887 Modified release dosage forms Oct. 1, 2013
8535717 Pharmaceutical composition Sep. 17, 2013
8535715 Bilayer tablet formulations Sep. 17, 2013
8529950 Magnesium system and use thereof in the cosmetics industry Sep. 10, 2013
8524278 Controlled release pharmaceutical formulations of nitazoxanide Sep. 3, 2013
8512747 Pharmaceutical composition for the treatment of acute disorders Aug. 20, 2013
8506999 Pharmaceutical tablets comprising a plurality of segments Aug. 13, 2013
8507001 Dosage forms for tamper prone therapeutic agents Aug. 13, 2013
8486453 Controlled release compositions with reduced food effect Jul. 16, 2013
8470367 Oral drug delivery system Jun. 25, 2013
8465770 Low dose controlled release tablet Jun. 18, 2013
8465776 Granule and orally disintegrating tablet comprising oxycodone Jun. 18, 2013
8460706 Hydrophilic/lipophilic polymeric matrix dosage formulation Jun. 11, 2013
8454998 Controlled release formulations of levodopa and uses thereof Jun. 4, 2013
8454996 Pharmaceutical composition for the treatment of acute disorders Jun. 4, 2013
8454999 Sustained release compositions of alfuzosin Jun. 4, 2013
8449912 Sustained release compositions of alfuzosin May. 28, 2013
8449911 Drug composition having active ingredient adhered at high concentration to spherical core May. 28, 2013
8435562 Pharmaceutical compositions and oral dosage forms of a levodopa prodrug and methods of use May. 7, 2013
8431156 Pharmaceutical composition Apr. 30, 2013
8425938 Pharmaceutical composition Apr. 23, 2013
8414958 Implant and method for the manufacture thereof Apr. 9, 2013
8414922 Sublingual films Apr. 9, 2013
8409612 Microgranules insoluble in gastric fluid, method for obtaining same and pharmaceutical preparations Apr. 2, 2013
8394409 Controlled extended drug release technology Mar. 12, 2013
8377475 Tablet containing cetirizine, pseudoephedrine, and naproxen containing a barrier layer Feb. 19, 2013

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