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Browse by Category: Main > Health & Medicine
Class Information
Number: 424/473
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 > With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)
Description: Subject matter in which a sustained or differential release by means of a perforate or porous layer.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8703193 Controlled porous osmotic pump tablets of high permeable drugs and the preparation process thereof Apr. 22, 2014
8684739 Durable film coating compositions having sustained slow-release capability, and methods of use therefor Apr. 1, 2014
8685451 Triple combination release multi-layered tablet Apr. 1, 2014
8668930 Durable film coating compositions having sustained slow-release capability, and methods of use therefor Mar. 11, 2014
8668931 Pharmaceutical formulation containing a biguanide and a thiazolidinedione derivative Mar. 11, 2014
8662087 Device, method, and composition for reducing the incidence of tobacco smoking Mar. 4, 2014
8637080 Rupturing controlled release device comprising a subcoat Jan. 28, 2014
8591947 Dual controlled release dosage form Nov. 26, 2013
8580303 Gastric retained gabapentin dosage form Nov. 12, 2013
8574626 Osmotic device containing amantadine and an osmotic salt Nov. 5, 2013
8535701 Sustained delivery of an active agent using an implantable system Sep. 17, 2013
RE44459 Method for lowering blood glucose Aug. 27, 2013
8470368 Pharmaceutical formulation containing a biguanide and a thiazolidinedione derivative Jun. 25, 2013
8470353 Two-piece, internal-channel osmotic delivery system flow modulator Jun. 25, 2013
8409613 Gastric retained gabapentin dosage form Apr. 2, 2013
8394409 Controlled extended drug release technology Mar. 12, 2013
8367095 Two-piece, internal-channel osmotic delivery system flow modulator Feb. 5, 2013
8333992 Gastric retained gabapentin dosage form Dec. 18, 2012
8333991 Gastric retained gabapentin dosage form Dec. 18, 2012
8329217 Dual controlled release dosage form Dec. 11, 2012
8323691 Methods and apparatus for determining formulation orientation of multi-layered pharmaceutical dosage forms Dec. 4, 2012
8298581 Matrix compositions for controlled delivery of drug substances Oct. 30, 2012
8293799 Osmotic device containing a venlafaxine salt and a salt having an ion in common Oct. 23, 2012
8273365 Two-piece, internal-channel osmotic delivery system flow modulator Sep. 25, 2012
8252332 Gastric retained gabapentin dosage form Aug. 28, 2012
8252331 Osmotic device containing amantadine and an osmotic salt Aug. 28, 2012
8241667 Dual controlled release osmotic device Aug. 14, 2012
8231905 Gastric retained gabapentin dosage form Jul. 31, 2012
8211467 Osmotic drug delivery devices containing suspension formulations comprising particles having active agents and nonaqueous single-phase vehicles Jul. 3, 2012
8197846 Sustained release pharmaceutical composition Jun. 12, 2012
8192756 Gastric retained gabapentin dosage form Jun. 5, 2012
8187633 Controlled release coated tablets having prolonged gastric retention May. 29, 2012
8158150 Two-piece, internal-channel osmotic delivery system flow modulator Apr. 17, 2012
8142811 Controlled release hydrocodone formulations Mar. 27, 2012
8084059 Antidepressant dosage form Dec. 27, 2011
8067029 Rapidly disintegrating gelatinous coated tablets Nov. 29, 2011
8052996 Two-piece, internal-channel osmotic delivery system flow modulator Nov. 8, 2011
8029822 Rupturing controlled release device having a preformed passageway Oct. 4, 2011
7959947 Film coating Jun. 14, 2011
7959946 Pharmaceutical formulation containing a biguanide and a thiazolidinedione derivative Jun. 14, 2011
7923027 Process Apr. 12, 2011
7879354 Rapidly disintegrating gelatinous coated tablets Feb. 1, 2011
7879355 Method and system for treatment of eating disorders Feb. 1, 2011
7875293 Biointerface membranes incorporating bioactive agents Jan. 25, 2011
7862799 Antibody production method Jan. 4, 2011
7846476 Once-a-day oxycodone formulations Dec. 7, 2010
7820201 System for manufacturing controlled release dosage forms, such as zero-order release profile dosage form manufactured by three-dimensional printing Oct. 26, 2010
7807197 Composite dosage forms having an inlaid portion Oct. 5, 2010
7736668 System for delaying drug delivery up to seven hours Jun. 15, 2010
7731989 Gastric retained gabapentin dosage form Jun. 8, 2010

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