Containing Solid Synthetic Polymers Patents (Class 424/482)
  • Patent number: 7314638
    Abstract: The present invention relates to a simple and effective method for preparing a tamsulosin HCl sustained-release tablet and a tamsulosin HCl sustained-release tablet produced thereby. The method comprises the steps of: dissolving tamsulosin HCl as an active ingredient in an organic solvent; dissolving the tamsulosin HCl solution in hydroxypropylmethylcellulose phthalate to prepare a binder solution; and kneading the binder solution with a hydroxypropylmethylcellulose phthalate/glyceryl dibehenate mixture as an excipient and allows tamsulosin HCl to be released at uniformly controlled amounts in a subtained-release manner in vivo by controlling drug release rate according to different pH environments in vivo, so that it shows improved bioavailability and minimized side effects.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: January 1, 2008
    Assignee: Kyungdong Pharm. Co., Ltd.
    Inventors: Byoung-Suk Lee, Ah-Ram Lee, Jong-Sik Park, Eun-Ju Kim, Hyung-Joon Gil
  • Patent number: 7303763
    Abstract: Oral conjugated estrogen formulations are disclosed and described. In one aspect, the oral formulation may be a tablet having a core and one or more coatings thereon. In addition to conjugated estrogen ingredients, the core may include one or more organic excipients and one or more inorganic excipients. In one aspect, the organic excipients may include less than about 20% w/w of a cellulose ingredient, and less than about 50% w/w of a sugar ingredient. In another aspect, the inorganic excipients may include less than about 10% w/w of a calcium phosphate tribasic ingredient. In yet another aspect, the formulation does not crack when stored at about 40° C. and about 75% relative humidity for about 2 months.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: December 4, 2007
    Assignee: Watson Laboratories, Inc.
    Inventor: Thomas Ho
  • Patent number: 7276250
    Abstract: Sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; methods for making the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof; and methods for using the sustained release formulations of oxymorphone or pharmaceutically acceptable salts thereof to treat patients suffering from pain are provided.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: October 2, 2007
    Assignee: Penwest Pharmaceuticals Company
    Inventors: Anand R. Baichwal, Huai-Hung Kao, Troy W. McCall
  • Patent number: 7270831
    Abstract: Sustained release oral solid dosage forms of opioid analgesics are provided as multiparticulate systems which are bioavailable and which provide effective blood levels of the opioid analgesic for at least about 24 hours. A unit dose of the opioid analgesic contains a plurality of substrates including the opioid analgesic in sustained release form. The substrates have a diameter from about 0.1 mm to about 3 mm.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: September 18, 2007
    Inventors: Benjamin Oshlack, Mark Chasin
  • Publication number: 20070196491
    Abstract: A pharmaceutical dosage form such as a capsule, a conventional or orally disintegrating tablet capable of delivering a nitrogen (N)-containing therapeutic agent having a pKa in the range of from about 5 to 14 into the body in a sustained-released fashion, in order to be suitable for a twice- or once-daily dosing regimen, comprises at least one organic acid, which solubilizes the therapeutic agent the drug prior to releasing it into the hostile intestinal environment wherein said weakly basic drug is practically insoluble. The unit dosage form is composed of a multitude of multicoated particulates (i.e., immediate-release beads, sustained-release beads and/or one or more timed, pulsatile-release bead populations) is designed in such a way that said weakly basic drug and said organic acid do not come into close contact during processing and/or storage for in-situ formation of acid addition compounds while ensuring that the acid is not depleted prior to completion of the drug release.
    Type: Application
    Filed: January 29, 2007
    Publication date: August 23, 2007
    Applicant: EURAND, INC.
    Inventor: Gopi M. Venkatesh
  • Patent number: 7235253
    Abstract: A method is disclosed for stabilizing a physiologically active peptide in a process of preparing a powder containing the physiologically active peptide by drying an aqueous liquid containing the physiologically active peptide, wherein the method comprises adding to the aqueous liquid at least one compound selected from the group consisting of a nonionic surfactant, a water-soluble, nonionic, organic binder, hydrogenated lecithin, and mannitol.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 26, 2007
    Assignee: JCR Pharmaceuticals Co., Ltd.
    Inventors: Yoshinobu Hanyu, Mariko Okada, Chihiro Shindo, Satoshi Nishimuro, Tetsuo Yokoyama, Masato Horie
  • Patent number: 7229640
    Abstract: A controlled release or delayed release formulation contains a selective serotonin reuptake inhibitor (SSRI) such as paroxtine.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: June 12, 2007
    Assignee: SmithKline Beecham p.l.c.
    Inventors: Graham Stanley Leonard, David Philip Elder
  • Patent number: 7229642
    Abstract: Disclosed herein is a oral extended release dosage form comprising a plurality of granules of an effective amount of a pharmaceutically active compound, at least one amino acid, and an intragranular polymer in which the granule is dispersed within a hydrophilic extragranular polymer matrix which is more rapidly hydrating than the intragranular polymer. The amino acid is selected for hydropathy characteristics depending on solubility characteristics of the active compound.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: June 12, 2007
    Assignee: Scolr, Inc.
    Inventors: A. Reza Fassihi, Thomas Dürig
  • Patent number: 7214387
    Abstract: The invention provides sustained release formulations of metformin or a pharmaceutically acceptable salt thereof, and methods of treating diabetes by administering to a patient a therapeutically effective amount of a sustained release formulation of metformin or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: May 8, 2007
    Assignee: Penwest Pharmaceuticals Company
    Inventors: Pradeep P. Sanghvi, Sara Ketsela
  • Patent number: 7211275
    Abstract: Composite materials comprising a water-soluble compound adsorbed onto a basic inorganic material and a bio-degradable polymer which yields acidic degradation products, methods of producing same, and methods of use thereof are described, wherein the composite materials are designed so as to provide controlled release of the water soluble molecule.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: May 1, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Jackie Y. Ying, Tseh-Hwan Yong
  • Patent number: 7195769
    Abstract: A pharmaceutical composition of anti-tubercular drugs for oral use comprising Rifampicin and/or Isoniazid wherein the bioavailability of Rifampicin and/or other drugs is enhanced. Preferably the bioavailability of Rifampicin is enhanced by preventing its degradation caused by presence of Isoniazid. Rifampicin and/or Isoniazid may be present in delayed release and/or extended release form such that minimal amount of the drug is dissolved between pH 1 and 4. preferably delayed release of Rifampicin and/or Isoniazid is achieved by treating the drugs with pH sensitive polymers.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: March 27, 2007
    Assignee: Panacea Biotec Limited
    Inventors: Amarjit Singh, Rajesh Jain
  • Patent number: 7147870
    Abstract: The present invention provides an osmotic device containing controlled release pseudoephedrine in the core in combination with a rapid release H1 antagonist in an external coat. A wide range of H1 antagonist antihistamines, especially fexofenadine, can be used in this device. Particular embodiments of the invention provide osmotic devices having predetermined release profiles. One embodiment of the osmotic device includes an external coat that has been spray coated rather compression coated onto the device. The device with spray coated external core is smaller and easier to swallow than the similar device having a compression coated external coat. The device is useful for the treatment of respiratory congestion related disorders and allergy related disorders. The present devices provide PS and an H1 antagonist according to specific release profiles in combination with specific formulations.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: December 12, 2006
    Assignee: Osmotica Corp.
    Inventors: Joaquina Faour, Marcelo A. Ricci
  • Patent number: 7132108
    Abstract: Biodegradable and biocompatible polymeric microspheres encapsulating Salmonella enteritidis are administered to chickens to provide the chickens with sustained protection against S. enteritidis infections.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: November 7, 2006
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Jimmy Kwang, Xueqin Chen, Tai-Shung Chung, Wei Liu
  • Patent number: 7105180
    Abstract: The invention relates to a novel benzimidazole formulation and to a process for its production. The benzimidazole formulation comprises a layer comprising the benzimidazole compound together with an acidic reacting compound.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 12, 2006
    Assignee: Ratiopharm GmbH
    Inventor: Benoit Schmitt
  • Patent number: 7094426
    Abstract: The present invention relates to new stable enteric coated pharmaceutical dosage forms for oral use containing Omeprazole or Lansoprazole, to a formulation and a method for the manufacture of such a dosage forms, and to a method of gastric acid pump inhibition and providing gastrointestinal cytoprotective benefit by using them.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: August 22, 2006
    Assignee: Sage Pharmaceuticals, Inc.
    Inventor: Jivn-Ren Chen
  • Patent number: 7070806
    Abstract: A stable solid controlled release formulation having a coating derived from an aqueous dispersion of a hydrophobic acrylic polymer includes a substrate including an active agent selected from the group consisting of a systemically active therapeutic agent, a locally active therapeutic agent, a disinfecting and sanitizing agent, a cleansing agent, a fragrance agent and a fertilizing agent, overcoated with an aqueous dispersion of the plasticized water-insoluble acrylic polymer. The formulation provides a stable dissolution of the active agent which is unchanged after exposure to accelerated storage conditions.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: July 4, 2006
    Assignee: Purdue Pharma LP
    Inventors: Benjamin Oshlack, Mark Chasin, Frank Pedi, Jr.
  • Patent number: 7060295
    Abstract: The compositions and dosage forms of the invention are clinically useful as methods for increasing the effectiveness, efficiency and safety of biguanides (metformin) and/or sulfonylureas in the prevention and treatment of insulin resistance and diabetes mellitus, alone or in combination, as a nutrient for humans. The carefully chosen active ingredients of the invention are designed in a modular fashion to prevent and rectify adverse events associated with insulin resistance syndrome and diabetes mellitus, and with the clinical use of biguanides (metformin) and/or the sulfonylureas. These modules are: (1) Mitochondrial Metabolic Group, (2) Plasma and Mitochondrial Membrane Integrity Group, (3) Nocturnal Group and, (4) Insulin Alternative Group. When used in concert with a biguanide, a sulfonylurea or with a combination of both, the invention will broaden the clinical usefulness of these drugs.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: June 13, 2006
    Assignee: ChronoRX LLC
    Inventors: Kenneth T. Richardson, Don C. Pearson
  • Patent number: 7041316
    Abstract: The present invention relates to new stable enteric coated pharmaceutical dosage forms for oral use containing Omeprazole or Lansoprazole, to a formulation and a method for the manufacture of such a dosage forms, and to a method of gastric acid pump inhibition and providing gastrointestinal cytoprotective benefit by using them.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: May 9, 2006
    Assignee: Sage Pharmaceuticals, Inc.
    Inventor: Jivn-Ren Chen
  • Patent number: 7011849
    Abstract: Formulations are provided herein which allow for a once daily dosing regimen for amoxicillin and clavulanic acid.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: March 14, 2006
    Assignee: Beecham Pharmaceuticals (Pte) Limited
    Inventors: Kevin H. Storm, Creighton P. Conley, John A. Roush
  • Patent number: 7008641
    Abstract: The present invention provides an osmotic device containing controlled release venlafaxine in the core in combination with an anti-psychotic agent in a rapid release external coat. A wide range of anti-psychotic agents can be used in this device. Particular embodiments of the invention provide osmotic devices having predetermined release profiles. One embodiment of the osmotic device includes an external coat that has been spray-coated rather compression-coated onto the device. The device with spray-coated external core is smaller and easier to swallow than the similar device having a compression-coated external coat. The device is useful for the treatment of depression, anxiety or psychosis related disorders.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: March 7, 2006
    Assignee: Osmotica Corp.
    Inventors: Joaquina Faour, Juan Vergez
  • Patent number: 6994873
    Abstract: This invention refers to: multiparticulate formulations of Lithium salts for oral administration constituted by either modified release granules or mixtures of modified and conventional release granules, suitable for once-a-day administration also at high strengths of Lithium salts, and to the preparation process of said formulations.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: February 7, 2006
    Assignee: Valpharma S.A.
    Inventors: Roberto Valducci, Tiziano Alighieri, Serozh Avanessian
  • Patent number: 6974591
    Abstract: The invention concerns a method for producing a controlled-release pharmaceutical preparation with a particle-containing coating, the coating being derived from an aqueous dispersion of a film-forming water insoluble polymer and a water soluble pore-forming agent. By suspending, instead of dissolving the pore-forming agent, the resulting coating will contain particles of the pore-formers with a predetermined size that creates, when disintegrated or dissolved in the body fluid, canals or a network of pores through the polymer film. Due to this network, the film will get a good mechanical stability and are left intact after the release of the drug.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: December 13, 2005
    Assignee: Watson Laboratories, Inc.
    Inventors: John Kendrup, Peter Fyhr
  • Patent number: 6969526
    Abstract: A controlled release or delayed release formulation contains a selective serotonin reuptake inhibitor (SSRI) such as paroxtine.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: November 29, 2005
    Assignee: SmithKline Beecham p.l.c.
    Inventors: Graham Stanley Leonard, David Philip Elder
  • Patent number: 6964780
    Abstract: The invention provides controlled-release formulations for oral administration containing a cGMP PDE-5 inhibitor. The formulations are useful, inter alia, in the treatment or prevention of sexual dysfunction.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: November 15, 2005
    Assignee: Pfizer Inc.
    Inventors: Elizabeth King, Ross James Macrae
  • Patent number: 6960357
    Abstract: The invention provides a controlled release dissolution and diffusion devices which can deliver an active ingredient at a constant or controlled-variable rate comprising an active ingredient and dissolution modifiers and/or an insoluble matrix. The compressed core is coated, except for at least one exposed face, with a coating containing an insoluble polymer or a mixture of an insoluble polymer and pore-forming elements said pore-forming elements having a dissolution rate slower that the release rate so that the pore formation is completed after release of the active ingredients and the residual inert structures disintegrate.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: November 1, 2005
    Assignee: Mistral Pharma Inc.
    Inventor: Sham Chopra
  • Patent number: 6958161
    Abstract: A modified release preparation having one or more coated core elements, each core element including an active ingredient and having a modified release coating, wherein a stabilising coat is provided between each core element and its modified release coating so that, upon in vitro dissolution testing, the amount of active ingredient released at any time on a post-storage dissolution profile is within 40 percentage points of the amount of active ingredient released at any time on a pre-storage dissolution profile.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: October 25, 2005
    Assignee: F H Faulding & Co Limited
    Inventors: David Hayes, Angelo LoPore, Stefan Lukas, Eugene Quinn
  • Patent number: 6946146
    Abstract: The present invention is directed to a coating composition for coating a solid dosage form of a medicament, where the coating composition controls the release of the medicament, said coating composition comprising (a) at least 50% (w/w) by dry weight of a water insoluble polymer insoluble in both acidic, basic and neutral pH, present in the form of an aqueous latex dispersion, (b) a water soluble non-polymeric component present in a weight ratio of about 5 to about 50% (w/w) by dry weight of the coating, having a molecular weight of less than about 15,000 daltons and water solubility in excess of 5 grams per 100 grams of water at room temperature at 1 atm pressure, said water soluble non-polymeric component being organic and either solid or liquid; said ratio of water insoluble polymer to water soluble non-polymeric component ranging from about 95:5 to about 1:1, the solid content in the coating composition ranges from about 5% to about 25%, said water soluble component being completely dissolved in the aqueo
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: September 20, 2005
    Assignee: Nostrum Pharmaceuticals Inc.
    Inventor: Nirmal Mulye
  • Patent number: 6946145
    Abstract: Block copolymers based on poly(ortho esters) containing amine groups. These block copolymers have both hydrophilic and hydrophobic blocks. They form micelles in aqueous solution, making them suitable for encapsulation or solubilization of hydrophobic or water-insoluble materials; and they also form bioerodible matrices for the sustained release of active agents.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: September 20, 2005
    Assignee: A.P. Pharma, Inc.
    Inventors: Steven Y. Ng, Jorge Heller
  • Patent number: 6939560
    Abstract: The present invention provides a pharmaceutical composition which is substantially free of unpleasant tastes and orally administrable which comprises: (a) an active medicament, (b) an inner coating layer comprising an oil substance having a melting point at a range of from about 50° C. to about 100° C., (c) an outer coating layer comprising at least a polymeric substance.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 6, 2005
    Assignee: Pharmacia & Upjohn Company
    Inventors: Robert W. Shen, Gerald A. Walter
  • Patent number: 6936275
    Abstract: Disclosed herein is a oral extended release dosage form comprising a plurality of granules of an effective amount of a pharmaceutically active compound, at least one amino acid, and an intragranular polymer in which the granule is dispersed within a hydrophilic extragranular polymer matrix which is more rapidly hydrating than the intragranular polymer. The amino acid is selected for hydropathy characteristics depending on solubility characteristics of the active compound.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: August 30, 2005
    Assignee: Scolr, Inc.
    Inventors: A. Reza Fassihi, Thomas Dürig
  • Patent number: 6932981
    Abstract: A fast disintegrating controlled release oral composition comprising a core material containing cefuroxime axetil present as controlled release form, the cefuroxime axetil being provided with an outer coating of a copolymer selected from aqueous dispersions of enteric methacrylic acid and methacrylic acid esters anionic copolymers having carboxyl group as the functional group or mixtures thereof and an inner coating of a sustained-release copolymer selected from aqueous dispersions of acrylate and methacrylate pH independent copolymers having quaternary ammonium group as a functional group or mixtures thereof, and optionally probenecid. Additionally, the coating composition may contain plasticizers. The composition is suitable for once daily administration.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: August 23, 2005
    Assignee: Lupin Laboratories, Ltd.
    Inventors: Himadri Sen, Rajesh Suresh Kshirsagar, Anupa Ramesh Menjoge
  • Patent number: 6926907
    Abstract: The present invention is directed to drug dosage forms that release an agent that raises the pH of a patient's gastrointestinal tract, followed by a non-steroidal anti-inflammatory drug. The dosage form is designed so that the NSAID is not released until the intragastric pH has been raised to a safe level. The invention also encompasses methods of treating patients by administering this coordinated release, gastroprotective, antiarthritic/analgesic combination unit dosage form to achieve pain and symptom relief with a reduced risk of developing gastrointestinal damage such as ulcers, erosions and hemorrhages.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: August 9, 2005
    Assignee: Pozen Inc.
    Inventor: John R. Plachetka
  • Patent number: 6902743
    Abstract: Novel burst-free, sustained release biocompatible and biodegrable microcapsules which can be programmed to release their active core for variable durations ranging from 1-100 days in an aqueous physiological environment. The microcapsules are comprised of a core of polypeptide or other biologically active agent encapsulated in a matrix of poly(lactide/glycolide) copolymer having a molar composition of lactide/glycolide from 90/10 to 40/60, which may contain a pharmaceutically-acceptable adjuvant, as a blend of uncapped free carboxyl end group and end-capped forms ranging to ratios from 100/0 to 1/99.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: June 7, 2005
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Jean A. Setterstrom, Thomas R. Tice, Elliot Jacob, Robert H. Reid, John van Hamont, Edgar C. Boedecker, Ramassubbu Jeyanthi, Phil Friden, F. Donald Roberts, Charles E. McQueen, Apurba Bhattacharjee, Alan Cross, Jerald Sadoff, Wendell Zollinger
  • Patent number: 6899896
    Abstract: A controlled release dosage form for sertraline has a core comprising a sertraline-containing composition and a water-swellable composition wherein the water-swellable composition is in a separate region within the core. A coating around the core is water-permeable, water-insoluble, and has at least one delivery port therethrough. In one embodiment, the dosage form releases sertraline to the use environment at an average rate of 6 to 10 wt % per hour from the second to the twenth hour after introduction to a use environment and less than about 25 wt % for the first two hours and at least 70 wt % by the twelfth hour, where the percentages correspond to the mass of drug released from the tablet divided by the total mass of drug originally present in the tablet.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: May 31, 2005
    Assignee: Pfizer Inc
    Inventors: William J. Curatolo, Kenneth C. Waterman, Avinash G. Thombre, Michael B. Fergione, Michael C. Roy, Leah A. Appel, Danni Supplee, Dwayne T. Friesen, Mark B. Chidlaw, Ronald A. Beyerinck
  • Patent number: 6893661
    Abstract: An extended release dosage composition of pharmaceutically active substances that have a water contact angle (?) such that cos ? is between +0.9848 and ?0.9848 presented as a matrix tablet containing the said pharmaceutically active substances, with/without suitable pharmaceutical excipients in intimate mixture with two groups of intelligent polymers having opposing wettability characteristics, one demonstrating a stronger tendency towards hydrophobicity and the other a stronger tendency towards hydrophilicity, the polymer combination being between the ratios of 1:50 and 50:1 amounts effective to control the release of said pharmaceutically active substances in a mathematically predictable manner, wherein the polymer demonstrating a stronger tendency towards hydrophobicity is not less than 5% wt/wt and preferably between 5-70% wt/wt of the final formulation composition.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: May 17, 2005
    Assignee: Biovail Corporation
    Inventors: Isa Odidi, Amina Odidi
  • Patent number: 6893662
    Abstract: The present invention relates to a pharmaceutical composition in a solid unit dosage form for oral administration in a human or lower animal comprising: a. a safe and effective amount of a therapeutically active agent; b. an inner coating layer selected from the group consisting of poly(methacrylic acid, methyl methacrylate) 1:2, poly(methacrylic acid, methyl methacrylate) 1:1, and mixtures thereof; and c. an outer coating layer comprising an enteric polymer or film coating material; wherein the inner coating layer is not the same as the outer coating layer; wherein if the inner coating layer is poly(methacrylic acid, methyl methacrylate) 1:1 then the outer coating layer is not poly(methacrylic acid, methyl methacrylate) 1:2 or is not a mixture of poly(methacrylic acid, methyl methacrylate) 1:1 and poly(methacrylic acid, methyl methacrylate) 1:2; and wherein the inner coating layer and the outer coating layer do not contain any therapeutically active agent.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: May 17, 2005
    Assignee: The Procter & Gamble Company
    Inventors: Gregory Paul Dittmar, Joseph Michael Amante, Tony Ryan Cronk, Daniel Gary Newby
  • Patent number: 6887857
    Abstract: The present invention is directed to the use of microparticles to protect the pharmaceutical effectiveness of a pharmaceutically active agent. According to one embodiment, a pharmaceutically acceptable suspension is provided that comprises microparticles and a pharmaceutically active agent. This pharmaceutically acceptable suspension is then exposed to a component or condition that is incompatible with the pharmaceutically active agent, such that the microparticles provide a pharmaceutical effectiveness that is greater than it would have been in the absence of the microparticles. Preferably, the microparticles result in a pharmaceutical effectiveness of the pharmaceutically active agent that is at least 10% greater than the pharmaceutical effectiveness of the pharmaceutically active agent would have been in the absence of the micro particles. Polymer microparticles, such as polystyrene microparticles, are one preferred class of microparticles. The microparticles preferably range from 0.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: May 3, 2005
    Assignee: SciMed Life Systems, Inc.
    Inventors: Wendy Naimark, Maria Palasis
  • Patent number: 6878386
    Abstract: Bacterial infections may be treated using a high dosage regimen of amoxycillin and potassium clavulanate. Preferably, the dosage is provided by a bilayer tablet.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: April 12, 2005
    Assignee: Beecham Pharmaceuticals (Pte) Limited
    Inventors: Creighton P. Conley, John A. Roush, Kevin H. Storm
  • Patent number: 6846809
    Abstract: The present invention relates generally to the fields of nucleic acid transfection. More particularly, it concerns novel polycation:nucleic acid compositions, methods of preparation of such compositions and methods of transfecting cells with such compositions.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: January 25, 2005
    Assignee: Board of Regents, The University of Texas System
    Inventors: Richard J. Cristiano, Motoyuki Yamashita
  • Patent number: 6838094
    Abstract: A tablet formulation which comprises a core containing a pharmaceutically active material, coated with a release retarding coating, surrounded by a casing layer which includes a second pharmaceutically active material.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: January 4, 2005
    Assignee: SmithKline Beecham p.l.c.
    Inventors: Francis Walter Grimmett, Nigel Philip McCreath Davidson
  • Patent number: 6838054
    Abstract: Biochemical devices comprising a sensing surface that is at least partially covered by a nanocrystalline metal oxide semiconductor film which provides a recipient surface for immobilizing biochemical species on. The film has a mesoporous surface that gives up to a 1000 increase in biochemical species adsorption when compared to a flat surface. The biochemical devices comprising these surfaces can be optical and electrochemical biosensors and reactors for synthetic or biodegradation reactions.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: January 4, 2005
    Assignee: Imperial College of Science, Technology and Medicine
    Inventor: James Robert Durrant
  • Patent number: 6831070
    Abstract: The present invention provides methods of delivering a secreted protein into the bloodstream of a mammal. A nucleic acid molecule encoding the protein is introduced into the gastrointestinal tract of the mammal, and the nucleic acid molecule enters an intestinal epithelial cell, where the protein is produced and secreted into the bloodstream of the mammal.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: December 14, 2004
    Assignee: Regents of the University of California
    Inventors: Michael German, Ira D. Goldfine, Stephen S. Rothman
  • Patent number: 6827947
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations to provide modified release comprising a dispersion which includes: a) an acrylic polymer, b) a vinyl acetate polymer, and c) a water-containing liquid. The film coat is useful for the achievement of modified release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: December 7, 2004
    Assignee: AstraZeneca AB
    Inventors: Jan-Erik Löfroth, Staffan Schantz, Anders Welin, Lars Johan Pontus de Verdier Hjartstam
  • Patent number: 6824790
    Abstract: This invention comprises pharmaceutical compositions for administering a polycyclic, aromatic, antioxidant or anti-inflammatory compound to an animal. Particularly provided are proliposomal compositions that are advantageously used to deliver polycyclic, aromatic, antioxidant or anti-inflammatory compounds to the gastrointestinal tract after oral administration.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 30, 2004
    Assignee: EnzRel Inc.
    Inventor: Milton Yatvin
  • Patent number: 6814979
    Abstract: Disclosed is an osmotic pharmaceutical delivery system comprising (a) a semi-permeable wall that maintains its integrity during pharmaceutical delivery and which has at least one passage therethrough; (b) a single, homogeneous composition within said wall, which composition consists essentially of (i) a pharmaceutically active agent, (ii) at least one non-swelling solubilizing agent which enhances the solubility of the pharmaceutically active agent; (iii) at least one non-swelling osmotic agent and (iv) a non-swelling wicking agent dispersed throughout the composition which enhances the surface area contact of the pharmaceutical agent with the incoming aqueous fluid.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: November 9, 2004
    Assignee: Shire Laboratories, Inc.
    Inventors: Edward M. Rudnic, Beth A. Burnside, Henry H. Flanner, Sandra E. Wassink, Richard A. Couch, Jill E. Pinkett
  • Patent number: 6797704
    Abstract: The present invention features methods of administering a therapeutic agent to a patient's lymph nodes by instillation of microparticles or nanoparticles comprising a biocompatible polymer and the therapeutic agent into the patient's bladder. The invention also features methods of modulating a patient's immune response and methods of systemic delivery of a therapeutic agent systemically using the administration methods of the invention.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: September 28, 2004
    Assignee: The Johns Hopkins University
    Inventors: Kam W. Leong, Michael F. Haller, Bernard A. Malavaud, Catherine S. Le Visage
  • Patent number: 6794464
    Abstract: A membrane or matrix for controlling the permeation rate of a drug, where the membrane or matrix includes a siloxane-based elastomer composition which contains at least one elastomer and optionally a non-crosslinked polymer. The elastomer composition includes poly(alkylene oxide) groups, and the poly(alkylene oxide) groups are present as blocks in a chain of the elastomer or the polymer, or as blocks and alkoxy-terminated grafts of polysiloxane units, the blocks or blocks and grafts being linked to the polysiloxane units by silicon-carbon bonds, with at least three blocks being present in the elastomer or polymer chain. Methods for the preparation of the elastomer composition are also disclosed.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: September 21, 2004
    Assignee: Schering Oy
    Inventors: Harri Jukarainen, Tommi Markkula, Juha Ala-Sorvari, Matti Lehtinen, Jarkko Ruohonen
  • Patent number: RE39069
    Abstract: The present invention provides a simple and improved multi-layered osmotic device (1) that is capable of delivering a first active agent in an outer lamina (2) to one environment of use and a second active agent in the core (5) to another environment of use. Particular embodiments of the invention provide osmotic devices in which the first and second active agents are similar or dissimilar. An erodible polymer coat (3) between an internal semipermeable membrane (4) and a second active agent-containing external coat (2) comprises poly(vinylpyrrolidone)-(vinyl acetate) copolymer. This particular erodible polymer results in an improved multi-layered osmotic device possessing advantages over related devices known in the art. The active agent in the core (5) is delivered through a pore (6) containing an erodible plug (7). The osmotic device (1) can be coated by a final finish coat (8).
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: April 18, 2006
    Assignee: Osmotica Corp.
    Inventors: Joaquina Faour, Jorge E. Mayorga
  • Patent number: RE39149
    Abstract: An oral dosage form of azithromycin which does not exhibit an adverse food effect; Specific azithromycin oral dosage forms including tablets, powders for oral suspensions and unit dose packets; Methods of treating microbial infections with the dosage forms; And therapeutic packages containing the dosage forms.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: June 27, 2006
    Assignee: Pfizer Inc.
    Inventors: William J. Curatolo, George H. Foulds, Hylar L. Friedman
  • Patent number: RE39239
    Abstract: The present invention provides methods of treating early morning pathologies using a time-specific controlled release dosage formulation which is administered prior to sleep, and which permits or achieves delivery of a pharmaceutically active agent effective for the treatment of the specific early morning pathology to be treated, at about the time of awakening. The time-specific controlled release dosage formulation comprises (1) a core including the pharmaceutically active agent(s) effective for the treatment of the early morning pathology, and (2) a swellable polymeric coating layer substantially surrounding the core. The swellable polymeric coating layer delays the release of the pharmaceutically active agent from the core for a predetermined period of time dependent upon the thickness of the swellable polymeric coating layer, to effect delivery of the pharmaceutically active agent at about the time of awakening.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: August 15, 2006
    Assignee: Polichem SA
    Inventors: Cesare Busetti, Tiziano Crimella