Cellulose Derivatives Patents (Class 424/494)
  • Patent number: 7008646
    Abstract: A dry powder cubic gel precursor comprising an encapsulating compound, an amphiphile capable of forming a cubic liquid crystalline phase, and optionally a solvent. The encapsulating compound (A), amphiphile (B), and optional solvent (C) are present in mass fractions relative to each other such that 1.0=a+b+c wherein a is the mass fraction of A, b is the mass fraction of B, and c is the mass fraction of C. Further, 1.0>a>0, 1.0>b>0, 1.0>c>0 and a, b, and c do not fall within a cubic liquid crystalline phase region on a phase diagram representing phase behavior of A, B, and C.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: March 7, 2006
    Inventors: Patrick Thomas Spicer, William Broderick Small, II, Matthew Lawrence Lynch
  • 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: 6991807
    Abstract: Disclosed are antibiotic products for delivering at least two different antibiotics, wherein the products are comprised of at least three or four dosage forms with different release profiles and the at least two different antibiotics comprise at least one protein synthesis inhibiting antibiotic and at least one non-protein synthesis inhibiting antibiotic.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: January 31, 2006
    Assignee: Advancis Pharmaceutical, Corp.
    Inventors: Edward M. Rudnic, James D. Isbister, Donald J. Treacy, Jr., Sandra E. Wassink
  • Patent number: 6989159
    Abstract: Once daily pharmaceutical compositions containing lithium carbonate in the form of coated granules.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: January 24, 2006
    Assignee: JDS Pharmaceuticals, LLC
    Inventor: Giulio Tarro
  • Patent number: 6984404
    Abstract: Disclosed are methods using pulsed laser ablation to prepare coated drug particles of uniform size and thickness. The coated drug particles ranged in size from several nanometers to several millimeters in diameter size, and were coated with organic polymer particle having average diameter sizes from about 1 to 50 nm. In illustrative embodiments, coated drug particles or drug delivery particles are disclosed comprising a biodegradable or biocompatible polymer coating having controlled thickness and controlled coating uniformity, that offer superior pharmaceutical properties for controlled delivery and increased bioavailability.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: January 10, 2006
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: James D. Talton, Guenther Hochhaus, Rajiv K. Singh, James M. Fitz-Gerald
  • Patent number: 6974593
    Abstract: Particles of water insoluble biologically active compounds, particularly water-insoluble drugs, with an average size of 100 nm to about 300 nm, are prepared by dissolving the compound in a solution then spraying the solution into compressed gaz, liquid or supercritical fluid in the presence of appropriate surface modifiers.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: December 13, 2005
    Assignees: Jagotec AG, Board of Regents, The University of Texas System
    Inventors: Inge B Henriksen, Awadesh K. Mishra, Gary W. Pace, Keith P. Johnston, Simon Mawson
  • Patent number: 6974592
    Abstract: Microcapsules comprising an agglomeration of primary microcapsules, each individual primary microcapsule having a primary shell and the agglomeration being encapsulated by an outer shell, may be prepared by providing an aqueous mixture of a loading substance and a shell material, adjusting pH, temperature, concentration and/or mixing speed to form primary shells of shell material around the loading substance and cooling the aqueous mixture until the primary shells agglomerate and an outer shell of shell material forms around the agglomeration. Such microcapsules are useful for storing a substance and for delivering the substance to a desired environment.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: December 13, 2005
    Assignee: Ocean Nutrition Canada Limited
    Inventor: Nianxi Yan
  • Patent number: 6969530
    Abstract: Described herein are microcapsules and emulsions prepared from low Bloom gelatin and methods of making and using thereof.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: November 29, 2005
    Assignee: Ocean Nutrition Canada Ltd.
    Inventors: Jonathan Michael Curtis, Wei Zhang, Yulai Jin
  • Patent number: 6962717
    Abstract: A pharmaceutical composition for slow release of active ingredient in the gastrointestinal tract, comprising a plurality of active ingredient-containing particles coated with a material insoluble in gastric and intestinal juices, where the particles have as core a homogeneous mixture comprising an active pharmaceutical ingredient and a polymer insoluble in gastric and intestinal juices, with an average internal pore diameter not exceeding 35 ?m, makes efficient and pH-independent delaying of release possible even with comparatively small amounts of polymer. It is additionally distinguished by a long shelf life and is particularly suitable also for nonspherical particles.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: November 8, 2005
    Assignee: Disphar International B.V.
    Inventors: Gerald Huber, Peter Gruber
  • 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: 6956043
    Abstract: A pharmaceutical composition in the form of a solid dispersion comprising a macrolide, e.g. a rapamycin or an ascomycin, and a carrier medium.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: October 18, 2005
    Assignee: Novartis AG
    Inventors: Patrice Guitard, Barbara Haeberlin, Rainer Link, Friedrich Richter
  • Patent number: 6951657
    Abstract: The invention concerns coated particles based on granulated microcrystals of ibuprofen, its pharmaceutically acceptable isomers and salts, characterized in that they comprise a coating obtained in a fluidized bed apparatus with a hydroalcoholic dispersion consisting of a mixture comprising (A) 5 to 50% by weight of ethylcellulose relative to ibuprofen; (B) 10 to 60% by weight of hydroxypeopylmethylcellulose relative to the ethylcellulose; and (C) 1 to 40% by weight of silica with antistatic and permeabilizing properties relative to the ethylcellulose, the resulting coating, whereof at least one of the constituents can be used for granulating the ibuprofen microcrystals resulting in said particles, thereby masking the unpleasant taste of ibuprofen and significantly reducing its irritating effect on the throat after deglutition and substantially immediate release of ibuprofen when the particles are placed in an aqueous medium.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: October 4, 2005
    Assignee: Laboratoires des produits Ethiques Ethypharm SA
    Inventors: Jean-Marc Zuccarelli, Charles André Chauveau, Gilles DeMichelis, Karine Jean
  • 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: 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: 6933380
    Abstract: The present invention provides low-residual-solvent containing excipients with residual solvent less than <3000 ppm. Most of the excipients are required to first be modified to become more water absorbing such as by attaching a water absorbing radical, e.g., (—CH2COONa) to the carbinol groups (—CH2OH) of the excipients to form a —CH2—O—CH2COONa linkage. The linkage of the water-absorbing groups to e excipients improves the water absorbing property of the excipients, which facilitates the replacing residual solvent with water. The residual solvent can be extracted from the excipient by way of mixing with a solvent/water solution containing (1) about 75-95% (v/v) isopropanol and about 5-25% water (v/v); (2) about 65-95% acetone and about 5-35% water; and (3) about 60-85% methanol and about 15-40% water.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: August 23, 2005
    Assignee: Yung-Zip Chemical Ind. Co., Ltd.
    Inventors: Yun-Peng Huang, Fangchan Lee, Jer-Yen Shaw
  • Patent number: 6932984
    Abstract: A method for microencapsulation of substances is provided. The substance(s) is/are dissolved or dispersed in an organic solvent of the kind that is partially miscible in water media. This organic solution is then mixed with an aqueous solution, which is saturated with an organic solvent and an emulsifier to form an emulsion. The emulsion is then poured into water under continuous agitation for the extraction of residual solvent. The formation of the solid capsules takes place during this extraction process. The capsules are undergone to further purification, whereby the microcapsules can be separated from the water and dried. By conditions of incubation of microcapsules in water-containing formulations the wall-softening process takes place. The unique system for controlled releasing the ingredients from microcapsules is based on the above-mentioned process.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: August 23, 2005
    Assignee: Tagra Biotechnologies Ltd.
    Inventors: Vladimir Babtsov, Yury Shapiro, Emma Kvitnitsky
  • Patent number: 6913768
    Abstract: A pharmaceutical composition comprises a once-a-day sustained release formulation of at least one amphetamine salt which provides mean plasma concentration profile aspects in human ADHD patients which are substantially the same as that provided by ADDERALL XR® type pulsatile formulations.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: July 5, 2005
    Assignee: Shire Laboratories, Inc.
    Inventors: Richard A. Couch, Beth A. Burnside, Rong-Kun Chang
  • Patent number: 6911217
    Abstract: A controlled release bead comprises: (i) a core unit of a substantially water-soluble or water-swellable inert material; (ii) a first layer on the core unit of a substantially water-insoluble polymer; (iii) a second layer covering the first layer and containing an active ingredient; and (iv) a third layer of polymer on the second layer effective for controlled release of the active ingredient, wherein the first layer is adapted to control water penetration into the core. A method of producing the controlled release bead is also disclosed.
    Type: Grant
    Filed: November 11, 1999
    Date of Patent: June 28, 2005
    Assignee: Pharmacia AB
    Inventors: Torkel Gren, Anders Ringberg, Martin Wikberg, Randy J. Wald
  • Patent number: 6905709
    Abstract: A stabilized solid controlled release dosage form having a coating derived from an aqueous dispersion of ethylcellulose is obtained by overcoating a substrate including a therapeutically active with an aqueous dispersion of ethylcellulose and then curing the coated substrate at a temperature and relative humidity elevated to a suitable level above ambient conditions until the coated dosage form attains a stabilized dissolution profile substantially unaffected by exposure to storage conditions of elevated temperature and/or elevated relative humidity.
    Type: Grant
    Filed: November 12, 2001
    Date of Patent: June 14, 2005
    Assignee: Purdue Pharma, LP
    Inventors: Benjamin Oshlack, Mark Chasin, Frank Pedi, Jr.
  • Patent number: 6902746
    Abstract: The present invention provides oral pharmaceutical compositions for acetic acid class of non-steroidal anti-inflammatory drug (NSAID), particularly ketorolac. The pharmaceutical composition contains a core, a drug layer (which comprises the drug, a binder, and a disintegrant), a protecting layer, and an enteric coating layer. The oral pharmaceutical compositons are particularly useful for treating patients with moderate to acute pain. The present invention also provides a method for making the pharmaceutical compositions and a method for using the pharmaceutical compositions.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: June 7, 2005
    Assignee: Yung Shin Pharmaceutical Industrial Co., Ltd.
    Inventors: Fang-Yu Lee, Shan-Chiung Chen, Ping-Kuen Chen, Han-Chiang Kuo
  • Patent number: 6890550
    Abstract: Method of preventing parturient hypocalcemia and milk fever (parturient paresis) in lactating animals comprising administering to the animal during the dry period a compound which reduces absorption of calcium from the drinking water and/or from the ration of said animal. The method is based on the powerful, natural calcium regulating mechanisms and is applicable under commercial farming conditions.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: May 10, 2005
    Assignee: RJ Innovation
    Inventor: Rolf Jess Jorgensen
  • Patent number: 6890561
    Abstract: There is provided an orally-administrable formulation for the controlled release or stable storage of a granulated isoflavone-enriched fraction or mixture of such fractions, comprising at least one granulated isoflavone-enriched fraction and at least one carrier, diluent or excipient therefor. Preferably, the formulation is characterized in that the total in vitro dissolution time of said formulation required for release of 75% of the active ingredients available from the formulation is between about 4 and about 18 hours, as determined by the U.S.P. XXIII paddle method at a paddle speed of 75 rpm, using simulated intestinal fluid without the digestive enzymes normally found in intestinal fluid, at pH 6.8, and a temperature of 37° C. A process for the preparation of such a formulation is also provided.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: May 10, 2005
    Assignee: Bio Dar Ltd.
    Inventors: Yoav Blatt, Oded Arad, Eugene Kimelman, David Cohen, Rika Pinto, Avner Rotman
  • Patent number: 6875862
    Abstract: A process for producing a self-cross-linking alkyl cellulose derivative, which includes irradiating, with radioactive rays, a mixture of a starting alkyl cellulose derivative (the number of carbon atoms of the alkyl group is 1 through 3, the alkyl group may be substituted by a hydroxyl group or a carboxyl group, and the carboxyl group may form a salt) (100 parts by weight) and water (5-2,000 parts by weight), and thus obtained self-cross-linking alkyl cellulose derivative has an improved biodegradability and excellent water-absorbability.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: April 5, 2005
    Assignees: Daicel Chemical Industries, Ltd., Japan Atomic Energy Research Institute
    Inventors: Fumio Yoshii, Tamikazu Kume, Tadashi Murakami
  • Patent number: 6875441
    Abstract: A hematopoietic growth factor delivery composition includes a hematopoietic growth factor, a liquid vehicle, a first biocompatible polymer and a second biocompatible polymer. The composition exhibits reverse-thermal viscosity behavior, due to interaction between the first biocompatible polymer and the liquid vehicle. The second biocompatible polymer helps to protect the first biocompatible polymer from being dissolved in vivo following administration to a host.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: April 5, 2005
    Assignee: RxKinetix, Inc.
    Inventors: Gary J. Rosenthal, Jeffrey B. Etter
  • Patent number: 6875443
    Abstract: The present invention is directed to the encapsulation of long chain alcohols, C20-C36, in various materials including polymers and waxes. Through the proper selection of the polymer the encapsulated long chain alcohol can be advantageously added to foods such as margarines, salad dressings and the like.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: April 5, 2005
    Assignee: McNeil-PPC, Inc.
    Inventors: Clemence K. Dartey, Thomas E. Sox
  • Patent number: 6858231
    Abstract: A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: February 22, 2005
    Assignee: J. Rettenmaier & Soehne GmbH + Co. KG
    Inventors: Bob E. Sherwood, John H. Staniforth, Edward A. Hunter
  • Patent number: 6858725
    Abstract: Granulation of microcrystalline cellulose with a granulating fluid consisting of water and a water-miscible, volatile, polar organic solvent yields porous granules which are comprised of particles that are larger than the ungranulated microcrystalline cellulose. This granulated microcrystalline cellulose is capable of cushioning controlled release particles and barrier coated particles from the compression forces used in tableting, thereby maintaining the physical integrity of the components of the tablet.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: February 22, 2005
    Assignee: R.P. Scherer Technologies, Inc.
    Inventors: Ronald S. Vladyka, Jr., David F. Erkoboni, Christopher A. Sweriduk
  • Patent number: 6855333
    Abstract: Pharmaceutical formulations and dosage forms are provided having improved stability to moisture-induced degradation when compared with conventional dosage forms, especially tablets. The invention features low compression forms of thyroid drugs together with excipients, preferably in encapsulated forms. In other embodiments, relatively non-volatile oils can be admixed with the drug and/or the excipients to stabilize the formulation toward moisture-induced degradation. Hydrophobic powders are also optionally added to the formulations.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: February 15, 2005
    Assignee: Mutual Pharmaceutical Co., Inc.
    Inventor: Spiridon Spireas
  • Patent number: 6849269
    Abstract: This invention relates to proliposomal drug-delivery systems for medicaments. In particular, it relates to enteric-coated proliposomal formulations for poorly water soluble drugs and methods for making the same. The drug delivery system comprises a pharmaceutical agent, a phospholipid and a coating material. The present invention provides enhanced stability and bioavailability for pharmaceutical formulations.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: February 1, 2005
    Assignee: Western University of Health Sciences
    Inventor: Guru V. Betageri
  • Patent number: 6849275
    Abstract: A method for controlling the formation of a hydroxyapatite bone filler from dry calcium phosphate precursors in an aqueous solution uses coated sodium phosphate powder. The sodium phosphate powder is coated with a water soluble cellulose. Until the cellulose dissolves in the aqueous solution setting of the calcium phosphate cements proceeds slowly but when the exposed sodium phosphate particles start to solubilize in the aqueous solution the setting rate increases.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: February 1, 2005
    Assignee: Howmedica Osteonics Corp.
    Inventor: Paul Higham
  • Patent number: 6808557
    Abstract: A regenerated cellulose-encapsulated active substance and a method for encapsulating an active substance in a regenerated cellulose matrix are disclosed. The distribution of the active substance is preferably substantially homogeneous within the matrix of regenerated cellulose. The regenerated cellulose (i) has about the same molecular weight as the original cellulose from which it is prepared (ii) is substantially free of added substituent groups relative to the starting cellulose and is also substantially free of entrapped ionic liquid degradation products.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: October 26, 2004
    Assignees: The University of Alabama, PG Research Foundation
    Inventors: John David Holbrey, Scott K. Spear, Megan B. Turner, Richard Patrick Swatloski, Robin Don Rogers
  • Publication number: 20040208938
    Abstract: Injectable compositions having improved injectability. The injectable compositions include microparticles suspended in an aqueous injection vehicle having a viscosity of at least 20 cp at 20° C. The increased viscosity of the injection vehicle that constitutes the fluid phase of the suspension significantly reduces in vivo injectability failures. The injectable compositions can be made by mixing dry microparticles with an aqueous injection vehicle to form a suspension, and then mixing the suspension with a viscosity enhancing agent to increase the viscosity of the fluid phase of the suspension to the desired level for improved injectability.
    Type: Application
    Filed: October 9, 2003
    Publication date: October 21, 2004
    Applicant: Alkermes Controlled Therapeutics, Inc.
    Inventors: J. Michael Ramstack, M. Gary I. Riley, Stephen E. Zale, Joyce M. Hotz, Olufunmi L. Johnson
  • Patent number: 6797835
    Abstract: A phospholipidic composition with an L-&agr;-glycerophosphatidyl-choline concentration of at least 10% by weight is described, where said composition is granular and also contains, in addition to L-&agr;-glycerophosphatidylcholine, at least one granulation aid selected from the group consisting of a monophosphate, diphosphate or triphosphate of an alkali metal or an alkaline earth metal or a mixture thereof.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: September 28, 2004
    Assignee: American Lecithin Company
    Inventors: Peter Fussbroich, Johannes Gareiss
  • Patent number: 6797260
    Abstract: A composition is disclosed which has been shown to stop or control bleeding and seal open small blood vessels while accelerating the healing process of abraded oral “gum” and other “skin” (epithelial) tissues. The composition is preferably in the form of a paste which promotes ease of application and use of the composition. A variety of instruments can be used in application and cleanup of the composition showing versatile unparalleled friendly usage. The composition preferably comprises aluminum chloride, ferric sulfate (subsulfate), regenerated oxidized cellulose, aluminum ammonium sulfate, absorbable gelatin and a solvent. The composition has many dental and medical procedure applications.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: September 28, 2004
    Inventor: Terence Prevendar
  • Patent number: 6794367
    Abstract: The invention provides solid preparations for oral administration of gene-related drugs comprising a core containing the gene-related drug with a coating which does not disintegrated in small intestines, wherein said preparations can be easily tabletted, remain stable during the preparation process and said drug can be efficiently absorbed in digestive tracts.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: September 21, 2004
    Assignee: Hisamitsu Pharmaceutical, Inc.
    Inventors: Norifumi Tanida, Takeshi Goto, Jun Aoki
  • Publication number: 20040170695
    Abstract: Solid modified release dosage forms, prepared from melt granulated compositions comprising (A) one or more hydrophilic cellulose ether polymers, (B) a hydrophilic melt binder, and (C) a therapeutically active ingredient.
    Type: Application
    Filed: November 6, 2003
    Publication date: September 2, 2004
    Inventors: Michiel Onne Elama, Per Holm
  • Patent number: 6780433
    Abstract: The invention provides a pharmaceutically elegant solid oral formulation of olanzapine and a process for making such formulation.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: August 24, 2004
    Assignee: Eli Lilly and Company
    Inventors: George Randall Cochran, Tommy Clifford Morris
  • Patent number: 6780435
    Abstract: A pharmaceutical composition of omeprazole for oral administration is described which consists essentially of: (a) a pellet comprising an inert core component, a therapeutically effective amount of omeprazole, a surface active agent, a filler, a pharmaceutically acceptable alkaline agent and a binder; and (b) a single layer of coating on said pellet which comprises a layer of an enteric coating agent.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: August 24, 2004
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph C. H. Chou, Timothy Weng
  • Patent number: 6780436
    Abstract: The pharmaceutical formulation consists of a number of pellets that comprise an inert nucleus, a layer with the active ingredient, one or more intermediate layers that comprise at least a system of modified release, and an external layer of enteric coating. These pellets can be obtained applying the different layers by means of fluid bed coating techniques using aqueous solutions or suspensions of the components of such layers. The pharmaceutical formulations can be hard gelatin capsules or tablets and are suitable for use in the prevention and treatment of disorders related to abnormal gastric acid secretion.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: August 24, 2004
    Assignee: Laboratorios Del Dr. Esteve, SA
    Inventors: Antonio López-Cabrera, Pedro Juan Solanas-Ibarra, Vincent Mancinelli
  • Patent number: 6770305
    Abstract: A gel rehydration electrolyte composition provides a convenient and effective way of replenishing lost fluid and electrolytes. The gel rehydration electrolyte composition masks unpleasant tastes of electrolyte and is readily consumed by young children and elderly who cannot tolerate the liquid or frozen forms of electrolytes.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: August 3, 2004
    Assignee: PTS Labs LLC
    Inventors: Robert Nelson, Mark Glowacki
  • Patent number: 6761910
    Abstract: A pharmaceutical composition for the treatment of acute disorders is described. The composition comprises an essentially water-free, ordered mixture of at least one pharmaceutically active agent in the form of microparticles which are adhered to the surfaces of carrier particles which are substantially larger than the particles of the active agent or agents, and are essentially water-soluble, in combination with the bioadhesion and/or mucoadhesion promoting agent. The invention also relates to a method for preparing the composition and to the use of the composition for the treatment of acute disorders.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: July 13, 2004
    Assignee: Diabact AB
    Inventors: Anders Pettersson, Christer Nystrom
  • Patent number: 6759058
    Abstract: This invention relates to enteric-coated proliposomal formulations for oral medicaments. In particular, it relates to an enteric-coated proliposomal oral drug delivery system for poorly water soluble drugs and methods for making the same. The drug delivery system comprises a pharmaceutical agent, a phospholipid and an enteric coating material. The present invention provides enhanced stability and bioavailability for orally administered drugs.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 6, 2004
    Assignee: Western Center for Drug Development College of Pharmacy Western University of Health Sciences
    Inventor: Guru V. Betageri
  • Patent number: 6759059
    Abstract: A pharmaceutical composition for the treatment of acute pain by sublingual administration is described. The composition comprises an essentially water-free, ordered mixture of fentanyl or a pharmaceutically acceptable salt thereof in the form of microparticles which are adhered to the surface of carrier particles which are substantially larger than the particles of fentanyl, and are essentially water-soluble. In a preferred embodiment, the composition also contains a bioadhesion and/or mucoadhesion promoting agent. The invention also relates to the preparation of the composition, and to the use of the composition for the treatment of acute pain.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: July 6, 2004
    Assignee: Diabact AB
    Inventors: Anders Pettersson, Christer Nystrom, Hans Lennernas, Bo Lennernas, Thomas Hedner
  • Patent number: 6749867
    Abstract: The present invention provides a time-release dosage form for delivering an acid-labile pharmaceutical, such as omeprazole, into the upper portion of the gastrointestinal tract downstream of the stomach. The dosage form includes a drug-containing core surrounded by an inert time-release coating that delays release of the drug from the core until expiration of a certain time period after administration, generally 0.5-5.0 hours or 1-3 hours. When the gastrointestinal fluid contacts the core, the drug is released rapidly into the GI tract. The dosage form does not contain an enteric coating. The dosage form can also include one or more additional coatings exterior to the time-release coating to provide delivery of an immediately released loading dose of the acid-labile drug or another drug.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: June 15, 2004
    Inventors: Joseph R. Robinson, James W. McGinity
  • Patent number: 6750249
    Abstract: The present invention relates to an oral preparation of esculetin with controlled release. The oral preparation of esculetin with controlled release of the present invention comprises a gel-forming polymer base, preferably hydroxypropylmethylcellulose. The preparation may be coated with an enteric polymer base such as hydroxypropylmethylcellulose acetate succinate to thereby enhance solubility in the intestines. When orally administered, the preparation can continuously release esculetin. Thus, the administration frequency and dose can be reduced and a therapeutic effect on arthropathy can be established.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: June 15, 2004
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Iwao Yamaguchi, Saichi Ono, Tadahiko Chiba
  • Patent number: 6743775
    Abstract: A slow release formulation includes a biocompatible anionic polysaccharide material containing glucuronic acid in the polymer chain.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: June 1, 2004
    Assignee: Alpenstock Holdings Limited
    Inventors: Ivan Santar, Frantisek Kiss, Jiri Briestensky
  • Patent number: 6740341
    Abstract: The present invention relates to a core containing a drug encased in a spacing layer and a taste masking layer which provides effective taste masking for in-mouth disintegrable dosage forms containing highly objectionable tasting drugs, as well as dosage forms containing these cores.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: May 25, 2004
    Assignee: Cima Labs Inc.
    Inventors: Kris E. Holt, Rajendra K. Khankari, John Hontz
  • Patent number: 6737082
    Abstract: It comprises a compound having antifungal activity as active principle, an inert core and a coating including said active principle, and is characterized in that said inert core has a particle size comprised between 50 and 600 &mgr;m, and in that said coating comprises a single layer obtained by spraying, on said inert core, a solution comprising a compound having antifungal activity, a hydrophilic polymer and a non-ionic surfactant. The method consists in carrying out a coating, comprising a single layer, of the inert cores having a size between 50 and 600 &mgr;m, by means of the spraying of a solution composed by the antifungal agent, the hydrophilic polymer and the non-ionic surfactant, at a constant coating speed throughout the whole process; and a single drying step of said coating in the same apparatus.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: May 18, 2004
    Assignee: Liconsa Liberacion Controlada de Sustancias Activas, S.A.
    Inventor: Carlos Picornell Darder
  • Patent number: 6733778
    Abstract: A stable pharmaceutical pellet formulation that employs a core containing omeprazole or a pharmaceutically acceptable salt of omeprazole and lysine or arginine. The pellet core is directly enteric coated without a separating layer being applied between the core and the enteric coating.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: May 11, 2004
    Assignee: Andrx Pharmaceuticals, Inc.
    Inventors: Chih-Ming Chen, Joseph Chou, Unchalee Kositprapa
  • Patent number: RE38629
    Abstract: The present invention relates to a solid oral dosage form comprising a combination of metformin and glibenclamide in which the size of glibenclamide is such that the glibenclamide bioavailability is comparable to the glibenclamide bioavailability obtained with a separate administration of metformin and glibenclamide.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: October 19, 2004
    Assignee: Merck Sante
    Inventors: Yves Bonhomme, Geoffrey Nicholson, Gillian Cave, Sarah J. Nicholson