Patents by Inventor Dwayne Thomas Friesen

Dwayne Thomas Friesen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8828438
    Abstract: A solid amorphous dispersion comprises a cholesteryl ester transfer protein (CETP) inhibitor, an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA reductase inhibitor), and a concentration enhancing polymer. At least a major portion of the CETP inhibitor in the dispersion is amorphous. The solid amorphous dispersion provides concentration-enhancement of the CETP inhibitor when administered to an aqueous use environment.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: September 9, 2014
    Assignee: Bend Research, Inc.
    Inventors: Dwayne Thomas Friesen, Bruno Caspar Hancock, Rodney James Ketner, David Keith Lyon, James Alan Shriver Nightingale, Ravi Mysore Shanker
  • Patent number: 8617604
    Abstract: Pharmaceutical compositions of a low-solubility drug and lower alkanoate-, phthalate- and trimellitate esters of hydroxypropyl methyl cellulose and lower alkanoate- and succinate esters of cellulose and methyl cellulose are disclosed that provide enhanced concentrations of the drug in a use environment.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: December 31, 2013
    Assignee: Bend Research, Inc.
    Inventors: Walter Christian Babcock, Dwayne Thomas Friesen, David Kenneth Lyon, Warren Kenyon Miller, Daniel Tod Smithey
  • Patent number: 8236349
    Abstract: A pharmaceutical composition comprises multiparticulates comprising a drug, a matrix material, and swelling agent. In one aspect, the multiparticulates comprise a core comprising a drug, and a coating surrounding the core. The coating is selected from the group consisting of (i) a water-permeable, substantially drug-impermeable coating, and (ii) an anti-enteric coating.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: August 7, 2012
    Assignee: Bend Research Inc.
    Inventors: Leah Elizabeth Appel, Dwayne Thomas Friesen, Edward Dennis LaChapelle, Sanjay Konagurthu, Richard Frank Falk, Joseph P. Reo
  • Publication number: 20110027372
    Abstract: Multiparticulates of low-solubility drugs and carriers that result in rapid release of the drug are disclosed.
    Type: Application
    Filed: October 11, 2010
    Publication date: February 3, 2011
    Inventors: Leah Elizabeth Appel, Dwayne Thomas Friesen, David Keith Lyon, Scott Baldwin McCray, Joshua Richard Shockey
  • Publication number: 20110002989
    Abstract: The present invention provides methods, dosage forms and kits for treating with an effective amount of ziprasidone a CNS disorder in a human when the human is in a fasted state. In one embodiment, the invention relates to a method for treating a CNS disorder in a human, which method comprises administering to the human in a fasted state, a solid oral dosage form comprising an amount of ziprasidone effective to treat said CNS disorder, wherein the area under the serum concentration versus time curve (AUC0-inf) of the ziprasidone in the human subsequent to said administering is from 70% to 140% of the mean area under the ziprasidone serum concentration versus time curve (AUC0-inf) resulting from administration of a control ziprasidone immediate release oral capsule containing the same amount of ziprasidone to a cohort of humans in a fed state.
    Type: Application
    Filed: March 4, 2009
    Publication date: January 6, 2011
    Inventors: William John Curatolo, Scott Max Herbig, Avinash Govind Thombre, Jaymin Chandrakant Shah, Sheri L. Shamblin, Timothy Lukas, William Brett Caldwell, Dwayne Thomas Friesen, David Keith Lyon, Christopher Donovan Craig
  • Publication number: 20100233272
    Abstract: A pharmaceutical dosage form comprising celecoxib and a pharmaceutically acceptable carrier, the dosage form when initially administered to at least 12 human patients in the fasted state in a crossover study providing: (a) a mean blood plasma concentration of celecoxib within 0.5 hour after administration (C0.5) of at least about 0.9 ng/ml per mg of celecoxib dosed; (b) a mean blood plasma concentration of celecoxib 12 hours after administration (Ci2) of at least about 0.6 ng/ml per mg of celecoxib dosed; (c) a mean area under the blood plasma concentration versus time curve for the 12 hour period following administration (AUC12) of at least 19 ng-hr/mL per mg of celecoxib dosed; and (d) a mean maximum blood plasma concentration (Cmax) of celecoxib of less than about 4.9 ng/ml per mg of celecoxib dosed.
    Type: Application
    Filed: November 6, 2008
    Publication date: September 16, 2010
    Inventors: Leah Elizabeth Appel, Dwayne Thomas Friesen, Scott M. Herbig, Rodney James Ketner, Sheri L. Shamblin
  • Patent number: 7736672
    Abstract: A process is described for producing drug-containing multiparticulates with improved stability, characterized by an improvement in one or more of chemical stability, physical stability, or dissolution stability.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: June 15, 2010
    Assignee: Pfizer, Inc.
    Inventors: Roderick J. Ray, Leah E. Appel, Dwayne Thomas Friesen, Marshall D. Crew, Joshua R. Shockey
  • Publication number: 20100119612
    Abstract: A pharmaceutical composition comprises nanoparticles comprising a core of non-crystalline drug and surface stabilizers consisting of a phospholipid and a bile salt.
    Type: Application
    Filed: April 7, 2008
    Publication date: May 13, 2010
    Inventors: Dwayne Thomas Friesen, Daniel Tod Smithey, Michael Mark Morgen, Ralph Tadday
  • Publication number: 20100089186
    Abstract: A membrane-permeation test for evaluating pharmaceutical compositions is described. The method comprises the following steps: (1) providing a microporous membrane having a plurality of pores, the membrane having a feed side and a permeate side, wherein the feed side of the membrane is in fluid communication with the feed solution, and wherein the permeate side of the membrane is in fluid communication with a permeate solution; (2) administering a pharmaceutical composition to an aqueous solution to form a feed solution; and (3) measuring the concentration of drug in the permeate solution; wherein the feed side of the membrane is hydrophilic, and/or wherein the permeate solution comprises an organic fluid.
    Type: Application
    Filed: November 2, 2009
    Publication date: April 15, 2010
    Inventors: Walter Christian Babcock, Dwayne Thomas Friesen, Scott Baldwin McCray
  • Publication number: 20100068276
    Abstract: A pharmaceutical composition comprises multiparticulates comprising a melt-congeal core and a solid amorphous dispersion layer of a poorly water soluble drug and polymer. The multiparticulates are suitable for improving bioavailability of poorly water soluble drugs. The melt-congeal cores facilitate application of the solid amorphous dispersion layer, and allow incorporation of additional optional components to the core so as to adjust the release of drug from the multiparticulate.
    Type: Application
    Filed: November 19, 2007
    Publication date: March 18, 2010
    Inventors: Dwayne Thomas Friesen, Leah E. Appel, Joshua Richard Shockey, Sanjay Konagurhu, Edward Dennis LaChapelle
  • Publication number: 20100062073
    Abstract: A pharmaceutical composition comprises nanoparticles comprising a poorly water-soluble drug and an enteric polymer, and casein.
    Type: Application
    Filed: November 16, 2007
    Publication date: March 11, 2010
    Inventors: Ronald Arthur Beyerinck, Corey Jay Bloom, Marshall David Crew, Dwayne Thomas Friesen, Michael Mark Morgen, Daniel Tod Smithey
  • Publication number: 20100003331
    Abstract: A sustained release solid oral dosage form for treatment of a psychotic disorder, for example schizophrenia, in a mammal is provided, which oral dosage form comprises ziprasidone in an amount effective in treating said psychotic disorder and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: September 3, 2009
    Publication date: January 7, 2010
    Applicant: Pfizer Inc.
    Inventors: Imran Ahmed, Leah Elizabeth Appel, Walter Christian Babcock, Dwayne Thomas Friesen, Scott Herbig, David Keith Lyon, Sheri L. Shamblin, Ravi Mysore Shanker, Daniel Tod Smithey, Steven C. Sutton, Avinash Govind Thombre, Kenneth C. Waterman, Jaymin C. Shah, Parag Suresh Shah, Peter Wisniecki, Dawn Renee Wagner
  • Patent number: 7611630
    Abstract: A membrane-permeation test for evaluating pharmaceutical compositions is described. The method comprises the following steps: (1) providing a microporous membrane having a plurality of pores, the membrane having a feed side and a permeate side, wherein the feed side of the membrane is in fluid communication with the feed solution, and wherein the permeate side of the membrane is in fluid communication with a permeate solution; (2) administering a pharmaceutical composition to an aqueous solution to form a feed solution; and (3) measuring the concentration of drug in the permeate solution; wherein the feed side of the membrane is hydrophilic, and/or wherein the permeate solution comprises an organic fluid.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: November 3, 2009
    Assignee: Bend Research, Inc.
    Inventors: Walter Christian Babcock, Dwayne Thomas Friesen, Scott Baldwin McCray
  • Publication number: 20090142401
    Abstract: Multiparticulates of low-solubility drugs and carriers that result in rapid release of the drug are disclosed.
    Type: Application
    Filed: May 26, 2006
    Publication date: June 4, 2009
    Inventors: Leah Elizabeth Appel, Dwayne Thomas Friesen, David Keith Lyon, Scott Baldwin McCray, Joshua Richard Shockey
  • Publication number: 20090118328
    Abstract: A solid amorphous dispersion comprises a cholesteryl ester transfer protein (CETP) inhibitor, an inhibitor of 3-hydroxy-3-methylglutaryl-conenzyme A reductase (HMG-CoA reductase inhibitor), and a concentration enhancing polymer. At least a major portion of the CETP inhibitor in the dispersion is amorphous. The solid amorphous dispersion provides concentration-enhancement of the CETP inhibitor when administered to an aqueous use environment.
    Type: Application
    Filed: May 22, 2006
    Publication date: May 7, 2009
    Applicant: BEND RESEARCH, INC.
    Inventors: Dwayne Thomas Friesen, Bruno Caspar Hancock, Rodney James Ketner, David Keith Lyon, James Alan Shriver Nightingale, Ravi Mysore Shanker
  • Publication number: 20080274192
    Abstract: A pharmaceutical composition comprising the compound 6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole, or a pharmaceutically acceptable salt or solvate thereof, in an amorphous form.
    Type: Application
    Filed: May 8, 2006
    Publication date: November 6, 2008
    Applicant: PFIZER INC.
    Inventors: Dwayne Thomas Friesen, Douglas Alan Lorenz, Scott Wendell Smith
  • Publication number: 20080138428
    Abstract: A highly porous, fast-disintegrating binder suitable for pharmaceutical applications and methods of making the same are disclosed, the binder comprising microporous particles of an aqueous-soluble cellulosic polymer and a wicking agent. Pharmaceutical compositions and fast-disintegrating dosage forms containing the binder are also disclosed.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 12, 2008
    Inventors: Roderick Jack Ray, Dwayne Thomas Friesen, Marshall David Crew, Richard Frank Falk, Sanjay Konagurthu
  • Publication number: 20080075784
    Abstract: Improved taste masking of pharmaceutical compositions of unpleasant-tasting drugs and cyclodextrin is achieved by forming a mixture of drug and cyclodextrin wherein the drug's dissolution rate has been retarded, or the the cyclodextrin's dissolution rate has been enhanced, or by both.
    Type: Application
    Filed: July 11, 2005
    Publication date: March 27, 2008
    Inventors: Dwayne Thomas Friesen, David Keith Lyon, Rodney James Ketner, Jennifer H. Chu
  • Patent number: 6984403
    Abstract: The present invention is related to an oral dosage form comprising an effective amount of an alkalizing agent and an azithromycin multiparticulate wherein said multiparticulate comprises azithromycin, a glyceride which comprises glyceryl monobehenate, glyceryl dibehenate, glyceryl tribehenate, or a mixture thereof and a poloxamer. Typically, the oral dosage form includes any suitable oral dosing means such as a powder for oral suspension, a unit dose packet or sachet, a tablet or a capsule.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: January 10, 2006
    Assignee: Pfizer Inc.
    Inventors: Timothy A. Hagen, Julian B. Lo, Avinash G. Thombre, Scott M. Herbig, Leah Elizabeth Appel, Marshall David Crew, Dwayne Thomas Friesen, David Keith Lyon, Scott Baldwin McCray, James Blair West
  • Publication number: 20040208926
    Abstract: Compositions of matter comprising sertraline and a solubilizing agent which increases the solubility of sertraline in aqueous chloride ion-containing use environments.
    Type: Application
    Filed: May 4, 2004
    Publication date: October 21, 2004
    Applicant: Pfizer Inc
    Inventors: Dwayne Thomas Friesen, Scott Max Herbig, Ravi Mysore Shanker, James Blair West