Patents by Inventor Dwayne Friesen

Dwayne 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).

  • Publication number: 20080064763
    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: Application
    Filed: January 23, 2006
    Publication date: March 13, 2008
    Inventors: Walter Babcock, Dwayne Friesen, David Lyon, Warren Miller, Daniel Smithey
  • Publication number: 20080063708
    Abstract: A pharmaceutical composition comprises a solid amorphous dispersion comprising a low-solubility drug and a concentration-enhancing polymer and a lipophilic microphase-forming material. Alternatively, a solid amorphous dispersion comprising a low-solubility drug and a concentration-enhancing polymer is co-administered with a lipophilic microphase-forming material to an in vivo use environment.
    Type: Application
    Filed: October 26, 2007
    Publication date: March 13, 2008
    Inventors: Michael Perlman, Ravi Shanker, Walter Babcock, Dwayne Friesen, Mark Rabenstein, Dan Smithey
  • Publication number: 20080015343
    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: Application
    Filed: July 18, 2007
    Publication date: January 17, 2008
    Inventors: Timothy Hagen, Julian Lo, Avinash Thombre, Scott Herbig, Leah Appel, Marshall Crew, Dwayne Friesen, David Lyon, Scott McCray, James West
  • Publication number: 20070282009
    Abstract: A pharmaceutical composition comprises a solid amorphous dispersion of a cholesteryl ester transfer protein inhibitor and a concentration-enhancing polymer.
    Type: Application
    Filed: April 30, 2007
    Publication date: December 6, 2007
    Inventors: Marshall Crew, William Curatolo, Dwayne Friesen, Michael Gumkowski, Douglas Lorenz, James Nightlingale, Roger Ruggeri, Ravi Shanker
  • Publication number: 20070205155
    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: March 18, 2005
    Publication date: September 6, 2007
    Inventors: Walter Babcock, Dwayne Friesen, Scott McCray
  • Publication number: 20070196483
    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: Application
    Filed: April 6, 2005
    Publication date: August 23, 2007
    Inventors: Leah Appel, Dwayne Friesen, Edward Lachapelle, Sanjay Konagurthu, Richard Falk, Joseph Reo
  • Publication number: 20070190129
    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: August 31, 2004
    Publication date: August 16, 2007
    Inventors: Imran Ahmed, Leah Appel, Walter Babcock, Dwayne Friesen, Scott Herbig, David Lyon, Sheri Shamblin, Ravi Shanker, Daniel Smithey, Steven Sutton, Avinash Thombre, Kenneth Waterman
  • Publication number: 20070163917
    Abstract: The present invention relates to a device for reducing the oxygen content of the air surrounding pharmaceutical dosage forms contained within an oxygen-permeable bottle, while also maintaining a relatively low moisture level in said air during the shelf-life of the product. Accordingly, a pharmaceutical package contains a dessicant in a first sub-container and a self-activated oxygen-absorber in a second sub-container.
    Type: Application
    Filed: July 4, 2005
    Publication date: July 19, 2007
    Inventors: Dwayne Friesen, Kenneth Waterman
  • Publication number: 20070148236
    Abstract: Pharmaceutical compositions comprise a low-solubility drug adsorbed onto a high surface area substrate to form an adsorbate. The compositions in some embodiments include a concentration-enhancing polymer.
    Type: Application
    Filed: December 4, 2006
    Publication date: June 28, 2007
    Inventors: Walter Babcock, Dwayne Friesen, Ravi Shanker, Daniel Smithey, Ralph Tadday
  • Publication number: 20070148232
    Abstract: Solid compositions with improved physical stability comprise an amorphous, low-solubility drug, a poloxamer, and a stabilizing polymer. The compositions provide good physical stability during storage and concentration enhancement of dissolved drug when administered to an aqueous environment of use.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 28, 2007
    Inventors: Marshall Crew, Dwayne Friesen, Warren Miller, Ravi Shanker, Daniel Smithey
  • Publication number: 20070141143
    Abstract: Solid compositions of low-solubility drugs and poloxamers that provide concentration enhancement when administered to an aqueous environment of use are disclosed.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 21, 2007
    Inventors: Daniel Smithey, Dwayne Friesen, Warren Miller, Walter Babcock
  • Publication number: 20070087057
    Abstract: A controlled release dosage form has a coated core with the core comprising a drug-containing composition and a water-swellable composition, each occupying separate regions within the core. The drug-containing composition comprises a low-solubility drug and a drug-entraining agent. The coating around the core is water-permeable, water-insoluble and has at least one delivery port therethrough. A variety of formulations having specific drug release profiles are disclosed.
    Type: Application
    Filed: December 14, 2006
    Publication date: April 19, 2007
    Inventors: Leah Appel, Ronald Beyerinck, Mark Chidlaw, William Curatolo, Dwayne Friesen, Kelly Smith, Avinash Thombre
  • Publication number: 20060216351
    Abstract: In one aspect, pharmaceutical compositions comprising dispersions of an acid-sensitive drug and a neutral dispersion polymer are disclosed. The acid-sensitive drug has improved chemical stability relative to dispersions of the drug and acidic polymers. In another aspect, pharmaceutical compositions of low-solubility drugs and amphiphilic, hydroxy-functional vinyl copolymers are disclosed.
    Type: Application
    Filed: May 16, 2006
    Publication date: September 28, 2006
    Inventors: Dwayne Friesen, Michael Gumkowski, Rodney Ketner, Douglas Lorenz, James Nightingale, Ravi Shanker, James West
  • Publication number: 20060211654
    Abstract: A pharmaceutical composition comprises a solid amorphous dispersion of a cholesteryl ester transfer protein inhibitor and a concentration-enhancing polymer.
    Type: Application
    Filed: June 2, 2006
    Publication date: September 21, 2006
    Inventors: William Curatolo, Dwayne Friesen, Michael Gumkowski, Douglas Lorenz, James Nightingale, Roger Ruggeri, Ravi Shanker
  • Publication number: 20060204577
    Abstract: Pharmaceutical compositions comprised of low-solubility and/or acid-sensitive drugs and neutralized acidic polymers are disclosed.
    Type: Application
    Filed: June 5, 2006
    Publication date: September 14, 2006
    Inventors: Marshall Crew, Dwayne Friesen, Rodney Ketner, Ravi Shanker, James West
  • Publication number: 20060039988
    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: Application
    Filed: October 26, 2005
    Publication date: February 23, 2006
    Inventors: Timothy Hagen, Julian Lo, Avinash Thombre, Scott Herbig, Leah Appel, Marshall Crew, Dwayne Friesen, David Lyon, Scott McCray, James West
  • Publication number: 20060029677
    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: Application
    Filed: August 25, 2005
    Publication date: February 9, 2006
    Inventors: Timothy Hagen, Julian Lo, Avinash Thombre, Scott Herbig, Leah Appel, Marshall Crew, Dwayne Friesen, David Lyon, Scott McCray, James West
  • Publication number: 20060003011
    Abstract: Pharmaceutical compositions comprised of low-solubility and/or acid-sensitive drugs and neutralized acidic polymers are disclosed.
    Type: Application
    Filed: August 26, 2005
    Publication date: January 5, 2006
    Inventors: Marshall Crew, Dwayne Friesen, Rodney Ketner, Ravi Shanker, James West
  • Publication number: 20050186285
    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: Application
    Filed: December 3, 2004
    Publication date: August 25, 2005
    Inventors: Rodrick Ray, Leah Appel, Dwayne Friesen, Marshall Crew
  • Publication number: 20050181061
    Abstract: Reduced levels of drug degradation in drug-containing multiparticulates are obtained by an extrusion/melt-congeal process.
    Type: Application
    Filed: December 3, 2004
    Publication date: August 18, 2005
    Inventors: Roderick Ray, Leah Appel, David Newbold, Dwayne Friesen, Scott McCray, David Lyon, James West, Marshall Crew