Patents by Inventor Leah E. Appel

Leah E. Appel 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: 7625507
    Abstract: Reduced levels of drug degradation in drug-containing multiparticulates are obtained by an extrusion/melt-congeal process.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: December 1, 2009
    Assignee: Pfizer Inc.
    Inventors: Roderick J. Ray, Leah E. Appel, David D. Newbold, Dwayne T. Friesen, Scott B. McCray, David K. Lyon, James B. West, Marshall D. Crew, Joshua R. Shockey
  • Patent number: 7550158
    Abstract: Controlled release dosage forms for low solubility drugs are disclosed wherein an amorphous solid dispersion of the drug is coated with a non-dissolving and non-eroding coating that controls the influx of water to the core so as to cause extrusion of a portion of the core, as well as a method of treating a disease or disorder comprising administering such dosage form to a person.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: June 23, 2009
    Assignee: Bend Research, Inc.
    Inventors: Leah E. Appel, William J. Curatolo, Scott M. Herbig, James A. S. Nightingale, Avinash G. Thombre
  • Publication number: 20090142404
    Abstract: A dosage form comprises a low-solubility drug, and a precipitation-inhibiting polymer. The drug is in a solubility-improved form and in the form of particles at least partially coated with the precipitation-inhibiting polymer. Exemplified low-solubility drugs are ziprasidone and sildenafil. Exemplified precipitation-inhibiting polymer is HPMCAS.
    Type: Application
    Filed: August 18, 2005
    Publication date: June 4, 2009
    Inventors: Leah E. Appel, Walter C. Babcock, Dwayne T. Friesen, Roderick J. Ray, Daniel T. Smithey, Sheri L. Shamblin, Ravi M. Shanker
  • Publication number: 20080317851
    Abstract: High loading immediate release dosage forms containing at least 30 wt % of a solid drug dispersion, at least 5 wt % of a disintegrant and a porosigen are disclosed that exhibit excellent strength and aqueous solubility.
    Type: Application
    Filed: October 30, 2007
    Publication date: December 25, 2008
    Inventors: Leah E. Appel, John E. Byers, Marshall D. Crew, Dwayne T. Friesen, Bruno C. Hancock, Stephen J. Schadtle
  • Publication number: 20080299188
    Abstract: A controlled release dosage form comprises an immediate release portion and an enteric coated sustained release core.
    Type: Application
    Filed: May 14, 2007
    Publication date: December 4, 2008
    Inventors: Leah E. Appel, Dwayne T. Friesen, Scott M. Herbig, Avinash G. Thombre
  • Publication number: 20080199527
    Abstract: A pharmaceutical composition is disclosed which comprises multiparticulates wherein said multiparticulates further comprise an azithromycin core and an enteric coating disposed upon said azithromycin core.
    Type: Application
    Filed: December 9, 2005
    Publication date: August 21, 2008
    Applicant: Pfizer Inc.
    Inventors: William J. Curatolo, Scott M. Herbig, Steven R. LeMott, Julian B. Lo, Leah E. Appel, Dwayne T. Friesen, David K. Lyon, Scott B. McCray, James B. West
  • Publication number: 20040175428
    Abstract: Controlled release dosage forms for low solubility drugs are disclosed wherein an amorphous solid dispersion of the drug is coated with a non-dissolving and non-eroding coating that controls the influx of water to the core so as to cause extrusion of a portion of the core, as well as a method of treating a disease or disorder comprising administering such dosage form to a person.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 9, 2004
    Applicant: Pfizer Inc.
    Inventors: Leah E. Appel, William J. Curatolo, Scott M. Herbig, James A.S. Nightingale, Avinash G. Thombre
  • Publication number: 20040052845
    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 coating around the core is water-permeable, water-insoluble and has at least one delivery port therethrough. A variety of geometric arrangements are disclosed.
    Type: Application
    Filed: August 7, 2003
    Publication date: March 18, 2004
    Inventors: Leah E Appel, Walter C Babcock, Ronald A Beyerinck, Mark B Chidlaw, William J Curatolo, Dwayne T Friesen, Scott M Herbig, Avinash G Thombre
  • Patent number: 6706283
    Abstract: Controlled release dosage forms for low solubility drugs are disclosed wherein an amorphous solid dispersion of the drug is coated with a non-dissolving and non-eroding coating that controls the influx of water to the core so as to cause extrusion of a portion of the core, as well as a method of treating a disease or disorder comprising administering such dosage form to a person.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: March 16, 2004
    Assignee: Pfizer Inc
    Inventors: Leah E. Appel, William J. Curatolo, Scott M. Herbig, James A. S. Nightingale, Avinash G. Thombre
  • Publication number: 20030224043
    Abstract: High loading immediate release dosage forms containing at least 30 wt % of a solid drug dispersion, at least 5 wt % of a disintegrant and a porosigen are disclosed that exhibit excellent strength and aqueous solubility.
    Type: Application
    Filed: January 31, 2003
    Publication date: December 4, 2003
    Applicant: Pfizer Inc.
    Inventors: Leah E. Appel, John E. Byers, Marshall D. Crew, Dwayne T. Friesen, Bruno C. Hancock, Stephen J. Schadtle
  • Publication number: 20030198674
    Abstract: The present invention relates to controlled release pharmaceutical dosage forms of a cholesteryl ester transfer protein inhibitor, (CETPI) methods of using and methods of making same. In particular, it relates to a controlled release form of the CETPI [2R,4S] 4-[(3,5-bis-trifluoromethyl-benzyl)-methoxycarbonyl-amino]-2-ethyl-6-trifluoromethyl-3,4-dihydro-2H-quinoline-1-carboxylic acid ethyl ester.
    Type: Application
    Filed: January 23, 2003
    Publication date: October 23, 2003
    Inventors: William J. Curatolo, Steven C. Sutton, Leah E. Appel
  • Publication number: 20030086972
    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 coating around the core is water-permeable, water-insoluble and has at least one delivery port therethrough. A variety of geometric arrangements are disclosed.
    Type: Application
    Filed: August 1, 2001
    Publication date: May 8, 2003
    Inventors: Leah E. Appel, Walter C. Babcock, Ronald A. Beyerinck, Mark B. Chidlaw, William J. Curatolo, Dwayne T. Friesen, Scott M. Herbig, Avinash G. Thombre
  • Publication number: 20020015731
    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 20, 2000
    Publication date: February 7, 2002
    Inventors: Leah E. Appel, Ronald A. Beyerinck, Mark B. Chidlaw, William J. Curatolo, Dwayne T. Friesen, Kelly L. Smith, Avinash G. Thombre
  • Publication number: 20010044474
    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: Application
    Filed: December 20, 2000
    Publication date: November 22, 2001
    Inventors: William J. Curatolo, Kenneth C. Waterman, Avinash G. Thombre, Michael B. Fergione, Michael C. Roy, Leah E. Appel, Danni Supplee, Dwayne T. Friesen, Mark B. Chidlaw, Ronald A. Beyerinck
  • Patent number: 5256440
    Abstract: Process for preparing and film coating a dosage form. An intagliated dosage form core is produced by inscribing one or more areas on the surface of the dosage form core prior to coating. An aqueous dispersion of a polymeric coating is then applied to the intagliated dosage form core. When placed in an environment of use, the film coating within the circumscribed region of the dosage form surface is reproducibly expelled, leaving a coated core tablet with a predefined aperture in the coating which exposes a discrete portion of the core surface to the environment of use.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: October 26, 1993
    Assignee: Merck & Co., Inc.
    Inventors: Leah E. Appel, Gaylen M. Zentner