Patents by Inventor Michael C. Roy

Michael C. Roy 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: 7771748
    Abstract: The present invention is directed to controlled-release (CR) oral pharmaceutical dosage forms of 5,8,14-triazatetracyclo[10.3.1.02,11.04,9]-hexadeca-2(11),3,5,7,9-pentaene, 1, and pharmaceutically acceptable salts thereof, and methods of using them to reduce nicotine addiction or aiding in the cessation or lessening of tobacco use while reducing nausea as an adverse effect. The present invention also relates to an immediate-release (IR) low dosage composition having a stable formulation with uniform drug distribution and potency.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: August 10, 2010
    Assignee: Pfizer Inc
    Inventors: Mary T. Am Ende, Michael C. Roy, Scott W. Smith, Kenneth C. Waterman, Sara Kristen Moses
  • 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
  • Publication number: 20030180360
    Abstract: The present invention is directed to controlled-release (CR) oral pharmaceutical dosage forms of 5,8,14-triazatetracyclo[10.3.1.02,11.04,9]-hexadeca-2(11),3,5,7,9-pentaene, 1, and pharmaceutically acceptable salts thereof, and methods of using them to reduce nicotine addiction or aiding in the cessation or lessening of tobacco use while reducing nausea as an adverse effect. The present invention also relates to an immediate-release (IR) low dosage composition having a stable formulation with uniform drug distribution and potency.
    Type: Application
    Filed: November 20, 2002
    Publication date: September 25, 2003
    Applicant: Pfizer Inc.
    Inventors: Mary T. Am Ende, Michael C. Roy, Scott W. Smith, Kenneth C. Waterman, Ernest S. Quan, Sara Kristen Moses
  • Publication number: 20030175346
    Abstract: An osmotic pharmaceutical tablet is described which comprises a single-layer compressed core surrounded by a water permeable layer having a passageway. The single-layer core contains (i) a non-ripening drug having a solubility per dose less than about 1 mL−1, (ii) about 2.0% to about 20% by weight of a hydroxyethylcellulose having a weight-average, molecular weight from about 300,000 to about 2,000,000, and (iii) an osmagent.
    Type: Application
    Filed: January 27, 2003
    Publication date: September 18, 2003
    Inventors: Anne Billotte, Rebecca Carrier, Michael B. Fergione, Dwayne T. Friesen, Bruce C. MacDonald, Lee A. Miller, Michael C. Roy, Sheri L. Shamblin, Kenneth C. Waterman
  • 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