Patents by Inventor Michael P. Ramsay

Michael P. Ramsay 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).

  • Fast dissolving orally consumable films containing a taste masking agent
    Patent number: 7648712
    Abstract: Physiologically acceptable films, including edible films, are disclosed. The films include a water soluble film-forming polymer, such as pullulan, and a taste masked pharmaceutically active agent, such as dextromethorphan. The taste masking agent is preferably a sulfonated polymer ion exchange resin comprising polystyrene cross-linked with divinylbenzene, such as AMBERLITE. Methods for producing the films are also disclosed.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: January 19, 2010
    Assignee: McNeil-PPC, Inc.
    Inventors: William S. Bess, Neema Kulkarni, Suhas H. Ambike, Michael P. Ramsay
  • Fast dissolving orally consumable solid film containing a taste masking agent and pharmaceutically active agent at weight ratio of 1:3 to 3:1
    Patent number: 7067116
    Abstract: Physiologically acceptable films, including edible films, are disclosed. The films include a water soluble film-forming polymer, such as pullulan, and a taste masked pharmaceutically active agent, such as dextromethorphan. The taste masking agent is preferably a sulfonated polymer ion exchange resin comprising polystyrene cross-linked with divinylbenzene, such as AMBERLITE. Methods for producing the films are also disclosed.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: June 27, 2006
    Assignee: Warner-Lambert Company LLC
    Inventors: William S. Bess, Neema Kulkarni, Suhas H. Ambike, Michael P. Ramsay
  • Antitussive drugs delivered by ion exchange resins
    Patent number: 6001392
    Abstract: The present invention relates generally to a mixture of coated and non-coated sulfonic acid cation exchange resins (Amberlite IR69) cross-linked with about 8% divinyl benzene onto which dextromethorphan has been loaded. About 30% of the drug/resin complexes are coated with a mixture of ethyl cellulose or ethyl cellulose latexes with plasticizers and water dispersible polymers such as SURELEASE. The coating level is about 50% w/w drug. Coated and uncoated drug/resin complexes are loaded with drug to about 45% by weight drug/resin complex. The ratio of coated and uncoated drug/resin complexes is about 55/45. The particle sizes of the coated and uncoated drug/resin complexes is about 20 to about 300 and about 20 to about 250 microns, respectively.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: December 14, 1999
    Assignee: Warner-Lambert Company
    Inventors: Betty Wen, Michael P. Ramsay, Heinrich Scheurer, Val Dokuzovic, Vincent Lam