Patents by Inventor Sheila M. Ratnaraj

Sheila M. Ratnaraj 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).

  • Aqueous pharmaceutical suspension and process for preparation thereof
    Patent number: 5658919
    Abstract: The present invention relates to an aqueous pharmaceutical suspension composition containing suspended acetaminophen and at least one additional pharmaceutical active, a suspension system containing xanthan gum, a mixture of microcrystalline cellulose and sodium carboxymethylcellulose and an auxiliary suspending agent selected from the group consisting of hydroxyethylcellulose and a pharmaceutically acceptable salt of carboxymethylcellulose, an effective amount of a taste-masking composition; and water, as well as a process for producing such aqueous pharmaceutical suspensions.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: August 19, 1997
    Assignee: McNeil-PPC, Inc.
    Inventors: Sheila M. Ratnaraj, Warren L. Sunshine