Patents by Inventor Howard R. Brownell

Howard R. Brownell 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).

  • Stable oil-in-water emulsions
    Patent number: 4997642
    Abstract: Oil-in-water emulsions containing polyvinyl alcohol, surfactant and a salt with improved freeze-thaw and elevated temperature storage stability.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: March 5, 1991
    Assignee: Sandoz Ltd.
    Inventors: Ralston Curtis, Howard R. Brownell, Steven C. Papanu