Patents by Inventor Felix Theeuews

Felix Theeuews 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).

  • Drug delivery system comprising a volume increasing matrix containing a plurality of tiny pills
    Patent number: 4764380
    Abstract: A delivery device is disclosed for delivering a beneficial drug to a biological environment of use. The device comprises a hydrogel reservoir containing tiny pills. The tiny pills comprise a wall surrounding a drug core.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: August 16, 1988
    Assignee: Alza Corporation
    Inventors: John Urquhart, Felix Theeuews