Patents by Inventor Roger D. Graben

Roger D. Graben 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).

  • Bilayered oral pharmaceutical composition with pH dependent release
    Patent number: 5316772
    Abstract: An oral pharmaceutical composition comprises a core containing a drug, a first inner layer coating on the core which contains a drug, and a second inner layer coating on the first inner layer coating which also contains drug. This oral pharmaceutical composition is used especially for treating intestinal diseases.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: May 31, 1994
    Assignee: Solvay & Cie, S.A. (Societe Anonyme)
    Inventors: Raymond W. Jurgens, Jr., Roger D. Graben, Adnan S. Sabir