Patents by Inventor Roger K. Forseen

Roger K. Forseen 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).

  • Articles providing sustained release and method of making
    Patent number: 4011061
    Abstract: Articles for providing sustained release of water-soluble components. The articles comprise agglomerate particles comprising an organophobic water-soluble nucleus particle surrounded by smaller, clinging organophilic particles. The agglomerate particles are bound into a coherent mass, such as a tablet, by an organic, water-insoluble binder. The release characteristics of the articles can be selectively controlled by controlling the type and relative amount of the organophilic particles employed. The articles can be made by dry-blending the solid ingredients and forming and fusing the blended mass.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: March 8, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Roger K. Forseen, David A. Hofacker