Patents by Inventor Cardina A. M. C. Dirix

Cardina A. M. C. Dirix 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).

  • Process for the preparation of biologically active material containing polymeric microcapsules
    Patent number: 5389379
    Abstract: A process for the preparation of microcapsules containing biologically active material is disclosed. The process involves dissolving a polymer into a solvent into which the active material is also introduced; atomizing the resulting suspension or solution and collecting the droplets in a non-solvent for the polymeric droplets containing active material, resulting in coagulation. Subsequently, the coagulated droplets are hardened in a second non-solvent.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: February 14, 1995
    Assignee: Akzo N.V.
    Inventors: Cardina A. M. C. Dirix, Hendrikus J. M. Kamp, Anthonius P. Sam