Patents by Inventor Jasper G. Fokkens

Jasper G. Fokkens 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).

  • Compositions with controlled zero-order delivery rate and method of preparing these compositions
    Patent number: 5219575
    Abstract: The present invention relates to compositions having a controlled zero-order delivery rate of the active component. The composition comprises a core or a protective layer coated with a continuous matrix of constant composition containing such a mixture of active substance(s) and excipient(s) that the concentration of the active substance(s) decreases from the core or the protective layer towards the outside, and the concentration of the excipient(s) increases in the same direction, whereas the sum of two substantially remains constant over the whole distance.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: June 15, 1993
    Assignee: Duphar International Research B.V.
    Inventors: Elvira M. G. Van Bommel, Jasper G. Fokkens