Patents by Inventor Kjell J. Mattson

Kjell J. Mattson 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).

  • Patent number: 4994260
    Abstract: A pharmaceutical mixture with controlled release of actice substance which includes masking of bad taste and stability increasing of active substance characterized in that an encapsulated active substance is combined with a substance controlling the release of active substance from the encapsulation and method for preparing said mixture.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: February 19, 1991
    Assignee: Astra Lakemedel Aktiebolag
    Inventors: Anders G. V. Kallstrand, Kjell J. Mattson, Rolf I. Sjoqvist