Patents by Inventor Per Vretblad

Per Vretblad 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).

  • Method for stabilizing a beverage containing haze causing substances
    Patent number: 6001406
    Abstract: The present invention relates to a method for the removal of polyphenols and proteins simultaneously from a beverage by contacting the beverage with an ion exchanger that is capable of adsorbing both types of substances. The characteristic feature of the ion exchanger to be used is that it is a water-insoluble porous hydrophilic matrix to which ion exchanging groups are covalently bound.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: December 14, 1999
    Assignees: Intermag GmbH, Pharmacia Biotech AB
    Inventors: Michael Katzke, Ralf Helmut Nendza, Jan Berglof, Per Vretblad