Patents by Inventor Werner Hirt

Werner Hirt 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).

  • Test system for determining the activity of natural killer cells
    Patent number: 5902733
    Abstract: The invention concerns a method for determining the action of effectors on target cells, wherein thawed cryopreserved mammalian cells are used without prior culture as target cells which have a vitality of at least 85% after storage at -70.degree. C. for a period of 4 weeks and are obtainable by preparing a suspension of the target cells in a medium, adding a cryopreservative up to a final concentration of 2-10% (v/v) and freezing the cells with a temperature decrease of no more than 2.degree. C. per minute.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: May 11, 1999
    Assignee: Orpegen Pharma GmbH
    Inventors: Werner Hirt, Volker Ehemann, Alexander Wink