Patents by Inventor Michael Pointek

Michael Pointek 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 obtaining recombinant hbsag
    Patent number: 6428984
    Abstract: The present invention relates to a method for recovering recombinant HBsAg, wherein recombinant methylotrophic yeast cells which are capable of expressing HBsAg are disrupted using a high pressure homogenizer, and HBsAg is recovered from the cell debris obtained. The inventive method is characterized by a high product yield per g of cell dry weight and thus constitutes a considerable improvement over the former methods for recovering HBsAg.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: August 6, 2002
    Assignee: Rhein Biotech Gesellschaft fur Neue Biotechnologische Porzesse und Produkte mbH
    Inventors: Michael Pointek, Michael Weniger