Patents by Inventor Hakan Pertoft

Hakan Pertoft 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).

  • Step-wise process to recover or eliminate biological substances by flotation from underlayered colloidal medium
    Publication number: 20040038356
    Abstract: The present invention relates to a method and kit for discontinuous density gradient centrifugation to separate a minimum of two substances in a sample. In the method and kit use is made of colloidal density media and low density solutions, such as buffer solutions. The sample is mixed with colloidal media and placed at the bottom of a centrifuge tube and desired substances flotate to the lower density media following centrifugation.
    Type: Application
    Filed: May 9, 2003
    Publication date: February 26, 2004
    Inventors: Hakan Pertoft, Borje Norling