Patents by Inventor Thomas Hersperger

Thomas Hersperger 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 and device for decontaminating polycondensates
    Patent number: 6730774
    Abstract: The invention relates to a process and an apparatus for decontaminating polycondensates, such as RPET or similar polymeric materials, in particular comminuted PET bottles. The object is to simplify existing recycling processes. This is achieved by comminuting used PET products to give flakes, and cleaning these flakes. The flakes are further decontaminated immediately and continuously in a hot gas stream.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 4, 2004
    Assignee: Buehler AG
    Inventors: Andreas Christel, Camille Borer, Thomas Hersperger