Patents by Inventor Ralf Hofer

Ralf Hofer 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 the dry separation of unsorted garbage that contains packaging waste
    Publication number: 20030183705
    Abstract: The invention relates to a method for the dry separation of unsorted garbage that contains packaging waste consisting of plastic materials of various polymer groupings that includes the following steps: separation of the materials on the basis of differences in size; separation of the materials on the basis of differences in grain shape, grain size and/or specific weight; separation of the materials on the basis of differences in their magnetic properties; separation of the materials on the basis of differences in their electric properties; and separation of the materials on the basis of differences in their spectroscopic properties.
    Type: Application
    Filed: May 9, 2003
    Publication date: October 2, 2003
    Inventors: Joachim Christiani, Ralf Hofer