Patents by Inventor Wolfram Schultheib

Wolfram Schultheib 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).

  • Publication number: 20020011051
    Abstract: The present invention relates to a pleated filter made of a multi-layer filter medium, including at least one filter paper layer having area weights of 30-100 g/m2, a microfiber nonwoven fabric layer having area weights 5-120 g/m2 and a support nonwoven fabric layer made of synthetic, polymeric fibers having area weights of 10-120 g/m2. The layers of the pleated filter contain fused polymer areas by which the fabric layers are bonded to the paper layer, and by which the fabric layers are made firmer within themselves. When subject to a dust removal test at an initial pressure difference of at most 180 Pa, at a boundary speed of approximately 2.62 m/s and a flow speed through the filter medium of approximately 0.13 m/s, the pleated filter is able to separate at least 90% of particles greater than 0.3 &mgr;m, at least 92% of particles greater than 0.
    Type: Application
    Filed: March 16, 2001
    Publication date: January 31, 2002
    Inventors: Wolfram Schultheib, Felix Herberg, Jorg Stockler