Patents by Inventor Ralf Helmold

Ralf Helmold 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).

  • TUBE OR MOLDED TUBE ELEMENT
    Publication number: 20120060962
    Abstract: The invention relates to a tube or molded tube element for receiving, storing or guiding air, containing at least a percentage of a chlorine-containing polymer material, and further containing at least one biocidally active component. The invention is characterized in that the polymer material is stabilized by a composition which contains at least one calcium compound.
    Type: Application
    Filed: March 29, 2010
    Publication date: March 15, 2012
    Inventors: Volker Liebel, Ralf Helmold