Patents by Inventor Franz Bartlechner

Franz Bartlechner 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: 20110041942
    Abstract: The invention relates to a method for the production of concrete pipes, particularly for wastewater lines, having a plastic inner pipe, wherein the concrete part is manufactured in a horizontal position in order to simplify the production process and reduce the costs thereof, and wherein the plastic inner pipe is maintained in a horizontal position in a trough, wherein the trough is further filled with flowable concrete to above the plastic pipe, and wherein the plastic pipe serves as an inner tray and remains in the concrete pipe after the concrete has cured, and to a concrete pipe system.
    Type: Application
    Filed: March 11, 2009
    Publication date: February 24, 2011
    Applicant: Johann Bartlechner KG
    Inventors: Johann Bartlechner, Franz Bartlechner