Patents by Inventor Hans-Peter Irsch

Hans-Peter Irsch 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 apparatus for the application of mortar or concrete by spraying
    Patent number: 5433519
    Abstract: A method and device for the application of mortar or concrete by spraying, wherein a quick-acting binding agent mixed with an admixture is transferred to a spraying-nozzle by a pneumatic conveyor where water is added, wherein the binding agent is added mixed with the admixture during the pneumatic transfer.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: July 18, 1995
    Assignee: PFT Putz und Fordertechnik GmbH
    Inventor: Hans-Peter Irsch