Patents by Inventor Heinz Ruppert

Heinz Ruppert 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 production of structural foam, particularly cement foam
    Patent number: 5393341
    Abstract: A method for the production of structural foam from air, water, foaming agent and an aggregate, particularly cement foam, for which cement slurry is blown under high pressure into a mixing chamber and mixed with a foaming agent and the mixture immediately thereafter is conveyed to an expansion nozzle, into which metered amounts of compressed air are blown.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: February 28, 1995
    Assignee: RUME Maschinenbau GmbH
    Inventors: Dieter Meier, Heinz Ruppert