Patents by Inventor Max Ranner

Max Ranner 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).

  • Process and apparatus for calcining limestone
    Patent number: 4534731
    Abstract: In a parallel flow regenerative shaft furnace having at least two furnace shafts and a transfer duct interconnecting the furnace shafts, limestone and similar mineral raw materials are calcined by operating the furnace shafts alternately, one as a calcining or parallel flow shaft and the other as a counterflow shaft, with burnt lime being discharged uncooled at the lower end of a calcining zone of the particular calcining shaft.
    Type: Grant
    Filed: July 12, 1983
    Date of Patent: August 13, 1985
    Assignee: Maerz Ofenbau AG
    Inventors: Erwin Fussl, Max Ranner