Patents by Inventor Gottfried Bohm

Gottfried Bohm 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).

  • Procedure for bright annealing of metallic work pieces using nitrogen as protective gas
    Patent number: 4515645
    Abstract: Metallic work pieces are annealed under protective gas in bright annealing furnaces with subsequent cooling line. Exogas or nitrogen is used as protective gas. In the latter case, liquid nitrogen is evaporated and introduced at several locations in the bright annealing furnace and the cooling line.For the purpose of decreasing the installation costs, increasing the performance and improving the quality, the liquid nitrogen is sprayed without prior evaporation onto the material to be annealed, namely in the end zone of the cooling line.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: May 7, 1985
    Assignee: Messer Griesheim GmbH
    Inventor: Gottfried Bohm