Patents by Inventor Johann-Hugo Wirtz

Johann-Hugo Wirtz 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).

  • Metallothermal reaction mixture
    Patent number: 5370726
    Abstract: A metallothermal reaction mixture consisting of a metal oxide, a metal that is more electronegative than the metal of the metal oxide and, optionally, further additives, the individual components being present in the form of small particles, is prepared in which at least 20% by weight of the metal oxide is present in the form of spherical or at least approximately spherical particles ranging in size from >0 to 3.0 mm. A stabilization and evening out of the reaction is achieved by the invention composition of the reaction mixture.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: December 6, 1994
    Assignee: Elektro-Thermit GmbH
    Inventor: Johann-Hugo Wirtz
  • Igniter for fuses and the like
    Patent number: 4038924
    Abstract: A firing cap is located in a housing and produces, when detonated, a fuse-igniting fire jet. A firing pin mechanism is provided for impacting and detonating the firing cap. An arrangement is provided which extends across the path of the fire jet and which includes passages through which the jet is compelled to pass to thereby control the behavior of the jet.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: August 2, 1977
    Assignee: Hagenuk & Co GmbH
    Inventors: Paul Beermann, Wilhelm Grosse-Benne, Hans Guntermann, Johann-Hugo Wirtz