Patents by Inventor Fritz-Peter Pleschhutschnigg

Fritz-Peter Pleschhutschnigg 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).

  • Casting powder
    Patent number: 4124515
    Abstract: A casting powder for steel having, for example, ground blast furnace slag, and/or sand and caustic lime CaF.sub.2 as basic substances with further additives which include up to 10% of additives decomposing completely at temperatures below 600.degree. C under development of gas whereby the mole-volume of developed gas per mole-weight gas-generating additive (m.sup.3 /Kg) is not smaller than 0.5. Ammonium nitrite or ammonium carbonate is preferred whereby the gaseous decomposition products will be nitrogen, water vapor and/or carbon dioxide.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: November 7, 1978
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Hans Gruner, Hans Schrewe, Erich Keuper, Fritz-Peter Pleschhutschnigg