Patents by Inventor Antonio Leogrande

Antonio Leogrande 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).

  • Patent number: 3982933
    Abstract: A brass alloy consisting essentially of 57 to 62% by weight copper, 1 to 4% by weight lead and the balance zinc has improved machinability in terms of allowing high coating speeds or affording reduced coating tool wear, especially when the alloy is machined upon an automatic lathe, by the inclusion therein of 0.15 to 0.20% by weight each of tin and magnesium.
    Type: Grant
    Filed: October 31, 1973
    Date of Patent: September 28, 1976
    Assignee: Vereinigte Deutsche Metallwerke AG
    Inventors: Gunther Rudolph, Erhard Schelzke, Antonio Leogrande
  • Patent number: 3976474
    Abstract: A covering layer for metallic baths, i.e. baths of molten metal or metal alloys, especially brass or brass-forming compositions consisting of premelted homogeneous finely divided alkali borosilicate glass in a particle size of less than 60 microns and a composition of substantially 10 to 70% by weight B.sub.2 O.sub.3, 5 to 65% by weight SiO.sub.2 and 5 to 40% by weight of one or more of the alkali-metal oxides Na.sub.2 O, K.sub.2 O and Li.sub.2 O.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: August 24, 1976
    Assignee: Vereinigte Deutsche Metallwerke AG
    Inventors: Wolf Wunder, Volker Kohne, Rosolde Hill, Antonio Leogrande