Patents by Inventor Nicholas Mastrantonis

Nicholas Mastrantonis 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).

  • Abrasive compacts
    Patent number: 5054246
    Abstract: An abrasive compact is provided which has a plurality of recesses which may take the form of grooves or holes formed in a major surface thereof. The recesses contain no solid material and serve as crack arrester formations.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: October 8, 1991
    Inventors: Cornelius Phaal, Nicholas Mastrantonis
  • Tool component
    Patent number: 4941892
    Abstract: A tool component comprises an abrasive compact bonded to a support which itself is bonded through an alloy to an elongate cemented carbide pin. The alloy has a liquidus below 900.degree. C. and the following composition, by weight:______________________________________ Mn 15-41% Cu 67-41% Ni 1-5% Au 10-17% ______________________________________and at least one of In, Sn, Zn and Ag, the In and Sn, when present, being in an amount not exceeding 20% by weight and the Zn and Ag, when present, being in an amount not exceeding 30% by weight.The shear strength of the bond achieved between the support and the pin exceeds 335 MPa.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: July 17, 1990
    Inventors: Klaus Tank, Noel J. Pipkin, Nicholas Mastrantonis