Patents by Inventor John E. Gruzleski

John E. Gruzleski 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).

  • Low porosity, fine grain sized strontium-treated magnesium alloy castings
    Patent number: 5143564
    Abstract: Cast magnesium alloy parts being substantially free of microporosity and having a fine grain size are produced by addition of strontium in an amount of 0.001 to 0.1%, by weight, to the melt of the magnesium alloy, prior to casting; the addition of strontium effects a reduction in the grain size and concentrates the shrinkage microporosity, whereby the microporosity can be shifted by conventional techniques to an appendix of the casting which is subsequently removed.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: September 1, 1992
    Assignee: McGill University
    Inventors: John E. Gruzleski, Abdulcelil Aliravci