Patents by Inventor Mashallah Quraishi

Mashallah Quraishi 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).

  • Reusable wax tree sprue rod assembly for tree making in lost wax investment casting and method use
    Patent number: 7942189
    Abstract: The present invention is a novel sprue rod assembly for lost wax investment casting and its method of use. The sprue rod is reusable because it is made of material with a high melting point, such as metal, instead of wax. The sprue rod assembly also comprises a weight pull system, which causes the sprue rod to fall out of the investment mold when it is heated prior to dewaxing or early during dewaxing. The reusable sprue rod assembly reduces wasted wax, increases the efficiency of dewaxing and decreases flaws from the expansion of trapped wax during dewaxing. In addition, the sprue rods can be stacked to create the desired length.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: May 17, 2011
    Inventors: Mashallah Quraishi, Khalid Mansoor