Patents by Inventor John L. Pawlik

John L. Pawlik 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).

  • Apparatus for modifying thermal gradient for casting in graphite molds
    Patent number: 5238216
    Abstract: In a casting mold, refractory filled segments are provided between adjacent riser seats to provide more uniform and more controlled cooling of the molten metal to reduce microporosity in the cast product.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: August 24, 1993
    Assignee: Amsted Industries Incorporated
    Inventor: John L. Pawlik