Patents by Inventor Don Deptowicz

Don Deptowicz 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).

  • Method of forming a cast metal article
    Patent number: 8393381
    Abstract: A cast metal article is formed with an internal cavity. The internal cavity is formed by a ceramic core which is removed from the cast metal article to leave the cavity. The ceramic core is formed with a cavity to facilitate removal of the core from the cast metal article. To remove the core from the cast metal article, the cavity in the core is filled with a leaching liquid.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: March 12, 2013
    Assignee: PCC Airfoils, Inc.
    Inventors: Lawrence D. Graham, James Barrett, Don Deptowicz
  • METHOD OF FORMING A CAST METAL ARTICLE
    Publication number: 20120291983
    Abstract: A cast metal article is formed with an internal cavity. The internal cavity is formed by a ceramic core which is removed from the cast metal article to leave the cavity. The ceramic core is formed with a cavity to facilitate removal of the core from the cast metal article. To remove the core from the cast metal article, the cavity in the core is filled with a leaching liquid.
    Type: Application
    Filed: May 18, 2011
    Publication date: November 22, 2012
    Inventors: LAWRENCE D. GRAHAM, James Barrett, Don Deptowicz