Patents by Inventor Maurice P. De Walt

Maurice P. De Walt 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).

  • Tool steel
    Patent number: 4036670
    Abstract: Reduced decarburization production of steel by providing a metallized, e.g., aluminized, adherent removable protective surface coating on the exterior of the steel workpiece prior to heating for hot-working and/or annealing, e.g., of the semi-finished billet, and metallized coating products thereby fabricated.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: July 19, 1977
    Assignee: Continental Copper & Steel Industries, Inc.
    Inventor: Maurice P. De Walt