Patents by Inventor William Robert Middleton

William Robert Middleton 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 and means for obtaining white cast iron
    Patent number: 4003425
    Abstract: In an iron molding process and in a mold for carrying out the process, in which the mold is at least locally coated with tellurium or bismuth to promote the production of a white iron structure there is included in the coating a water-bearing substance in which the water is loosely chemically combined tightly enough so that it withstands the heat involved in drying of the mold but is liberated on contact with the molten iron.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: January 18, 1977
    Assignee: The British Cast Iron Research Assoc.
    Inventor: William Robert Middleton