Patents by Inventor George R. Watson

George R. Watson 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).

  • Co-fused alumina-zirconia alloy abrasive containing magnesium oxide
    Patent number: 4126429
    Abstract: An abrasive material giving improved results when employed as the abrasive grit in grinding wheels employed for heavy duty snagging of carbon steels and stainless steels is produced by the rapid quenching of a fusion of a mixture of alumina, zirconia, and magnesia, the zirconia content being 22 to 28%, by weight, and the weight ratio of magnesia to alumina being between 0.014 and 0.029. The solidified product is impact crushed to produce coarse abrasive grits in the grit size range appropriate for heavy duty snagging.
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: November 21, 1978
    Assignee: Norton Company
    Inventor: George R. Watson