Patents by Inventor John H. Starkey

John H. Starkey 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).

  • Testing method for ball mills
    Patent number: 7197952
    Abstract: The invention relates to a testing method for designing a semiautogenous or an autogenous grinding circuit with at least one ball mill for grinding ore. In the method the ore is tested in two separate testing steps using the same testing sample of ore.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: April 3, 2007
    Assignee: Outokumpu Technology Oyj
    Inventor: John H. Starkey