Patents by Inventor Curtis D. Carey

Curtis D. Carey 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).

  • Production of high purity iron powder
    Patent number: 4154608
    Abstract: High purity iron powder may be obtained by treating an iron bearing source which contains impurities such as silica along with minor amounts of aluminum, calcium and magnesium to a series of steps which include grinding the iron bearing source followed by subjecting the ground source to a caustic leach at an elevated temperature and pressure. Thereafter the soluble impurities may be separated from the residue, the latter then being reduced by treatment with hydrogen at an elevated temperature and pressure to convert the iron to the metallic form.
    Type: Grant
    Filed: July 19, 1978
    Date of Patent: May 15, 1979
    Assignee: UOP Inc.
    Inventors: Curtis D. Carey, Martin C. Kuhn, Margaret K. Witte