Patents by Inventor Joseph E. Doninger

Joseph E. Doninger 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).

  • Olivine bedding material for soaking pits
    Patent number: 4379691
    Abstract: A method of operating "wet bottom" practice soaking pits to prolong useful period between bed replacement. Olivine is used to replace coke breeze in the bottom of the soaking pit to protect its refractory lining.Operating periods from 40-60 days are possible when olivine is used in the soaking pit. The olivine has excellent temperature stability, also, so it is well suited for this application, in which temperatures range from about 2400.degree.-2650.degree. F.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: April 12, 1983
    Assignee: International Minerals & Chemical Corp.
    Inventors: Joseph E. Doninger, George D. Hanson