Patents by Inventor Walter J. Janis

Walter J. Janis 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).

  • Waste oil decontamination process
    Patent number: 5516969
    Abstract: Heavy metals are removed from waste lubricating oil by heating in the presence of an oxidation catalyst and a free radical initiator at temperatures in the range of about 150.degree.-200.degree. C. Corrosion and oxidation inhibitors previously added to the oil are thereby oxidized to form a separable sludge which contains the bulk of heavy metal contamination. The process is of particular advantage in removing contaminating radioactive nuclides from lubricating oils used in nuclear generating facilities.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: May 14, 1996
    Assignee: Ontario Hydro
    Inventors: John P. Krasznai, Walter J. Janis