Patents by Inventor Harry Leenman

Harry Leenman 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).

  • Cleaning of oil-contaminated solids
    Publication number: 20090314135
    Abstract: The present invention relates to a method for treating of oil contaminated, metal-containing solids, in particular spent catalysts. The solids are cleaned with a dense phase gas and then metal is recovered from the cleaned solids.
    Type: Application
    Filed: April 25, 2006
    Publication date: December 24, 2009
    Inventors: Joachim Karthäuser, Harry Leenman, Dennis Luthart, Anders Marcusson