Patents by Inventor Raymond Douglas D'Hollander

Raymond Douglas D'Hollander 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).

  • System for Treating Fine Tailings
    Publication number: 20120160781
    Abstract: A method for treating fine tailings from bitumen extraction from oil sands in a tailings treatment zone and extracting the liquid from the fine tailings. The tailings treatment zone can contain a base layer, alternating layers of fine tailings and drainage media. The treatment zone can be prepared in multiple cells contained in a basin.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 28, 2012
    Applicant: PARSONS CORPORATION
    Inventor: Raymond Douglas D'Hollander