Patents by Inventor RICHARD DANIEL LAHAIE

RICHARD DANIEL LAHAIE 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).

  • Centrifuge process for dewatering oil sands tailings
    Patent number: 9656189
    Abstract: A process for dewatering oil sands tailings is provided, comprising providing a tailings feed having a solids content in the range of about 10 wt % to about 45 wt %; adding a flocculant to the tailings feed and mixing the tailings feed and flocculant to form flocs; and centrifuging the flocculated tailings feed to produce a centrate having a solids content of less than about 3 wt % and a cake having a solids content of at least about 50 wt %.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: May 23, 2017
    Assignee: SYNCRUDE CANADA LTD.
    Inventors: Jonathan Spence, Barry Bara, Jim Lorentz, Randy Mikula, Jiwon Lee, Richard Daniel Lahaie
  • CENTRIFUGE PROCESS FOR DEWATERING OIL SANDS TAILINGS
    Publication number: 20140054231
    Abstract: A process for dewatering oil sands tailings is provided, comprising providing a tailings feed having a solids content in the range of about 10 wt % to about 45 wt %; adding a flocculant to the tailings feed and mixing the tailings feed and flocculant to form flocs; and centrifuging the flocculated tailings feed to produce a centrate having a solids content of less than about 3 wt % and a cake having a solids content of at least about 50 wt %.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Applicant: SYNCRUDE CANADA LTD. in trust for the owners of Syncrude Project
    Inventors: JONATHAN SPENCE, BARRY BARA, JIM LORENTZ, RANDY MIKULA, JIWON LEE, RICHARD DANIEL LAHAIE