Patents by Inventor Gro Cederlof

Gro Cederlof 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).

  • Continuous process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture
    Patent number: 7351873
    Abstract: A continuous process to separate color bodies and/or asphalthenic contaminants from a hydrocarbon mixture by passing part of the hydrocarbon mixture through a membrane over which membrane a pressure difference is maintained thereby obtaining a hydrocarbon permeate having a reduced content of color bodies and/or contaminants, wherein at regular time intervals the pressure difference over the membrane is substantially lowered.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: April 1, 2008
    Assignee: Shell Oil Company
    Inventors: Gro Cederløf, Eduard Rudolf Geus
  • Continuous process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture
    Publication number: 20040249232
    Abstract: A continuous process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture by passing part of the hydrocarbon mixture through a membrane over which membrane a pressure difference is maintained thereby obtaining a hydrocarbon permeate having a reduced content of colour bodies and/or contaminants, wherein at regular time intervals the pressure difference over the membrane is substantially lowered.
    Type: Application
    Filed: April 16, 2004
    Publication date: December 9, 2004
    Inventors: Gro Cederlof, Eduard Rudolf Geus