Patents by Inventor Leon Walliser

Leon Walliser 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).

  • Process for reducing the toxicity of hydrocarbons
    Patent number: 7429553
    Abstract: This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: September 30, 2008
    Assignee: Petroleum Oil and Gas Corporation of South Africa (Pty) Ltd.
    Inventors: Carl Dunlop, Stewart Hlohloza, Petrus Johannes Hoffmann, Cyril David Knottenbelt, Leon Walliser
  • Process for reducing the toxicity of hydrocarbons
    Patent number: 7326817
    Abstract: This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: February 5, 2008
    Assignee: Petroleum Oil and Gas Corporation of South Africa (Pty) Ltd.
    Inventors: Carl Dunlop, Stewart Hlohloza, Petrus Johannes Hoffmann, Cyril David Knottenbelt, Leon Walliser
  • PROCESS FOR REDUCING THE TOXICITY OF HYDROCARBONS
    Publication number: 20070213229
    Abstract: This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate.
    Type: Application
    Filed: May 15, 2007
    Publication date: September 13, 2007
    Applicant: Petroleum Oil and Gas Corporation of South Africa (Pty) Ltd.
    Inventors: Carl Dunlop, Stewart Hlohloza, Petrus Hoffmann, Cyril Knottenbelt, Leon Walliser
  • Process for reducing the toxicity of hydrocarbons
    Publication number: 20050197256
    Abstract: This invention relates to a method for reducing the toxicity of a mixture of hydrocarbons by means of fractional distillation, a distillate having a reduced toxicity and a composition including the distillate.
    Type: Application
    Filed: October 27, 2004
    Publication date: September 8, 2005
    Inventors: Carl Dunlop, Stewart Hlohloza, Petrus Hoffmann, Cyril Knottenbelt, Leon Walliser