Patents by Inventor Johannes Cronje

Johannes Cronje 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).

  • Patent number: 9546473
    Abstract: A plumbing connection hub for connecting household plumbing to appliances or basins is provided. The hub includes a container formed by a continuous wall and at least one open side, a tubular drain outlet leading out of the container through an operatively lower portion of the wall and the outlet being connectable to the sewage system of a house, and a drain inlet leading into the container from an open side with the tube fixed to the wall, and with the inner ends of the inlet and outlet positioned to receive a s-trap between them. The hub further includes a water connection elbow pipe locator for locating a water connection elbow pipe.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: January 17, 2017
    Assignee: Pieter Albertus Reinecke
    Inventors: Louise Cronje, Johannes Cronje, Pieter Albertus Reinecke
  • Publication number: 20110115215
    Abstract: The invention provides a plumbing connection hub for connecting household plumbing to appliances or basins. The hub includes a container formed by a continuous wall and at least one open side, a tubular drain outlet leading out of the container through an operatively lower portion of the wall and the outlet being connectable to the sewage system of a house, and a drain inlet leading into the container from an open side with the tube fixed to the wall, and with the inner ends of the inlet and outlet positioned to receive a s-trap between them. The hub further includes a water connection elbow pipe locating means for locating a water connection elbow pipe.
    Type: Application
    Filed: July 31, 2008
    Publication date: May 19, 2011
    Inventors: Louise Cronje, Johannes Cronje, Pieter Albertus Reinecke
  • Patent number: 7361623
    Abstract: The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is nitrogen and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms. At least one heteroatom may be nitrogen and at least 2 heteroatoms may not be the same.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 22, 2008
    Assignee: Sasol Technology (Pty) Ltd.
    Inventors: John Thomas Dixon, Jacobus Johannes Cronje Grove, Peter Wasserscheid, David Shane McGuinness, Fiona Millicent Hess, Hulisani Maumela, David Hedley Morgan, Annette Bollman
  • Publication number: 20020183574
    Abstract: The invention provides a hydrocarbon conversion process for converting olefins to longer chain hydrocarbons, the process using a catalyst system including a non-nickel transition metal derived catalyst and one or more ionic liquids at a reaction temperature of between 10° C. and 130° C. and a reaction pressure of up to 100 Bar. The hydrocarbon conversion process may be oligomerisation and trimerisation.
    Type: Application
    Filed: May 23, 2002
    Publication date: December 5, 2002
    Inventors: John Thomas Dixon, Jacobus Johannes Cronje Grove, Alta Ranwell
  • Patent number: D656223
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: March 20, 2012
    Inventors: Louis Cronje, Pieter Albertus Reinecke, Johannes Cronje