Patents by Inventor David R. Bates

David R. Bates 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).

  • Methanation catalysts
    Patent number: 4762815
    Abstract: Silicon containing methanation catalysts e.g. those prepared by coprecipitation techniques, may be stabilized to prevent leaching of silicon species by a hydrothermal treatment comprising heating the reduced catalyst in a steam reducing gas atmosphere, lowering the temperature until liquid water species condense out, reheating to evaporate the condensed water and passivation in a mildly oxidizing atmosphere.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: August 9, 1988
    Assignee: British Gas plc
    Inventors: Reginald G. S. Banks, David R. Bates, Stephen D. Jones, James A. Oliver