Patents by Inventor Robin G. Cnossen

Robin G. Cnossen 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).

  • Regeneration of partial oxidation catalysts
    Patent number: 7005455
    Abstract: The present invention relates to a process for the preparation of synthesis gas (i.e., a mixture of carbon monoxide and hydrogen), typically labeled syngas. More particularly, the present invention relates to a regeneration method for a syngas catalyst. Still more particularly, the present invention relates to the regeneration of syngas catalysts using a re-dispersion technique. The re-dispersion technique involves the formation and removal of carbonyls with the active metals. The carbonyl formation and removal effectively re-disperses the catalyst metal.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: February 28, 2006
    Assignee: ConocoPhillips Company
    Inventors: Robin G. Cnossen, Lisa M. Carmichael
  • Hydrothermal pretreatment for increasing average pore size in a catalyst support
    Patent number: 6958309
    Abstract: A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor ?. The pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: October 25, 2005
    Assignee: ConocoPhillips Company
    Inventors: Daxiang Wang, Tianyan Niu, Gloria I. Straguzzi, Harold A. Wright, Robin G. Cnossen
  • Regeneration of partial oxidation catalysts
    Publication number: 20040082670
    Abstract: The present invention relates to a process for the preparation of synthesis gas (i.e., a mixture of carbon monoxide and hydrogen), typically labeled syngas. More particularly, the present invention relates to a regeneration method for a syngas catalyst. Still more particularly, the present invention relates to the regeneration of syngas catalysts using a re-dispersion technique. The re-dispersion technique involves the formation and removal of carbonyls with the active metals. The carbonyl formation and removal effectively re-disperses the catalyst metal.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 29, 2004
    Applicant: Conoco Inc.
    Inventors: Robin G. Cnossen, Lisa M. Carmichael