Patents by Inventor Richard A. Loke

Richard A. Loke 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).

  • Improved aldehyde hydrogenation process
    Patent number: 4876402
    Abstract: An improved vapor phase catalytic hydrogenation of aldehydes to the corresponding alcohols wherein the improvement comprises employing a copper oxide-zinc oxide catalyst impregnated with a selectivity enhancer selected from the group consisting of an alkali-metal, transition metal and mixtures thereof.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: October 24, 1989
    Assignee: Union Carbide Chemicals and Plastics Company Inc.
    Inventors: John E. Logsdon, Richard A. Loke, Jay S. Merriam, Richard W. Voight
  • Aldehyde hydrogenation catalyst
    Patent number: 4762817
    Abstract: An aldehyde hydrogenation catalyst consisting essentially of a mixture of copper and zinc oxide impregnated with a minor selectivity improving amount of a selectvity enhancer comprising the combination of an alkali metal selectivity enhancer selected from the group consisting of sodium, potassium, lithium, cesium, and mixtures thereof and a transition metal selectivity enhancer selected from the group consisting of nickel, cobalt, and mixtures thereof.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventors: John E. Logsdon, Richard A. Loke, Jay S. Merriam, Richard W. Voight