Patents by Inventor Trygve Riis

Trygve Riis 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 using a supported catalyst for hydrocarbon synthesis
    Patent number: 5116879
    Abstract: A process for converting synthesis gas, a mixture of hydrogen and carbon monoxide, into a mixture of predominately paraffinic hydrocarbons using a catalyst which includes catalytically active amounts of cobalt and a loading-insensitive second metal selected from the group consisting of platinum, iridium, rhodium and mixtures thereof, composited on an alumnia support. The finished catalyst exhibits a positive x-ray diffraction pattern. A metal oxide promoter may also be added.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: May 26, 1992
    Assignee: Den norske stats oljeselskap A.S.
    Inventors: Sigrid Eri, James G. Goodwin, Jr., George Marcelin, Trygve Riis
  • Supported catalyst for hydrocarbon synthesis
    Patent number: 5102851
    Abstract: A catalyst for converting synthesis gas, a mixture of hydrogen and carbon monoxide, into a mixture of predominately paraffinic hydrocarbons. The catalyst includes catalytically active amounts of cobalt and a loading-insensitive second metal selected from the group consisting of platinum, iridium, rhodium and mixtures thereof, composited on an aluminia support. The finished catalyst exhibits a positive x-ray diffraction pattern. A metal oxide promoter may also be added.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: April 7, 1992
    Assignee: Den norske stats oljeselskap a.s.
    Inventors: Sigrid Eri, James G. Goodwin, Jr., George Marcelin, Trygve Riis
  • Catalyst for production of hydrocarbons
    Patent number: 4880763
    Abstract: A catalyst for converting synthesis gas composed of hydrogen and carbon monoxide to hydrocarbons. The catalyst includes cobalt in catalytically active amounts up to about 60 wt % of the catalyst, rhenium in amounts of about 0.5 to 50 wt % of the cobalt content of the catalyst and an alkali in amounts ranging from about 0.5 to 5 atom percent of the cobalt content of the catalyst, supported on alumina. A metal oxide promoter may be added.
    Type: Grant
    Filed: October 18, 1988
    Date of Patent: November 14, 1989
    Assignee: Den norske stats olijeselskap a.s.
    Inventors: Sigrid Eri, James G. Goodwin, Jr., George Marcelin, Trygve Riis
  • Catalyst for production of hydrocarbons
    Patent number: 4801573
    Abstract: A catalyst for converting synthesis gas composed of hydrogen and carbon monoxide to hydrocarbons. The catalyst includes cobalt in catalytically active amounts up to about 60 wt % of the catalyst and rhenium in catalytically active amounts of about 0.5 to 50 wt % of the cobalt content of the catalyst supported on alumina. A metal oxide promoter may be added.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: January 31, 1989
    Assignee: 501 Den Norske Stats Oljeslenskap A.S.
    Inventors: Sigrid Eri, James G. Goodwin, Jr., George Marcelin, Trygve Riis