Patents by Inventor Andries G. Altena

Andries G. Altena 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).

  • Oxidative conversion of methane to ethylene and ethane
    Patent number: 4981829
    Abstract: This invention relates to a method for the oxidative conversion of methane to ethylene and/or ethane and to a catalyst system for use in the method.In more detail a method for the oxidative conversion of methane to ethylene and/or ethane in which a mixture comprising methane and oxygen is heated to a temperature of from 500.degree. to 1000.degree. C. and the heated mixture is contacted with a catalyst system which comprises a first component which is a non-reducible metal compound and which first component is sufficiently refractory to withstand the operative temperature and a second component which is one or more oxycompounds of boron or phosphorus provided on the surface of the first component.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: January 1, 1991
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Eric Shutt, Andries G. Altena, John W. Jenkins
  • Oxidative conversion of methane to ethylene and ethane
    Patent number: 4873388
    Abstract: This invention relates to a method for the oxidative conversion of methane to ethylene and/or ethane and to a catalyst system for use in the method.In more detail a method for the oxidative conversion of methane to ethylene and/or ethane in which a mixture comprising methane and oxygen is heated to a temperature of from 500.degree. to 1000.degree. C. and the heated mixture is contacted with a catalyst system which comprises a first component which is a non-reducible metal compound and which first component is sufficiently refractory to withstand the operative temperature and a second component which is one or more oxycompounds of boron or phosphorus provided on the surface of the first component.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: October 10, 1989
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Eric Shutt, Andries G. Altena, John W. Jenkins