Patents by Inventor Johanna Maria Helena Van den Tol-Kershof

Johanna Maria Helena Van den Tol-Kershof 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).

  • Catalyst composition, its preparation and use
    Patent number: 7749937
    Abstract: An unsupported catalyst composition which comprises one or more Group VIb metals, one or more Group VIII metals, and a refractory oxide material which comprises 50 wt % or more titania, on oxide basis, which is prepared by precipitation techniques, finds use in the hydroprocessing of hydrocarbonaceous feedstocks.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: July 6, 2010
    Assignee: Shell Oil Company
    Inventors: Laszlo Domokos, Hermanus Jongkind, Willem Hartman Jurriaan Stork, Johanna Maria Helena Van Den Tol-Kershof
  • Catalyst composition, its preparation and use
    Patent number: 7557062
    Abstract: An unsupported catalyst composition which comprises one or more Group VIb metals, one or more Group VIII metals, and a refractory oxide material which comprises 50 wt % or more titania, on oxide basis, which is prepared by precipitation techniques, finds use in the hydroprocessing of hydrocarbonaceous feedstocks.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: July 7, 2009
    Assignee: Shell Oil Company
    Inventors: Laszlo Domokos, Hermanus Jongkind, Willem Hartman Jurriaan Stork, Johanna Maria Helena Van den Tol-Kershof
  • Catalyst composition, its preparation and use
    Publication number: 20040235653
    Abstract: An unsupported catalyst composition which comprises one or more Group VIb metals, one or more Group VIII metals, and a refractory oxide material which comprises 50 wt % or more titania, on oxide basis, which is prepared by precipitation techniques, finds use in the hydroprocessing of hydrocarbonaceous feedstocks.
    Type: Application
    Filed: February 20, 2004
    Publication date: November 25, 2004
    Inventors: Laszlo Domokos, Hermanus Jongkind, Willem Hartman Jurriaan Stork, Johanna Maria Helena Van Den Tol-Kershof
  • Paint formulations
    Patent number: 5661209
    Abstract: Paint formulations comprising at least one long oil alkyd resin and a solvent comprising one or more linear alkanes having a boiling range between 160.degree. and 250.degree. C., preferably between 170.degree. and 200.degree. C.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: August 26, 1997
    Assignee: Shell Oil Company
    Inventors: Nicolaas Cornelis Maria Beers, Geert Johannes Maria Bijl, Peter Koenders, Johanna Maria Helena Van Den Tol-Kershof