Patents by Inventor Johannes Petrus Wortelboer

Johannes Petrus Wortelboer 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).

  • Patent number: 8206499
    Abstract: A process for the preparation of bitumen foam, wherein a gas is dispersed into the bitumen with a temperature of less than 200° C. and with a viscosity from 100-10,000 mPas measured at the temperature using EN 12596, wherein the process includes bringing the gas tangentially into contact with a bitumen stream, to obtain a bitumen foam that is not dehydrogenated, oxidised or otherwise chemically modified, and in which at least 10 vol % gas is distributed substantially homogeneously. This process can be applied simply and safely, and results in bitumen foam without additions being necessary for this. In this way bitumen can be processed at lower temperatures, even below 100° C., to asphalt or wearing course.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: June 26, 2012
    Assignee: De Veenvoort B.V.
    Inventor: Johannes Petrus Wortelboer
  • Publication number: 20120094068
    Abstract: The invention pertains to a reinforced covering material, comprising a reinforcement layer with apertures therein, and a polyurethane-based layer comprising 20-100% of thermosetting polyurethane, based on the weight of that layer, which polyurethane-based layer is arranged at least one side of the reinforcement layer and extends through the apertures. It may be used to provide weather- and water-proofing in construction materials, e.g. as lead flashings or in/on roofs, bridges and tunnels.
    Type: Application
    Filed: March 24, 2010
    Publication date: April 19, 2012
    Inventor: Johannes Petrus Wortelboer
  • Publication number: 20100229757
    Abstract: A process for the preparation of bitumen foam, wherein a gas is dispersed into the bitumen with a temperature of less than 200° C. and with a viscosity van 100-10.000 mPas measured at the temperature using EN 12596, wherein the process includes bringing the gas tangentially into contact with a bitumen stream, to obtain a bitumen foam that is not dehydrogenated, oxidised or otherwise chemically modified, and in which at least 10 vol % gas is distributed substantially homogeneously. This process can be applied simply and safely, and results in bitumen foam without additions being necessary for this. In this way bitumen can be processed at lower temperatures, even below 100° C., to asphalt or wearing course.
    Type: Application
    Filed: August 22, 2007
    Publication date: September 16, 2010
    Applicant: DE VEENVOORT B.V.
    Inventor: Johannes Petrus Wortelboer