Patents by Inventor Ronald van Heek

Ronald van Heek 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).

  • Kraft pulp yield by heat treatment of polysulphide liquors generated by oxidation
    Publication number: 20050072539
    Abstract: Oxidized white liquor is heat treated to increase the concentration of polysulphide measured at 285 or 286 nm (PSUV) or measured at 416 nm (PSVIS) and the PSUV/PSGR or PSVIS/PSGR ratio, whereby the content of active polysulphide in the total polysulphide is increased which active polysulphide can be exploited to increase pulp yield in Kraft pulping.
    Type: Application
    Filed: November 19, 2004
    Publication date: April 7, 2005
    Inventors: Ronald van Heek, Gilles Dorris, Victor Uloth, Natalie Page, Thomas Hu, Denys Leclerc