Patents by Inventor Marek Tadeusz Tokarz

Marek Tadeusz Tokarz 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).

  • Polysilicate microgels and silica-based materials
    Patent number: 6673208
    Abstract: The present invention relates to polysilicate microgels, their preparation and use in paper making and water purification, the polysilicate microgels being obtainable by a process which comprises bringing into contact (i) particles of a salt AB with an aqueous silicate or polysilicate solution, (ii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the salt AB is precipitating in the aqueous phase, or (iii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the ions A and B represent ions of a precipitable salt AB having a pKS value of at least 4, measured at 20° C. in water. The invention further relates to aqueous silicate or polysilicate solutions, their preparation and use as precursors for polysilicate microgels.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: January 6, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Michael Persson, Marek Tadeusz Tokarz, Rein Sikkar
  • Polysilicate microgels and silica-based materials
    Publication number: 20020179267
    Abstract: The present invention relates to polysilicate microgels, their preparation and use in paper making and water purification, the polysilicate microgels being obtainable by a process which comprises bringing into contact (i) particles of a salt AB with an aqueous silicate or polysilicate solution, (ii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the salt AB is precipitating in the aqueous phase, or (iii) an ion A with an ion B in the presence of an aqueous silicate or polysilicate solution, whereby the ions A and B represent ions of a precipitable salt AB having a pKS value of at least 4, measured at 20° C. in water. The invention further relates to aqueous silicate or polysilicate solutions, their preparation and use as precursors for polysilicate microgels.
    Type: Application
    Filed: July 1, 2002
    Publication date: December 5, 2002
    Inventors: Michael Persson, Marek Tadeusz Tokarz, Rein Sikkar