Patents by Inventor Eva Sjoblom

Eva Sjoblom 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).

  • Suspension of ammonium carbonate and/or ammonium hydrogen carbonate of improved stability and its use
    Patent number: 4670184
    Abstract: The invention relates to a suspension of ammonium carbonate and/or ammonium hydrogen carbonate in an aqueous solution saturated with respect to said salts and optionally also containing urea. For the purpose of stabilizing the suspension there is incorporated therein a polyacrylic acid having an average molecular weight (M.sub.w) in the range of 4.times.10.sup.5 -1.times.10.sup.6, preferably about 7.5.times.10.sup.5. The invention also relates to the use of the suspension for treating carbamide-resin bound, wood-based board material, such as plywood, chipboard and wood fibreboard, for reducing the emission of formaldehyde therefrom.
    Type: Grant
    Filed: March 26, 1985
    Date of Patent: June 2, 1987
    Assignee: Swedspan AB
    Inventors: Anders Bjorlin, Thomas Edberg, Eva Sjoblom, Anders Westling