Patents by Inventor Heikki Mononen

Heikki Mononen 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).

  • Sulphonated polymer resin and preparation thereof
    Patent number: 6664340
    Abstract: The invention relates to sulphonated polymer resins, particularly polymer resins with a sulphonated shell layer, and the preparation thereof. Resins according to the invention are prepared by sulphonating a polymer in a non-swollen state with substantially pure gaseous sulphur trioxide substantially in the shell layer of the polymer particles. The polymer to be sulphonated can be for example a styrene-DVB copolymer. The resins according to the invention can be used for example as chromatographic resins, ion-exchange resins and catalyst resins.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: December 16, 2003
    Assignee: Danisco Finland Oy
    Inventors: Ari Kärki, Erkki Paatero, Heikki Heikkilä, Heikki Mononen, Hannu Paananen, Jari Tiihonen