Patents by Inventor Kari Sarkkinen

Kari Sarkkinen 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).

  • Method for acidification of soap with sodium bisulphite solution
    Patent number: 5455328
    Abstract: The invention relates to acidification of soap, wherein the acidification is performed with a sodium bisulphite solution produced by absorbing the SO.sub.2 entrained in the flue gases obtained from the combustion of odor gases derived from a chemical pulp mill into an alkaline sodium solution which is NaOH or oxidized white liquor, or with a sodium bisulphite solution which is NaHSO.sub.3 -containing mother liquid obtained from SO.sub.2 or NaHSO.sub.3 acidification of soap. The acidification can be conducted in one or more steps and by the cross-current and/or counter-current method by recycling the Na.sub.2 SO.sub.3 mother liquid obtained from the acidification.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: October 3, 1995
    Assignee: LT-Dynamics Oy
    Inventors: Olavi Vuorikari, Teemu Tanner, Jukka Koistinen, Kari Sarkkinen, Esko Mattelmaki