Patents by Inventor Kari Yrjölä

Kari Yrjölä 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).

  • Coated board, a process for its manufacture, and containers and packaging formed therefrom
    Patent number: 6531196
    Abstract: The invention relates to coated board, a process for its manufacture, and containers and packaging formed therefrom. The board comprises at least one polymer-based coat preventing the transmission of liquids and gases, which coat is according to the invention made from a polymer dispersion to which talc particles are added so that talc will constitute 30-80% of the dry weight of the dried coat. The coating is applied onto the board during its manufacture as on-line coating. The board may be, for example, a multi-layer board (2) which has a middle layer (6) containing CTMP or other similar mechanical pulp, on its both sides outer layers (7) formed from sulfate pulp, against these on both sides of the board (2) talc-containing polymeric barrier layers (3), and on one side of the board a heat sealing layer (9) introduced onto the barrier layer (3).
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: March 11, 2003
    Assignees: Stora Enso Oyj, Raisio Chemicals Oy
    Inventors: Yrjö Aho, Tomi Kimpimäki, Kari Nurmi, Tapani Penttinen, Kimmo Santamäki, Kari Yrjölä