Patents by Inventor Kari Leskinen

Kari Leskinen 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 the preparation of polymers
    Patent number: 6245882
    Abstract: Method for the manufacture of a phenolic resin emulsion and/or dispersion, wherein an aldehyde, a phenolic compound and an alkaline catalyst are allowed to react at a temperature of 40-100° C. until a desired degree of condensation is achieved, and the pH of the resin is adjusted to a value below 9 using an acid in the presence of a surface active agent or a mixture thereof at a temperature below 100° C. and a phenolic resin emulsion and/or dispersion is obtained providing a colorless or light-colored glue line or surface when cured.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: June 12, 2001
    Assignee: Neste Chemicals Oy
    Inventors: Leena Matilainen, Guomin Bian, Claude Ostiguy, Rick Cheng, Matti Satuli, Kari Leskinen, Kwok Tang