Patents by Inventor Pentti Ek

Pentti Ek 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 improving biodegradation resistance and dimensional stability of cellulosic products
    Patent number: 5678324
    Abstract: A method for improving the resistance of cellulosic products against mold and decay, as well as for enhancing the dimensionally stability of the products is disclosed. The cellulosic products are subjected to heat treatment, which is carried out at an elevated temperature. The products are obtained by drying to a moisture content of less than 15%, and keeping the resulting products in a moist atmosphere at a temperature of at least about 150.degree. C. for 2 to 10 hours until a weight loss of at least 3% has been obtained.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: October 21, 1997
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Pertti Viitaniemi, Saila Jamsa, Pentti Ek, Hannu Viitanen