Patents by Inventor Arto Kemppainen

Arto Kemppainen 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).

  • Procedure and apparatus for analyzing pulp slurry
    Patent number: 4911013
    Abstract: A procedure for analyzing air content of a liquid, e.g. pulp slurry, wherein the ratio I.sub.att /I.sub.sc between ultrasound attenuation and scattered ultrasound attenuation and/or the logarithm log (I.sub.att /I.sub.sc) is determined. The respective measuring apparatus comprises an ultrasound transmitter (1) and an ultrasound receiver (2) and a scattered ultrasound receiver (3), the latter being disposed to measure members (4) for determining the ratio I.sub.att /I.sub.sc and/or the logarithm log (I.sub.att /I.sub.sc).
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: March 27, 1990
    Inventors: Matti Karras, Arto Kemppainen, Eino Harkonen, Jouni Tornberg