Patents Assigned to Supertrae A/S
  • Method of performing an impregnating or extracting treatment on a resin-containing wood substrate
    Patent number: 6623600
    Abstract: In impregnating or extracting treatments of resin-containing wood substrates using a resin-soluble supercritical fluid as delivering or extractive solvent medium problems due to exudation of resin from the wood substrate at pressure release necessary before the termination of the treatment are avoided or reduced by a controlled pulsating pressure release down to atmospheric pressure. Thereby the total process time can be substantially reduced.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: September 23, 2003
    Assignee: Supertrae A/S
    Inventor: Ole Henriksen