Patents by Inventor Simon Lagace

Simon Lagace 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).

  • Use of ultrafast intense laser for processing lignocellulosic material
    Patent number: 5862845
    Abstract: A method of processing lignocellulosic material comprises the steps of (a) generating a pulsed laser beam consisting of a train of laser pulses, each laser pulse having a duration less than 1.times.10.sup.-9 sec. and a peak intensity of at least 1.times.10.sup.11 w/cm.sup.2 ; and (b) directing the laser beam generated in step (a) onto a surface of the lignocellulosic material to cause ionization and fragmentation of macro-molecules thereof. The method of the invention enables one to cut, carve and/or sand the surface of lignocellulosic material without, burning same or damaging the cells of the lignocellulosic material.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: January 26, 1999
    Assignee: Universite Laval
    Inventors: See Leang Chin, Nader Naderi, Simon Lagace