The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 26, 1999

Filed:

May. 19, 1998
Applicant:
Inventors:

See Leang Chin, Ste. Foy, CA;

Nader Naderi, Cite Universitaire, CA;

Simon Lagace, St. Nicolas, CA;

Assignee:

Universite Laval, Cite Universitaire, CA;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27M / ; B23K / ;
U.S. Cl.
CPC ...
144329 ; 144356 ; 144364 ; 1441341 ; 144380 ; 358299 ; 372 20 ; 21912118 ;
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.


Find Patent Forward Citations

Chin, See. (1999). Use of ultrafast intense laser for processing lignocellulosic material (U.S. Patent No. 5862845). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5862845

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