Patents by Inventor George Lemire

George Lemire 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).

  • Modular ladder assembly for mine raise and kit therefor
    Publication number: 20020043426
    Abstract: The kit is used for the assembly of a modular ladder assembly in an ascending mine raise having a peripheral wall.
    Type: Application
    Filed: August 10, 2001
    Publication date: April 18, 2002
    Inventors: Marcelin Bruneau, Louis-Georges Lemire
  • Laser-based detection of nitro-containing compounds
    Patent number: 5364795
    Abstract: An apparatus and method for the sensitive detection of atmospheric and/or surface absorbed nitrocompounds has been developed. The apparatus and method may be employed to detect the presence or absence of propellants, explosives, and nitropollutants. The unique feature herein is that the apparatus and method employ one laser operating at or near 226 nm. The laser photofragments the target molecule and facilitates the detection of the characteristic NO fragment, by resonance-enhanced multiphoton ionization (REMPI) and/or laser-induced-fluorescence (LIF) via its A.sup.2 .SIGMA..sup.+ -X.sup.2 II.sub.i transitions. The analytical utility of this apparatus and method has been demonstrated on numerous compounds, such as, DMNA, nitromethane, nitro-benzene, TNT, and RDX. With the present system, a limit of detection of 8 and 24 ppb is obtained for RDX and TNT, respectively, using only 100 micro-Joules per pulse of laser energy.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: November 15, 1994
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Rosario Sausa, Josef Simeonsson, George Lemire