Patents by Inventor Markus A. Wolperdinger

Markus A. Wolperdinger 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).

  • Gas cell for detection of trace gases via intracavity laser spectroscopy
    Patent number: 6275288
    Abstract: A gas cell is provided for detection of trace gases via intracavity laser spectroscopy. The gas cell comprises a gas cell body having a long body axis, an interior hollow portion along the long body axis, and two end portions, each end portion having two opposed surfaces, one surface of each the end portion cut to an angle with respect to the long body axis and including a laser-transparent window on each face defining ends of the interior hollow portion. The angle is dependent on operating wavelength of the spectrometer and refractive index of the window material at the operating wavelength. Each end portion is provided with a gas line connection in the proximity of the opposed surface, one gas line for introducing a sample gas into the interior hollow portion and the other gas line for exhausting the sample gas from the interior portion. Further, a gas cell holder is provided for supporting and positioning the gas cell.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: August 14, 2001
    Assignee: Innovative Lasers Corp.
    Inventors: George H. Atkinson, Markus A. Wolperdinger, Jeffrey S. Pilgrim
  • ILS sensors for drug detection within vehicles
    Patent number: 6067167
    Abstract: On-board ILS sensors for detecting illegal drugs and based on intracavity laser spectroscopy (ILS) are provided for detecting the presence of drugs and their metabolized by-product vapors in an enclosed space, such as a vehicle. The sensor comprises: (a) a laser comprising a gain medium having two opposed facets within a laser resonator and functioning as an intracavity spectroscopic device having a first end and a second end, the first end operatively associated with a partially reflecting (i.e., partially transmitting) surface; (b) a reflective or dispersive optical element (e.g.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: May 23, 2000
    Assignee: Innovative Lasers Corp.
    Inventors: George H. Atkinson, Markus A. Wolperdinger
  • ILS sensors for alcohol detection within vehicles
    Patent number: 5907407
    Abstract: On-board ILS ethyl alcohol sensors based on intracavity laser spectroscopy (ILS) are provided for detecting the presence of ethyl alcohol vapors in a vehicle. The sensor comprises: (a) a laser comprising a gain medium having two opposed facets within a laser resonator and functioning as an intracavity spectroscopic device having a first end and a second end, the first end operatively associated with a partially reflecting (i.e., partially transmitting) surface; (b) a reflective or dispersive optical element (e.g.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: May 25, 1999
    Assignee: Innovative Lasers Corporation
    Inventors: George H. Atkinson, Markus A. Wolperdinger, Jeffrey S. Pilgrim