Patents by Inventor Martin Joseph O'Brien

Martin Joseph O'Brien 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).

  • Method and apparatus for measuring atmospheric temperature
    Patent number: 6409198
    Abstract: An advance in a passive, remote sensing device for measurement of atmospheric temperature utilizes an actuated modulator for periodically alternating the radiation detected by a detector at a selected infrared wavelength between the infrared radiation from the atmosphere and that from the infrared reference radiation emitted from a reference material such that the detector compares the radiation emitted from the atmosphere to that emitted by the reference material at the selected infrared wavelength in order to determine the atmosphere temperature. Preferably, the modulator is a MEMS based modulator having a movable grating formed by MEMS based fabrication techniques.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: June 25, 2002
    Assignee: Ophir Corporation
    Inventors: Carl Scott Weimer, Stuart Paul Beaton, Martin Joseph O'Brien, Loren Dean Nelson