Patents by Inventor James Qualey

James Qualey 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).

  • Multiwavelength smoke detector using white light LED
    Publication number: 20070285263
    Abstract: A smoke detector includes a smoke detection chamber containing a white light LED and a light detector. The light detector detects light within at least two distinct optical wavelength bands, and generates respective signals indicative of the intensities of the detected light. An analyzer determines, based on the measured light intensities of the different wavelength bands, whether a dangerous smoke/fire condition is present.
    Type: Application
    Filed: April 26, 2007
    Publication date: December 13, 2007
    Applicant: SimplexGrinnell LP
    Inventor: James Qualey
  • Multiwavelength smoke detector using white light LED
    Publication number: 20050057365
    Abstract: A smoke detector includes a smoke detection chamber containing a white light LED and a light detector. The light detector detects light within at least two distinct optical wavelength bands, and generates respective signals indicative of the intensities of the detected light. An analyzer determines, based on the measured light intensities of the different wavelength bands, whether a dangerous smoke/fire condition is present.
    Type: Application
    Filed: April 30, 2004
    Publication date: March 17, 2005
    Inventor: James Qualey