Patents by Inventor William Nelko

William Nelko 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).

  • Respiration monitor
    Patent number: 5095900
    Abstract: A respiration monitor that indicates respiration or loss of respiration by detecting carbon dioxide in expired air in an endotracheal tube comprises a tubular member adapted to receive respired air from an endotracheal tube and having diametrically opposed planar windows substantially transparent to infrared radiation; an infrared analyzer comprising a source means for producing an unmodulated beam of infrared radiation passing through the planar windows and respired air, and a solid state detector means to receive infrared radiation after passage through said windows and respired air and to generate an output signal in response to the presence of CO.sub.2 in respired air, means for detecting the time between signals generated by said detector, and alarm means responsive to a predetermined delay between said signals.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: March 17, 1992
    Assignee: Mine Safety Appliances Company
    Inventors: Glenn H. Fertig, William Nelko, Richard F. Abt
  • Gas monitor and remote display
    Patent number: D862260
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: October 8, 2019
    Assignee: ChemDAQ Inc.
    Inventor: William Nelko