Patents by Inventor Leigh M. Johnson

Leigh M. Johnson 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).

  • System and method of monitoring respiratory parameters
    Patent number: 10893825
    Abstract: A spirometer includes a housing, a mouthpiece coupled to the housing, and a measurement unit. The measurement unit is configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air. The spirometer also includes a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit, a display coupled to the measurement unit to display an indication of the peak expiratory flow or the forced expiratory volume, and an energy harvester. The energy harvester is coupled to the measurement unit and the processing module, and is configured to receive energy from one of a group consisting of the measurement unit and an energy sensor, store the received energy in an energy storage device, and transfer the energy to the processing module.
    Type: Grant
    Filed: January 31, 2015
    Date of Patent: January 19, 2021
    Assignee: North Carolina State University
    Inventors: James P. Dieffenderfer, Mike A. Brown, Leigh M. Johnson, John F. Muth
  • SYSTEM AND METHOD OF MONITORING RESPIRATORY PARAMETERS
    Publication number: 20170007159
    Abstract: A spirometer includes a housing, a mouthpiece coupled to the housing, and a measurement unit. The measurement unit is configured to receive air expelled by a user, and generate an electrical quantity corresponding to a peak expiratory flow or a forced expiratory volume based on the expelled air. The spirometer also includes a processing module supported by the housing, and configured to receive the electrical quantity from the measurement unit, a display coupled to the measurement unit to display an indication of the peak expiratory flow or the forced expiratory volume, and an energy harvester. The energy harvester is coupled to the measurement unit and the processing module, and is configured to receive energy from one of a group consisting of the measurement unit and an energy sensor, store the received energy in an energy storage device, and transfer the energy to the processing module.
    Type: Application
    Filed: January 31, 2015
    Publication date: January 12, 2017
    Applicant: NORTH CAROLINA STATE UNIVERSITY
    Inventors: James P. Dieffenderfer, Mike A. Brown, Leigh M. Johnson, John F. Muth