Patents by Inventor Peter Wickham

Peter Wickham 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).

  • Respiratory apparatus with improved flow-flattening detection
    Publication number: 20060112960
    Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.
    Type: Application
    Filed: January 4, 2006
    Publication date: June 1, 2006
    Inventor: Peter Wickham
  • Apparatus for supplying breathable gas
    Publication number: 20050123424
    Abstract: A sub-housing received within a housing of an apparatus for supplying breathable gas, includes a gas flow path between a gas inlet and a gas outlet and an impeller in fluid communication between the gas inlet and the gas outlet. The impeller is structured and configured to be releasably engaged with a shaft associated with an electric motor that is disposed exterior to the housing, whereby rotation of the shaft causes rotation of the impeller.
    Type: Application
    Filed: November 10, 2004
    Publication date: June 9, 2005
    Applicant: ResMed Limited
    Inventors: Peter Wickham, Alexander Virr, Ian Smith, Muditha Dantanarayana, Stanley Clark
  • Respiratory apparatus with improved flow-flattening detection
    Publication number: 20050039750
    Abstract: In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.
    Type: Application
    Filed: September 27, 2004
    Publication date: February 24, 2005
    Inventors: Peter Wickham, Nicola Wickham