Patents by Inventor Phillippe Chalvignac

Phillippe Chalvignac 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).

  • Breathing assistance device comprising a gas regulating valve and associated breathing assistance method
    Patent number: 8464714
    Abstract: The invention relates to a breathing assistance device for a patient (P), the device including: —a source of respiratory pressurized gas (S), a gas transmission duct (31) comprising a distal end (31d) coupled to said source and a proximal end (31p) coupled to the patient, —a gas regulating valve (32, 50) interposed in the gas transmission duct at a proximal location, comprising a leakage orifice (531) and an obstruction means (54) capable of varying the opening of the leakage orifice upon signal of controlling means (35) and allowing a bidirectional gas flow through the leakage orifice in both expiration and inspiration phases.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: June 18, 2013
    Assignee: ResMed Paris
    Inventor: Phillippe Chalvignac