1
David M Rapoport, I Barry Sorkin: Method and apparatus for the treatment of obstructive sleep apnea. New York University, Rosen Dainow & Jacobs, April 7, 1987: US04655213 (274 worldwide citation)

A nose mask assembly for the treatment of obstructive sleep apnea which is comprised of a nose mask adapted to be sealed over the nose of a patient, an inlet for supplying a continuous positive pressure of air to the mask and a threshold valve to release air from the mask.


2
David M Rapoport: Method and apparatus for the treatment of obstructive sleep apnea. New York University, Rosen Dainow & Jacobs, November 19, 1991: US05065756 (182 worldwide citation)

A method and apparatus for the treatment of obstructive sleep apnea wherein a continuous positive pressure is supplied to a nose mask from a threshold valve via a flexible tube, and air is discharged from the mask via vent holes in the mask for rapid discharge of exhaled air.


3
David M Rapoport: Method and apparatus for the treatment of obstructive sleep apnea. New York University, Rosen Dainow & Jacobs, October 1, 1996: USRE035339

A method and apparatus for the treatment of obstructive sleep apnea wherein a continuous positive pressure is supplied to a nose mask from a threshold valve via a flexible tube, and air is discharged from the mask via vent holes in the mask for rapid discharge of exhaled air.