Patents by Inventor Foster E. Madison

Foster E. Madison 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 humidifier
    Patent number: 6354293
    Abstract: The breathing humidifier is a reservoir containing a sponge and water. The reservoir is generally shaped to fit the contour of the users face between the upper lip and the nose. The sponge is shaped to fit against the nostril openings. Two openings are located at the bottom of the reservoir into which a gas supply cannula may be inserted. When gas such as oxygen is supplied to the breathing humidifier the gas passes through the water-sponge and heat environment to exit into the nose.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: March 12, 2002
    Inventor: Foster E. Madison