Patents by Inventor John M. Unger

John M. Unger 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).

  • Ventilator humidifier
    Patent number: 4303601
    Abstract: A humidifier for gases, for example for medical administration, may be adapted for insertion into a well of a heater for warming liquid in the humidifier. A seamless metal can defines a cylindrical wall and a closed bottom end, containing wick means for absorbing water and presenting it in dispersed form to gases flowing through the can. Transparent probe means extend into the can and serve as a liquid level control for preferably automatically controlling the liquid level in the can to be maintained in the lower one third of the can.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: December 1, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Daniel J. Grimm, John M. Unger, Robert A. Virag
  • Dual vent filter for use with intravenous tubing
    Patent number: D307324
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: April 17, 1990
    Assignee: Baxter International Inc.
    Inventors: John M. Unger, Birendra K. Lal, Thomas Kasting
  • Dual vent filter with vent guard for use with intravenous tubing
    Patent number: D312502
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: November 27, 1990
    Assignee: Baxter International Inc.
    Inventors: John M. Unger, Birendra K. Lal, Thomas Kasting
  • Dual vent filter for use with intravenous tubing
    Patent number: D312503
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: November 27, 1990
    Assignee: Baxter International Inc.
    Inventors: John M. Unger, Birendra K. Lal, Thomas Kasting
  • Dual vent filter for use with intravenous tubing
    Patent number: D312695
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: December 4, 1990
    Assignee: Baxter International Inc.
    Inventors: John M. Unger, Birendra K. Lal, Thomas Kasting
  • Dual vent filter for use with intravenous tubing
    Patent number: D314435
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: February 5, 1991
    Assignee: Baxter International, Inc.
    Inventors: John M. Unger, Birendra K. Lal, Thomas Kasting