Patents by Inventor Felix M. Sandlin

Felix M. Sandlin 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).

  • Cryosurgical spraying apparatus
    Patent number: 5098428
    Abstract: An insulated, compact, mobile crysosurgical instrument is provided that has no moving parts in contact with a liquefied gas coolant retained in an insulated container. Upon interrupting normal venting from the container, the liquefied gas coolant will build up a pressure in the container which may be increased by a squeeze pressure device. That pressure will cause the liquefied gas coolant to spray from a nozzle until normal venting is restored.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: March 24, 1992
    Inventors: Felix M. Sandlin, Jack D. Waller
  • Moisture collecting chamber
    Patent number: 4398543
    Abstract: A moisture collecting chamber apparatus for testing skin by passing a standard gas over the skin area to be tested including a probe which engages the skin surface and a limit means to limit the engagement of the probe with the skin surface and provide a seal.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: August 16, 1983
    Inventors: Felix M. Sandlin, Richard L. De Villez, Jack D. Waller