Patents by Inventor John Butler Whitney

John Butler Whitney 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).

  • Liquid level probe
    Patent number: 3935740
    Abstract: A capacitive probe for gauging the level of liquid within a reaction tank, or the like, in which the capacitive probe is formed by an electrode strip affixed to a pre-existing elongated member which projects into the reactor tank, wherein the tank and the strip define two electrodes of a capacitor.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: February 3, 1976
    Assignee: Sybron Corporation
    Inventor: John Butler Whitney