Patents by Inventor Jack Alexander

Jack Alexander 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).

  • Pneumatic level control
    Patent number: 7412988
    Abstract: An improved pneumatic level control for the activation, deactivation or regulation or a downstream device or process by way of pneumatic signal in response to increased liquid volume in an attached vessel or container.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: August 19, 2008
    Inventor: Jack Alexander