Patents by Inventor Keith S. Hong

Keith S. Hong 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).

  • Bulk tank cryogenic safety system
    Patent number: 8011539
    Abstract: A bulk tank source of pressurized gas supplies gas to a consumption device, such as a beverage dispenser. A control valve is located between the bulk tank and the consumption device. A pressure monitoring system is connected to monitor the gas pressure between the bulk tank and the control valve. The pressure monitor system closes the valve when pressure drops below a first predetermined threshold, and opens the valve when the monitored pressure exceeds a second predetermined threshold greater than the first predetermined threshold.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: September 6, 2011
    Inventors: Kevin P. O'Donnell, Warren L. Williamson, Keith S. Hong