Patents by Inventor John Guy Bowen

John Guy Bowen 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).

  • Patent number: 10343933
    Abstract: Apparatus and method for providing a self priming, self evacuating, cyclicly operating system in which liquid is disposed in a closed, fluid tight heating chamber for sterilization. Only a single parameter, temperature, is monitored to accomplish a desired liquid SAL. A pair of valves are singly and sequentially opened and closed within four phases (steps) to provide for liquid displacement. Operation cycles through four phases which include opening an inlet valve for filling the heating chamber, heating liquid to a predetermined temperature at which the liquid is sterilized to the desired SAL, opening an outlet valve whereby internally generated pressure delivers sterilized liquid to a dispensing container and a delay for keeping valve opening separate.
    Type: Grant
    Filed: November 17, 2018
    Date of Patent: July 9, 2019
    Inventor: John Guy Bowen
  • Patent number: 9056145
    Abstract: A flow through aqueous liquid sterilization apparatus which employs substantially fixed temperatures and pressures and variable flow rates through the apparatus for controllably processing aqueous liquids to achieve predetermined values of SALs. This apparatus is also self-contained and self-cleaning using steam generated by reducing pressure during normal operation, as well as inhibiting growth of contaminating species during intermittent system shut-down periods.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: June 16, 2015
    Inventor: John Guy Bowen
  • Publication number: 20110042322
    Abstract: A flow through aqueous liquid sterilization apparatus which employs substantially fixed temperatures and pressures and variable flow rates through the apparatus for controllably processing aqueous liquids to achieve predetermined values of SALs.
    Type: Application
    Filed: November 2, 2010
    Publication date: February 24, 2011
    Inventor: John Guy Bowen
  • Patent number: 7862784
    Abstract: A flow through aqueous liquid sterilization apparatus which employs substantially fixed temperatures and pressures and variable flow rates through the apparatus for controllably processing aqueous liquids to achieve predetermined values of SALs.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: January 4, 2011
    Inventor: John Guy Bowen
  • Publication number: 20100219134
    Abstract: A flow through aqueous liquid sterilization apparatus which employs substantially fixed temperatures and pressures and variable flow rates through the apparatus for controllably processing aqueous liquids to achieve predetermined values of SALs.
    Type: Application
    Filed: May 5, 2010
    Publication date: September 2, 2010
    Inventor: John Guy Bowen