Patents by Inventor Yingchang Han

Yingchang Han 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).

  • Publication number: 20150313272
    Abstract: Method and apparatus of producing sterile liquid food products are provided. The method comprising the steps of: aseptically sterilizing heat sensitive food materials using a sterile filter; filling an aseptic container having a plastic member with the sterilized heat sensitive materials; heat sterilizing non-heat sensitive food materials using a sterilization process in a production line; connecting the filled aseptic container to the product line using a heat sealer that creates a sterile connection between the plastic member of the aseptic container and a fluid flow path into the production line; feeding the sterilized heat sensitive food materials through a dosing valve and mixing the sterilized heat sensitive food material with the non-heat sensitive food materials that have been sterilized; and filling a second container with the mixture.
    Type: Application
    Filed: July 12, 2012
    Publication date: November 5, 2015
    Inventors: Yingchang Han, Ernst Beutler
  • Patent number: 8920717
    Abstract: This invention provides a method for processing produce to reduce microorganisms thereon by treating the produce in a treatment chamber. The method comprises exposing the produce to an atmosphere comprising gaseous chlorine dioxide and a carrier gas in a treatment chamber and can comprise controlling the concentration of chlorine dioxide in the treatment chamber, moving the produce in the treatment chamber during exposure to the gaseous chlorine dioxide, spraying water to remove the gaseous chlorine dioxide, and purging the treatment chamber to remove any residual chlorine dioxide.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: December 30, 2014
    Assignee: Purdue Research Foundation
    Inventors: Philip E. Nelson, Richard H. Linton, Yingchang Han, Travis L. Selby
  • Publication number: 20100075004
    Abstract: This invention provides an apparatus and method for processing produce to reduce microorganisms thereon by treating the produce in a treatment chamber. The treatment chamber comprises a produce receiver disposed in the treatment chamber, a means for providing a gas stream comprising chlorine dioxide and a carrier gas into the treatment chamber, a chlorine dioxide sensor in communication with the treatment chamber, and a means for controlling the concentration of chlorine dioxide in the treatment chamber. The method comprises exposing the produce to an atmosphere comprising gaseous chlorine dioxide and a carrier gas in a treatment chamber and can comprise controlling the concentration of chlorine dioxide in the treatment chamber, moving the produce in the treatment chamber during exposure to the gaseous chlorine dioxide, spraying water to remove the gaseous chlorine dioxide, and purging the treatment chamber to remove any residual chlorine dioxide.
    Type: Application
    Filed: July 7, 2009
    Publication date: March 25, 2010
    Inventors: Philip E. Nelson, Richard H. Linton, Yingchang Han, Travis L. Selby
  • Publication number: 20090246074
    Abstract: The invention comprises a system and method for sterilizing an aseptic processing line comprising the steps of generating chlorine dioxide gas, introducing the chlorine dioxide gas inside the aseptic processing line as a sterilization step, and removing the chlorine dioxide gas from the aseptic processing line. The aseptic processing line comprises at least one processing apparatus such as a filter, heater, cooler, filler, surge tank, and/or packager connected to a piping network.
    Type: Application
    Filed: December 17, 2008
    Publication date: October 1, 2009
    Inventors: Philip E. Nelson, Yingchang Han
  • Patent number: 7571676
    Abstract: This invention provides an apparatus and method for processing produce to reduce microorganisms thereon by treating the produce in a treatment chamber. The treatment chamber comprises a produce receiver disposed in the treatment chamber, a means for providing a gas stream comprising chlorine dioxide and a carrier gas into the treatment chamber, a chlorine dioxide sensor in communication with the treatment chamber, and a means for controlling the concentration of chlorine dioxide in the treatment chamber. The method comprises exposing the produce to an atmosphere comprising gaseous chlorine dioxide and a carrier gas in a treatment chamber and can comprise controlling the concentration of chlorine dioxide in the treatment chamber, moving the produce in the treatment chamber during exposure to the gaseous chlorine dioxide, spraying water to remove the gaseous chlorine dioxide, and purging the treatment chamber to remove any residual chlorine dioxide.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: August 11, 2009
    Assignee: Purdue Research Foundation
    Inventors: Philip E. Nelson, Richard H. Linton, Yingchang Han, Travis L. Selby
  • Publication number: 20060110280
    Abstract: This invention provides an apparatus and method for processing produce to reduce microorganisms thereon by treating the produce in a treatment chamber. The treatment chamber comprises a produce receiver disposed in the treatment chamber, a means for providing a gas stream comprising chlorine dioxide and a carrier gas into the treatment chamber, a chlorine dioxide sensor in communication with the treatment chamber, and a means for controlling the concentration of chlorine dioxide in the treatment chamber. The method comprises exposing the produce to an atmosphere comprising gaseous chlorine dioxide and a carrier gas in a treatment chamber and can comprise controlling the concentration of chlorine dioxide in the treatment chamber, moving the produce in the treatment chamber during exposure to the gaseous chlorine dioxide, spraying water to remove the gaseous chlorine dioxide, and purging the treatment chamber to remove any residual chlorine dioxide.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 25, 2006
    Inventors: Philip Nelson, Richard Linton, Yingchang Han, Travis Selby
  • Publication number: 20040101438
    Abstract: Method and apparatus for sterilizing or sanitizing a container for food wherein chlorine dioxide gas is produced outside or inside the container, is circulated inside and through the container, is removed from the container, and is reclaimed by dissolving it in a solvent.
    Type: Application
    Filed: September 9, 2003
    Publication date: May 27, 2004
    Inventors: Philip E. Nelson, Yingchang Han