Patents by Inventor Junyoung Zhu

Junyoung Zhu 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).

  • Simultaneous and rapid determination of multiple component concentrations in a Kraft liquor process stream
    Patent number: 7390669
    Abstract: The present invention is a rapid method of determining the concentration of the major components in a chemical stream. The present invention is also a simple, low cost, device of determining the in-situ concentration of the major components in a chemical stream. In particular, the present invention provides a useful method for simultaneously determining the concentrations of sodium hydroxide, sodium sulfide and sodium carbonate in aqueous kraft pulping liquors through use of an attenuated total reflectance (ATR) tunnel flow cell or optical probe capable of producing a ultraviolet absorbency spectrum over a wavelength of 190 to 300 nm. In addition, the present invention eliminates the need for manual sampling and dilution previously required to generate analyzable samples.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: June 24, 2008
    Assignee: Georgia Tech Research Corporation
    Inventors: Jian Li, Xin Sheng Chai, Junyoung Zhu
  • Simultaneous and rapid determination of multiple component concentrations in a multi-component chemical process stream
    Publication number: 20050139337
    Abstract: The present invention is a rapid method of determining the concentration of the major components in a chemical stream. The present invention is also a simple, low cost, device of determining the in-situ concentration of the major components in a chemical stream. In particular, the present invention provides a useful method for simultaneously determining the concentrations of sodium hydroxide, sodium sulfide and sodium carbonate in aqueous kraft pulping liquors through use of an attenuated total reflectance (ATR) tunnel flow cell or optical probe capable of producing a ultraviolet absorbency spectrum over a wavelength of 190 to 300 nm. In addition, the present invention eliminates the need for manual sampling and dilution previously required to generate analyzable samples.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 30, 2005
    Applicant: Georgia Tech Research Corporation
    Inventors: Jian Li, Xin Chai, Junyoung Zhu