Patents by Inventor Yongcheng Ji

Yongcheng Ji 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).

  • Method and kit for determining peracetic acid concentration in disinfectant solutions
    Patent number: 11041837
    Abstract: A kit and method for accurately determining the concentration levels of peracetic acid in a solution containing a peroxide or other oxidant is disclosed. In order to determine the concentration of peracetic acid in the solution, a pH buffer system is used to deactivate high levels of a peroxide in a disinfectant solution without interfering with active peracetic acid levels in the solution. At least one test strip is used to measure the peracetic acid concentration in the solution. A test vial for combining the solution with the pH buffer prior to contact with the test strip is provided.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 22, 2021
    Assignee: LONZA, LLC
    Inventors: Steven Jang, Richard E. Brien, Kaifeng Lu, Yongcheng Ji
  • Method and Kit for Determining Peracetic Acid Concentration in Disinfectant Solutions
    Publication number: 20190302071
    Abstract: A kit and method for accurately determining the concentration levels of peracetic acid in a solution containing a peroxide or other oxidant is disclosed. In order to determine the concentration of peracetic acid in the solution, a pH buffer system is used to deactivate high levels of a peroxide in a disinfectant solution without interfering with active peracetic acid levels in the solution. At least one test strip is used to measure the peracetic acid concentration in the solution. A test vial for combining the solution with the pH buffer prior to contact with the test strip is provided.
    Type: Application
    Filed: July 20, 2017
    Publication date: October 3, 2019
    Inventors: Steven Jang, Richard E. Brien, Kaifeng Lu, Yongcheng Ji
  • Composition and Method For Preventing Discoloration of Pyrithione Containing Compositions
    Publication number: 20140038933
    Abstract: The present invention provides a composition containing a pyrithione compound and a pyranone compound and a method of reducing discoloration of compositions containing pyrithione compounds. The composition may be a soap composition.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 6, 2014
    Applicant: Arch Chemicals, Inc.
    Inventors: George Polson, Jody Jourden, Denise B. Taylor, Yongcheng Ji