Patents by Inventor Zhi-Jian Yu

Zhi-Jian Yu 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 cleaning and decontaminating compositions and methods
    Publication number: 20030096720
    Abstract: A composition for simultaneous cleaning and decontaminating a device. The composition is a per-compound oxidant in an amount effective for decontaminating the device and an enzyme in an amount effective for cleaning the device. The device may be a medical device such as an endoscope or kidney dialyzer and a plurality of devices can be cleaned using the same composition. The composition may additionally contain a corrosion inhibitor in an amount effective to prevent corrosion of a metal, a chelator, a buffer, a dye and combinations thereof.
    Type: Application
    Filed: June 27, 2002
    Publication date: May 22, 2003
    Applicant: Metrex Research Corporation
    Inventors: Stanley William Huth, Zhi-Jian Yu
  • Cleaning and decontaminating dialyzers by per-compound solutions
    Patent number: 6468472
    Abstract: A composition for cleaning and decontaminating medical devices such as dialyzers. A per-compound oxidant, for example, hydrogen peroxide (H2O2) and/or peracetic acid, is mixed with a buffer such as dipotassium hydrogen phosphate. The pH of the composition is between about 5-11. The composition effectively cleans the device, can achieve high level disinfection and sterilization of the device and is non-corrosive to plastics and adhesives used in the device.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: October 22, 2002
    Assignee: Metrex Research Corporation
    Inventors: Zhi-Jian Yu, Stanley William Huth
  • Simultaneous cleaning and decontaminating compositions and methods
    Patent number: 6448062
    Abstract: A composition for simultaneous cleaning and decontaminating a device. The composition is a per-compound oxidant in an amount effective for decontaminating the device and an enzyme in an amount effective for cleaning the device. The device may be a medical device such as an endoscope or kidney dialyzer and a plurality of devices can be cleaned using the same composition. The composition may additionally contain a corrosion inhibitor in an amount effective to prevent corrosion of a metal, a chelator, a buffer, a dye and combinations thereof.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: September 10, 2002
    Assignee: Metrex Research Corporation
    Inventors: Stanley William Huth, Zhi-Jian Yu