Patents by Inventor Wanjun Yu

Wanjun 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).

  • Publication number: 20260092904
    Abstract: A gas chromatograph for analyzing content of a gas sample includes a sample gas inlet configured to receive the gas sample and a carrier gas source which provides a carrier gas. A separation column is configured such that individual component gases in the sample gas separate as they move through the separation column. A first sample valve is coupled to the sample gas inlet, the carrier gas source and to a sample loop which is configured to contain a sample volume of the gas sample. The first sample valve injects the sample volume into the separation column and individual component gases in the sample gas separate as they move through the separation column. A detector detects a concentration of an individual component gas as a function of a sensitivity of the detector. A controller changes a response factor of the gas chromatograph by changing at least one of the sensitivity of the detector and the sample volume.
    Type: Application
    Filed: September 30, 2024
    Publication date: April 2, 2026
    Inventors: Edward Xiaoyan Zhang, Stephen Ray Samares, Wanjun Yu
  • Patent number: 9400266
    Abstract: A gas chromatograph includes a sample inlet configured to receive a sample of interest and a carrier gas inlet configured to receive a carrier gas. A plurality of fluid flow valves are operably coupled to the sample inlet and the carrier gas inlet. A detector is operably coupled to the plurality of fluid flow valves and is configured to provide an analytic indication relative to the sample of interest. A controller is operably coupled to the plurality of fluid flow valves and is coupled to memory storing user-configurable information that is accessed by the controller to affect operation of the gas chromatograph.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 26, 2016
    Inventors: Shane Hale, Wanjun Yu
  • Publication number: 20140260539
    Abstract: A gas chromatograph includes a sample inlet configured to receive a sample of interest and a carrier gas inlet configured to receive a carrier gas. A plurality of fluid flow valves are operably coupled to the sample inlet and the carrier gas inlet. A detector is operably coupled to the plurality of fluid flow valves and is configured to provide an analytic indication relative to the sample of interest. A controller is operably coupled to the plurality of fluid flow valves and is coupled to memory storing user-configurable information that is accessed by the controller to affect operation of the gas chromatograph.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Rosemount Analytical Inc.
    Inventors: Shane Hale, Wanjun Yu