Patents by Inventor Keyong Hou

Keyong Hou 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).

  • Vacuum ultraviolet photoionization and chemical ionization combined ion source for mass spectrometry
    Patent number: 9412577
    Abstract: This invention relates to the field of mass spectrometry, and more specifically to a vacuum ultraviolet photoionization and chemical ionization combined ion source, which consists of a vacuum ultraviolet light source and an ion source chamber. An ion acceleration electrode, an ion repulsion electrode, an ion extraction electrode, and a differential interface electrode positioned inside the ion source chamber are arranged along the exit direction of the vacuum ultraviolet light beam in sequence and spaced, coaxial, and parallel from each other. The ion acceleration electrode, the ion repulsion electrode, the ion extraction electrode, and the differential interface electrode are all plate structures with central through holes. The vacuum ultraviolet light beam passes through the central through holes of the electrodes along the axial direction.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: August 9, 2016
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Haiyang Li, Lei Hua, Qinghao Wu, Huapeng Cui, Keyong Hou
  • Systems and methods for sample analysis
    Patent number: 8859957
    Abstract: The invention generally relates to improved sensitivity and flexibility for mass spectrometers with limited pumping capacity, particularly mass spectrometers that are coupled with a Discontinuous Atmospheric Pressure Interface (DAPI).
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: October 14, 2014
    Assignee: Purdue Research Foundation
    Inventors: Zheng Ouyang, Robert Graham Cooks, Keyong Hou
  • VACUUM ULTRAVIOLET PHOTOIONIZATION AND CHEMICAL IONIZATION COMBINED ION SOURCE FOR MASS SPECTROMETRY
    Publication number: 20130236362
    Abstract: This invention relates to the field of mass spectrometry, and more specifically to a vacuum ultraviolet photoionization and chemical ionization combined ion source, which consists of a vacuum ultraviolet light source and an ion source chamber. An ion acceleration electrode, an ion repulsion electrode, an ion extraction electrode, and a differential interface electrode positioned inside the ion source chamber are arranged along the exit direction of the vacuum ultraviolet light beam in sequence and spaced, coaxial, and parallel from each other. The ion acceleration electrode, the ion repulsion electrode, the ion extraction electrode, and the differential interface electrode are all plate structures with central through holes. The vacuum ultraviolet light beam passes through the central through holes of the electrodes along the axial direction.
    Type: Application
    Filed: February 17, 2011
    Publication date: September 12, 2013
    Inventors: Haiyang Li, Hua Lei, Qinghao Wu, Huapeng Cui, Keyong Hou
  • SYSTEMS AND METHODS FOR SAMPLE ANALYSIS
    Publication number: 20130146759
    Abstract: The invention generally relates to improved sensitivity and flexibility for mass spectrometers with limited pumping capacity, particularly mass spectrometers that are coupled with a Discontinuous Atmospheric Pressure Interface (DAPI).
    Type: Application
    Filed: February 25, 2011
    Publication date: June 13, 2013
    Inventors: Zheng Ouyang, Robert Graham Cooks, Keyong Hou