Patents by Inventor Yongzhai Du

Yongzhai Du 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).

  • Spatial focusing ion gate assembly and spatial focusing ion mobility spectrometer
    Patent number: 9293313
    Abstract: Provided is a spatial focusing ion mobility tube, including an ionzation source, an ion gate, a grid mesh and a faraday disc. A focusing grid mesh parallel to the ion gate is provided at one side of the ion gate away from the ionization source, and the ion gate and the focusing grid mesh combine into a spatial focusing ion gate assembly which controls the flight of the ions. The mobility tube employs a traditional design and changes the ion gate portion to one or more spatial focusing ion gate assemblies. The spatial focusing assembly can realize the injection function of the ion gate and produce the spatial compression focusing of ions.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: March 22, 2016
    Assignee: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Haiyang Li, Yongzhai Du, Weiguo Wang
  • SPATIAL FOCUSING ION GATE ASSEMBLY AND SPATIAL FOCUSING ION MOBILITY SPECTROMETER
    Publication number: 20140084155
    Abstract: Provided is a spatial focusing ion mobility tube, including an ionzation source, an ion gate, a grid mesh and a faraday disc. A focusing grid mesh parallel to the ion gate is provided at one side of the ion gate away from the ionization source, and the ion gate and the focusing grid mesh combine into a spatial focusing ion gate assembly which controls the flight of the ions. The mobility tube employs a traditional design and changes the ion gate portion to one or more spatial focusing ion gate assemblies. The spatial focusing assembly can realize the injection function of the ion gate and produce the spatial compression focusing of ions.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 27, 2014
    Applicant: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHENESE ACADEMY OF SCIENCES
    Inventors: Haiyang Li, Yongzhai Du, Weiguo Wang