Patents by Inventor Yingjian Shang

Yingjian Shang 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).

  • ATMOSPHERIC PRESSURE INTERFACE ION SOURCE AND MASS SPECTROMETER
    Publication number: 20140145075
    Abstract: An API (Atmospheric Pressure Interface) ion source and a mass spectrometer with the same are disclosed. In the disclosed API ion source and the mass spectrometer with the same, the included angle ? between the capillary (2) and the mass analyzer (4) of the mass spectrometer (10) is 80°˜150°. The repeller electrode (3) is installed outside the included angle a and a 110˜380V DC voltage is applied thereto, so that the sample ions with low kinetic energy in the sample ion flow passed through the capillary (2) change the flying direction thereof by an angle with 180°-? and subsequently enter the mass analyzer (4).
    Type: Application
    Filed: July 29, 2011
    Publication date: May 29, 2014
    Applicant: BEIJING PURKINJE GENERAL INSTRUMENT CO., LTD.
    Inventors: Xiaohua Zhang, Houle Wang, Hua Zhang, Yingjian Shang, Yongguang Du