Patents by Inventor Xindu Geng

Xindu Geng 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).

  • Patent number: 9566537
    Abstract: A multidimensional liquid chromatography separation system has a mobile-phase storage tank, a first liquid transfer device, a second liquid transfer device, a first sample introduction device, a second sample introduction device, a separation device, a collection, storage device, at least two drainage devices and a flow path switching device. A separation method for protein separation using the multidimensional liquid chromatography separation system has the steps of: 1) preparation in advance, 2) the first dimensional separation, 3) collection and storage of the intermediate fraction, 4) the second dimensional or multidimensional separation and repeating the steps 3) and 4).
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 14, 2017
    Assignees: XI'AN AOLAN SCIENCE AND TECHNOLOGY CO., LTD., NORTHWEST UNIVERSITY
    Inventor: Xindu Geng
  • Publication number: 20150165343
    Abstract: A multidimensional liquid chromatography separation system has a mobile-phase storage tank, a first liquid transfer device, a second liquid transfer device, a first sample introduction device, a second sample introduction device, a separation device, a collection, storage device, at least two drainage devices and a flow path switching device. A separation method for protein separation using the multidimensional liquid chromatography separation system has the steps of: 1) preparation in advance, 2) the first dimensional separation, 3) collection and storage of the intermediate fraction, 4) the second dimensional or multidimensional separation and repeating the steps 3) and 4).
    Type: Application
    Filed: March 2, 2015
    Publication date: June 18, 2015
    Inventor: Xindu GENG
  • Patent number: 7208085
    Abstract: The present invention discloses a new and improved kind of chromatographic cake and its manufacturing methods and applications. The objective of this invention is to provide an improved chromatographic apparatus and methods for manufacturing such an apparatus, whereby the separation and simultaneous renaturation and purification of biopolymers can be efficiently performed with excellent results. The chromatographic cakes of this invention generally comprise a chromatographic packing cake with a mobile phase inlet and a mobile phase outlet, together with a chromatographic packing packed into an inner cavity region of the chromatographic packing cake. The ratio of the thickness to the diameter of the inner cavity region of the chromatographic packing cake is less than or equal to 1.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: April 24, 2007
    Assignee: Northwest University
    Inventors: Xindu Geng, Yangjun Zhang
  • Publication number: 20040195161
    Abstract: The present invention discloses a new and improved kind of chromatographic cake and its manufacturing methods and applications. The objective of this invention is to provide an improved chromatographic apparatus and methods for manufacturing such an apparatus, whereby the separation and simultaneous renaturation and purification of biopolymers can be efficiently performed with excellent results. The chromatographic cakes of this invention generally comprise a chromatographic packing cake with a mobile phase inlet and a mobile phase outlet, together with a chromatographic packing packed into an inner cavity region of the chromatographic packing cake. The ratio of the thickness to the diameter of the inner cavity region of the chromatographic packing cake is less than or equal to 1.
    Type: Application
    Filed: May 24, 2004
    Publication date: October 7, 2004
    Inventors: Xindu Geng, Yangjun Zhang