Patents by Inventor An Feng Li

An Feng Li 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: 8996084
    Abstract: A superconducting magnet device and a magnetic resonance imaging system not only avoid the need for costly aluminum alloy formers but also lower quench pressure effectively, have a baffle covering the former and the coil, with a gap between the baffle and the coil.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: March 31, 2015
    Assignee: Siemens PLC
    Inventors: Xian Zi Chen, An Feng Li, Xing En Yu
  • Publication number: 20130190186
    Abstract: A superconducting magnet device and a magnetic resonance imaging system not only avoid the need for costly aluminum alloy formers but also lower quench pressure effectively, have a baffle covering the former and the coil, with a gap between the baffle and the coil.
    Type: Application
    Filed: July 3, 2012
    Publication date: July 25, 2013
    Inventors: Xian Xi Chen, An Feng Li, Xing En Yu
  • Patent number: 8030927
    Abstract: A magnet temperature control device, for use in a magnetic resonance system having a magnet, includes a pipeline and a temperature regulator. The pipeline is connected to a liquid or gas circulation, and the temperature regulator is connected in series in the pipeline to regulate the temperature of the liquid or gas. A part of the pipeline is arranged inside the magnet, while the rest of the pipeline is arranged outside said magnet; the part of said pipeline which is arranged inside said magnet is distributed uniformly within the magnet, and its cross-sectional shape is in an annular, helical, radicalized or network form, or a combination thereof. Compared to the use of a heater that is distributed only on the surface of the magnet, the pipeline distributed inside the magnet can control the magnet temperature more directly and effectively, so as to smooth and eliminate the temperature change of the magnet promptly by the liquid or gas flow therein, thereby making the magnet temperature more stable.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 4, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: An Feng Li, Xiao Guang Liu
  • Publication number: 20090071626
    Abstract: A magnet temperature control device, for use in a magnetic resonance system having a magnet, includes a pipeline and a temperature regulator. The pipeline is connected to a liquid or gas circulation, and the temperature regulator is connected in series in the pipeline to regulate the temperature of the liquid or gas. A part of the pipeline is arranged inside the magnet, while the rest of the pipeline is arranged outside said magnet; the part of said pipeline which is arranged inside said magnet is distributed uniformly within the magnet, and its cross-sectional shape is in an annular, helical, radicalized or network form, or a combination thereof. Compared to the use of a heater that is distributed only on the surface of the magnet, the pipeline distributed inside the magnet can control the magnet temperature more directly and effectively, so as to smooth and eliminate the temperature change of the magnet promptly by the liquid or gas flow therein, thereby making the magnet temperature more stable.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 19, 2009
    Inventors: An Feng Li, Xiao Guang Liu