Patents by Inventor Xiaofeng Wang

Xiaofeng Wang 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).

  • Publication number: 20080242827
    Abstract: The invention relates to a method of preparing omni-meta aromatic polysulfonamide fiber which comprises three steps of preparing spinning dope, wet spinning and post treating. The said step of preparing spinning dope comprises the following steps: (1) dissolving 3,3?-diaminodiphenyl sulphone in a polar organic solvent and cooling it to ?20˜20° C.; (2) adding m-phthaloyl chloride of the same mole of the 3,3?-diaminodiphenyl sulphone to carry out a polymerization reaction; (3) then adding an inorganic base of the same mole of 3,3?-diaminodiphenyl sulphone to neutralize the hydrogen chloride produced during the polymerization reaction. The spinning dope thus prepared has a polymer solid content of 10%-20%. The fiber prepared according to the method in the present invention has a greatly improved crimpability, and evidently increased elongation at break comparing with the conventional aromatic polysulfonamide fiber, so that the spinnability of resultant yarn is improved.
    Type: Application
    Filed: November 13, 2007
    Publication date: October 2, 2008
    Applicant: SHANGHAI TANLON FIBER CO.,LTD.
    Inventors: Xiaofeng Wang, Jun Li, Ronghua Yuan, Haifeng Wang, Shunxing Lu, Shenghui Chen, Jicheng Chang, Qingrong Song
  • Publication number: 20080211039
    Abstract: A nonvolatile memory device includes a semiconductor substrate. A charge storage insulating film containing metal silicide nanocrystals is on the substrate. A gate electrode is on the charge storage insulating film. Related methods of forming metal silicide nanocrystals, and methods of forming nonvolatile memory devices including metal silicide nanocrystals, are also disclosed.
    Type: Application
    Filed: December 6, 2007
    Publication date: September 4, 2008
    Inventors: Xiaofeng Wang, Eun-Ji Jung, In-Seok Yeo
  • Publication number: 20080169531
    Abstract: A method of forming a microelectronic device includes forming a groove structure having opposing sidewalls and a surface therebetween on a substrate to define a nano line arrangement region. The nano line arrangement region has a predetermined width and a predetermined length greater than the width. At least one nano line is formed in the nano line arrangement region extending substantially along the length thereof and coupled to the surface of the groove structure to define a nano line structure. Related devices are also discussed.
    Type: Application
    Filed: September 11, 2007
    Publication date: July 17, 2008
    Inventors: ZongLiang Huo, Subramanya Mayya, Xiaofeng Wang, In-Seok Yeo
  • Patent number: 7352262
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: April 1, 2008
    Inventors: Yong Ping Xu, Wai Hoong Sun, Xiaofeng Wang, Zhe Wang, Sean Ian Saxon Liw
  • Patent number: 7283520
    Abstract: Multi-stage networks are used for data stream permutations involving merging and demultiplexing—providing arbitrary data unit time-space interchange that can be used to solve a range of problems particularly in the field of digital data communications, particularly in digital data communication involving advanced networks for exchanging data in packets, cells, or other data units.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: October 16, 2007
    Assignee: PMC-Sierra, Inc.
    Inventors: Heng Liao, Xiaofeng Wang, Zhao Wu
  • Publication number: 20070040632
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Application
    Filed: July 24, 2006
    Publication date: February 22, 2007
    Inventors: Yong Xu, Wai Sun, Xiaofeng Wang, Zhe Wang, Sean Lan Liw
  • Patent number: 7095297
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: August 22, 2006
    Assignee: National University of Singapore
    Inventors: Yong Ping Xu, Wai Hoong Sun, Xiaofeng Wang, Zhe Wang, Sean Ian Saxon Liw
  • Publication number: 20030148733
    Abstract: A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function and performance. An anti-resonance cancellation circuit removes the anti-resonance from the output of the resonators by providing a signal which is subtracted from the output of the resonator. The cancellation circuit includes a capacitor which is matched to the static capacitance of the resonator. The loads of the resonator and cancellation network are also matched.
    Type: Application
    Filed: November 12, 2002
    Publication date: August 7, 2003
    Inventors: Yong Ping Xu, Wai Hoong Sun, Xiaofeng Wang, Zhe Wang, Sean Ian Saxon Liw