Patents by Inventor Xianfu Wang

Xianfu 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).

  • Patent number: 11114579
    Abstract: A method for preparing an ultrathin two-dimensional (2D) monocrystalline nanosheet, the method including: 1) placing BiX3 powder where X=I, Br, or Cl in a crucible, and putting the crucible on a first heating zone of a furnace disposed at a gas inlet of a quartz tube; placing substrates covered with metal sheets on a second heating zone of the furnace disposed at a gas outlet of the quartz tube; 2) vacuumizing the quartz tube; pumping Ar gas into the quartz tube until the air pressure is 101.325 kPa; pumping a carrier gas into the quartz tube; and 3) heating and maintaining the second heating zone; heating the first heating zone for BiX3 evaporation until producing chemical reaction between BiX3 and the metal sheets, and preparing ultrathin 2D nanosheets on the substrates simultaneously; and cooling the substrate naturally to 15-30° C.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 7, 2021
    Assignee: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
    Inventors: Jie Xiong, Chuanhui Gong, Yang Wang, Gaofeng Rao, Chujun Yin, Chaoyi Yan, Junwei Chu, Jianwen Huang, Miao Zhang, Xinrui Chen, Yuqing Liu, Chunyang Wu, Xianfu Wang, Liping Dai, Wanli Zhang, Yanrong Li
  • Publication number: 20200403111
    Abstract: A method for preparing an ultrathin two-dimensional (2D) monocrystalline nanosheet, the method including: 1) placing BiX3 powder where X=I, Br, or Cl in a crucible, and putting the crucible on a first heating zone of a furnace disposed at a gas inlet of a quartz tube; placing substrates covered with metal sheets on a second heating zone of the furnace disposed at a gas outlet of the quartz tube; 2) vacuumizing the quartz tube; pumping Ar gas into the quartz tube until the air pressure is 101.325 kPa; pumping a carrier gas into the quartz tube; and 3) heating and maintaining the second heating zone; heating the first heating zone for BiX3 evaporation until producing chemical reaction between BiX3 and the metal sheets, and preparing ultrathin 2D nanosheets on the substrates simultaneously; and cooling the substrate naturally to 15-30° C.
    Type: Application
    Filed: June 19, 2020
    Publication date: December 24, 2020
    Inventors: Jie XIONG, Chuanhui GONG, Yang WANG, Gaofeng RAO, Chujun YIN, Chaoyi YAN, Junwei CHU, Jianwen HUANG, Miao ZHANG, Xinrui CHEN, Yuqing LIU, Chunyang WU, Xianfu WANG, Liping DAI, Wanli ZHANG, Yanrong LI
  • Patent number: 8596538
    Abstract: An exemplary barcode decoding chip includes a scan module, a boundary identification module, a direction identification module, a bar space boundary processing module, a symbol parameter identification module, a symbol character extraction module, and a decoding module.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: December 3, 2013
    Assignee: Fujian Newland Computer Co., Ltd.
    Inventors: Yali Sun, Dong Guo, Rongsheng Liu, Xianfu Wang, Lunyu Hu, Wenchuan Chen, Qiang Cai, Xiaodan Cai, Qingcai Zhang, Chunguang Zheng, Yousen Qiu, Zhilong Lin, Guoliang Zhuang, Zhiyu Wu
  • Patent number: 8550352
    Abstract: An exemplary QR barcode decoding chip includes a characteristic searching unit configured for searching for a characteristic pattern in the barcode image to determine pixel coordinates of the characteristic pattern; a barcode parameter acquiring unit configured for acquiring a barcode parameter according to the pixel coordinates of the characteristic pattern; a version/format parameter acquiring unit configured for acquiring a version/format parameter; a correction characteristic acquiring unit configured for searching for a characteristic position in the barcode image and acquiring a correction characteristic according to the characteristic position; a module information processing unit configured for calculating a grayscale value corresponding to a module according to the version/format parameter, the barcode parameter and the correction characteristic; a binarizing unit configured for binarizing the module; a codeword extracting unit configured for extracting a codeword according to the binarized module; a
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: October 8, 2013
    Assignee: Fujian Newland Computer Co., Ltd.
    Inventors: Dong Guo, Rongsheng Liu, Xianfu Wang, Fusheng Lan
  • Publication number: 20110290877
    Abstract: An exemplary barcode decoding chip includes a scan module, a boundary identification module, a direction identification module, a bar space boundary processing module, a symbol parameter identification module, a symbol character acquisition module, and a decoding module.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 1, 2011
    Applicant: FUJIAN NEWLAND COMPUTER CO., LTD.
    Inventors: Yali Sun, Dong Guo, Rongsheng Liu, Xianfu Wang, Lunyu Hu, Wenchuan Chen, Qiang Cai, Xiaodan Cai, Qingcai Zhang, Chunguang Zheng, Yousen Qiu, Zhilong Lin, Guoliang Zhuang, Zhiyu Wu
  • Publication number: 20110290879
    Abstract: An exemplary QR barcode decoding chip includes a characteristic searching unit configured for searching for a characteristic pattern in the barcode image to determine pixel coordinates of the characteristic pattern; a barcode parameter acquiring unit configured for acquiring a barcode parameter according to the pixel coordinates of the characteristic pattern; a version/format parameter acquiring unit configured for acquiring a version/format parameter; a correction characteristic acquiring unit configured for searching for a characteristic position in the barcode image and acquiring a correction characteristic according to the characteristic position; a module information processing unit configured for calculating a grayscale value corresponding to a module according to the version/format parameter, the barcode parameter and the correction characteristic; a binarizing unit configured for binarizing the module; a codeword extracting unit configured for extracting a codeword according to the binarized module; a
    Type: Application
    Filed: May 31, 2011
    Publication date: December 1, 2011
    Applicant: FUJIAN NEWLAND COMPUTER CO., LTD.
    Inventors: Dong Guo, Rongsheng Liu, Xianfu Wang, Fusheng Lan