Patents by Inventor Xiaowei YAN

Xiaowei YAN 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).

  • Capture buffer of digital predistortion systems
    Patent number: 9287833
    Abstract: An improved DPD system includes a predistortion module having at least one predistortion function. The predistortion module is configured to receive and subsequently process a baseband signal. The system also includes a power amplifier configured to receive the processed baseband signal from the predistortion module. The system further includes a model calculator configured to program priorities for predistortion functions so that the processed baseband signal transmitted from the predistortion module corresponds to the transmission power of the power amplifier. The model calculator is further configured to send a trigger signal to indicate when data capture from the power amplifier should begin so as to update the predistortion functions. A trigger module in the system is configured to receive the trigger signal and to initiate data capture from the power amplifier upon receipt of the trigger signal.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: March 15, 2016
    Assignees: ZTE Corporation, ZTE Wistron Telecom AB
    Inventors: James Peroulas, Aimin You, Qun Liao, Xiaowei Yan, Yiqun Mo, Zhaoquan Zeng
  • Preparation method of 5-[[2(R)-[1(R)-[3,5-bis(trifluoromethyl) phenyl]ethoxy]-3(S)-4-fluorophenyl-4-morpholinyl]methyl]-1,2-dihydro-3H-1,2,4-triazole-3-one
    Patent number: 8940890
    Abstract: Disclosed is a synthesis method of a compound of formula 1,5-[[2(R)-[1(R)-[3,5-bis(trifluoromethyl)phenyl]ethoxyl]-3(S)-4-fluorophenyl-4-morpholinyl]methyl]-1,2-dihydro-3H-1,2,4-triazole-3-one (i.e. aprepitant), which comprises cyclizing a compound of formula 4 in a solvent, wherein R is C1-C5 alkyl. The intermediate for preparing aprepitant is also disclosed. The present method is especially suitable for industrial production of aprepitant.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: January 27, 2015
    Assignee: Chengdu DI'AO Pharmaceutical Group Co., Ltd.
    Inventors: Jianxin Ji, Qiang Zhang, Fengtian Du, Yi Jin, Tao Zhang, Na Guo, Xiaowei Yan, Yongrongn Yang, Bogang Li
  • CAPTURE BUFFER OF DIGITAL PREDISTORTION SYSTEMS
    Publication number: 20140333377
    Abstract: An improved DPD system includes a predistortion module having at least one predistortion function. The predistortion module is configured to receive and subsequently process a baseband signal. The system also includes a power amplifier configured to receive the processed baseband signal from the predistortion module. The system further includes a model calculator configured to program priorities for predistortion functions so that the processed baseband signal transmitted from the predistortion module corresponds to the transmission power of the power amplifier. The model calculator is further configured to send a trigger signal to indicate when data capture from the power amplifier should begin so as to update the predistortion functions. A trigger module in the system is configured to receive the trigger signal and to initiate data capture from the power amplifier upon receipt of the trigger signal.
    Type: Application
    Filed: April 19, 2011
    Publication date: November 13, 2014
    Applicants: ZTE WISTRON TELECOM AB, ZTE CORPORATION
    Inventors: James Peroulas, Aimin You, Qun Liao, Xiaowei Yan, Yiqun Mo, Zhaoquan Zeng
  • Use of gene expression signatures to determine cancer grade
    Patent number: 8637240
    Abstract: Signatures indicative of cancer grades are based on over- and under-expression of 214 genes that characterize expression patterns in CD133+ cells.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 28, 2014
    Assignee: Institute for Systems Biology
    Inventors: Qiang Tian, Greg D. Foltz, Leroy Hood, Xiaowei Yan
  • PREPARATION METHOD OF 5-[[2(R)-[1(R)-[3,5-BIS(TRIFLUOROMETHYL) PHENYL]ETHOXY]-3(S)-4-FLUOROPHENYL-4-MORPHOLINYL]METHYL]-1,2-DIHYDRO-3H-1,2,4-TRIAZOLE-3-ONE
    Publication number: 20130109853
    Abstract: Disclosed is a synthesis method of a compound of formula 1,5-[[2(R)-[1(R)-[3,5-bis(trifluoromethyl)phenyl]ethoxyl]-3(S)-4-fluorophenyl-4-morpholinyl]methyl]-1,2-dihydro-3H-1,2,4-triazole-3-one (i.e. aprepitant), which comprises cyclizing a compound of formula 4 in a solvent, wherein R is C1-C5 alkyl. The intermediate for preparing aprepitant is also disclosed. The present method is especially suitable for industrial production of aprepitant.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 2, 2013
    Inventors: Jianxin Ji, Qiang Zhang, Fengtian Du, Yi Jin, Tao Zhang, Na Guo, Xiaowei Yan, Yongrong Yang, Bogang Li
  • USE OF GENE EXPRESSION SIGNATURES TO DETERMINE CANCER GRADE
    Publication number: 20110105340
    Abstract: Signatures indicative of cancer grades are based on over- and under-expression of 214 genes that characterize expression patterns in CD133+ cells.
    Type: Application
    Filed: September 28, 2010
    Publication date: May 5, 2011
    Inventors: Qiang TIAN, Greg D. FOLTZ, Leroy HOOD, Xiaowei YAN