Patents by Inventor Wencai Zhang

Wencai Zhang 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: 10309171
    Abstract: The present invention relates to the field of petroleum extraction equipment, and discloses a coiled tubing reel and a coiled tubing vehicle. The coiled tubing reel comprises a reel body assembly configured to wind a coiled tubing and a driving component configured to drive the reel body assembly, wherein, the reel body assembly comprises a reel body, a reel shaft, a transmission gear, and a first bearing block and a second bearing block that are oppositely arranged and spaced from each other, wherein the reel body is fixedly fitted on the reel shaft, the two ends of the reel shaft are rotatably arranged on the first bearing block and the second bearing block respectively, the transmission gear is fixed with respect to the reel shaft to drive the reel shaft to rotate, the driving component is fixedly arranged on the first bearing block and at least partially disposed inside the reel body, and the driving component comprises a driving gear that is engaged with the transmission gear.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: June 4, 2019
    Assignee: JIANGHAN MACHINERY RESEARCH INSTITUTE LIMITED COMPANY OF CNPC
    Inventors: Huiqun He, Shoujun Liu, Gao Yang, Jun Hao, Qing Ma, Ge Xiong, Dafei Wu, Wencai Yuan, Zhiguo Song, Fuqiang Zhang, Shibin Zhang, Pingguo Liu
  • Publication number: 20190136344
    Abstract: The present invention concerns a process of selective precipitation for the purpose of recovering rare earth elements from acidic media derived from coal and coal byproducts via two main steps of sequential precipitation and selective precipitation. An intermediary step of re-precipitation can be included to further increase RRE concentrations, as well as improve contaminant metal removal.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 9, 2019
    Inventors: Wencai Zhang, Rick Q. Honaker
  • Patent number: 9297813
    Abstract: Targeting metabolic enzymes in human cancer Abstract Lung cancer is a devastating disease and a major therapeutic burden with poor prognosis. The functional heterogeneity of lung cancer (different tumor formation ability in bulk of tumor) is highly related with clinical chemoresistance and relapse. Here we find that, glycine dehydrogenase (GLDC), one of the metabolic enzyme involved in glycine metabolism, is overexpressed in various subtypes of human lung cancer and possibly several other types of cancers. GLDC was found to be highly expressed in tumor-initiating subpopulation of human lung cancer cells compared with non-tumorigenic subpopulation. By array studies we showed that normal lung cells express low levels of GLDC compared to xenograft and primary tumor. Functional studies showed that RNAi inhibition of GLDC inhibits significantly the clonal growth of tumor-initiating cells in vitro and tumor formation in immunodeficient mice.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: March 29, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Bing Lim, Wencai Zhang
  • Publication number: 20130296188
    Abstract: Targeting metabolic enzymes in human cancer Abstract Lung cancer is a devastating disease and a major therapeutic burden with poor prognosis. The functional heterogeneity of lung cancer (different tumor formation ability in bulk of tumor) is highly related with clinical chemoresistance and relapse. Here we find that, glycine dehydrogenase (GLDC), one of the metabolic enzyme involved in glycine metabolism, is overexpressed in various subtypes of human lung cancer and possibly several other types of cancers. GLDC was found to be highly expressed in tumor-initiating subpopulation of human lung cancer cells compared with non-tumorigenic subpopulation. By array studies we showed that normal lung cells express low levels of GLDC compared to xenograft and primary tumor. Functional studies showed that RNAi inhibition of GLDC inhibits significantly the clonal growth of tumor-initiating cells in vitro and tumor formation in immunodeficient mice.
    Type: Application
    Filed: November 11, 2011
    Publication date: November 7, 2013
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Bing Lim, Wencai Zhang