Patents by Inventor Yilang Zhou

Yilang Zhou 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: 10479694
    Abstract: The present disclosure provides a process of clean production of electronic grade high-purity copper oxide. The process includes (1) preparing a carbon-ammonia system solution with a certain ratio of CO2, NH3 and H2O; (2) dissolving copper under a slightly negative pressure and at a system temperature less than or equal to 60° C.; the reaction ends until the concentration of copper in the carbon-ammonia system solution reaches 80 to 140 g/L; (3) adding sodium polyacrylate; the reaction solution is heated to 60-80° C. under a reduced pressure for deamination; (4) disposing basic copper carbonate to separate the solid from the liquid by a centrifuge to give an filter cake and copper-containing clear solution; (5) calcining the filter cake at 250-600° C.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: November 19, 2019
    Inventors: Ze Tan, Siping Huang, Yilang Zhou, Wei He, Chong Wang, Haiyan Lu
  • Publication number: 20180179077
    Abstract: The present disclosure provides a process of clean production of electronic grade high-purity copper oxide. The process includes (1) preparing a carbon-ammonia system solution with a certain ratio of CO2, NH3 and H2O; (2) dissolving copper under a slightly negative pressure and at a system temperature less than or equal to 60° C.; the reaction ends until the concentration of copper in the carbon-ammonia system solution reaches 80 to 140 g/L; (3) adding sodium polyacrylate; the reaction solution is heated to 60-80° C. under a reduced pressure for deamination; (4) disposing basic copper carbonate to separate the solid from the liquid by a centrifuge to give an filter cake and copper-containing clear solution; (5) calcining the filter cake at 250-600° C.
    Type: Application
    Filed: January 15, 2018
    Publication date: June 28, 2018
    Inventors: Ze TAN, Siping Huang, Yilang Zhou, Wei He, Chong Wang, Haiyan Lu