Patents by Inventor Shiqing Qi

Shiqing Qi 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: 20090272651
    Abstract: A method for producing high-purity nickel, which involves using a hydrochloric acid solution system to electro-deposit high-purity nickel, characterized in that, it includes the following steps sequentially: 3N-grade-grade electrolytic nickel was used as anode and the electro-deposition was carried out in a hydrochloric acid system, the solution obtained from the electro-deposition was extracted by a three-level countercurrent extraction using anion extraction solvents, and then back-extracted and degreased. After that, the solution was passed through the anion exchange resin to be further purified by ion exchange, and finally put into the electrolytic cell to deposit nickel.
    Type: Application
    Filed: April 13, 2005
    Publication date: November 5, 2009
    Applicant: JINCHUAN GROUP LTD.
    Inventors: Yongjun Li, Jun Wu, Wengang Zheng, Zhenhua Chen, Zhongqiang Yan, Yongfeng Ma, Shiqing Qi, Wenying Cao