Patents by Inventor Shuju Liu

Shuju Liu 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).

  • Method for producing (meth)acrylic acid and (meth)acrylic esters
    Patent number: 7981255
    Abstract: There is provided a method for rectifying a vinyl compound liquor. The method includes the steps of a) providing a rectification column operated at a temperature and pressure and b) feeding the vinyl compound liquor to be rectified into the rectification column, wherein the pressure of the rectification column and the temperature of the fed vinyl compound liquor are controlled, such that the temperature of the fed vinyl compound liquor ranges from its bubble point at the pressure of the rectification column to 10° C. lower than the bubble point.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: July 19, 2011
    Assignee: Shanghai HuaYi Acrylic Acid Co., Ltd.
    Inventors: Jingming Shao, Jun Yin, Shuju Liu, Xiaodong Chu, Shengxian Xu
  • NOVEL METHOD FOR PRODUCING (METH)ACRYLIC ACID AND (METH)ACRYLIC ESTERS
    Publication number: 20090078558
    Abstract: There is provided a method for rectifying a vinyl compound liquor, comprising the steps of: a) providing a rectification column operated at a temperature and pressure; b) feeding the vinyl compound liquor to be rectified into the rectification column; characterized in that the pressure of said rectification column and the temperature of said fed vinyl compound liquor are controlled such that the temperature of said fed vinyl compound liquor is in the range of from its bubble point at the pressure of said rectification column to 10° C. lower than said bubble point.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 26, 2009
    Applicant: SHANGHAI HUA YI ACRYLIC ACID CO., LTD.
    Inventors: Jingming SHAO, Jun YIN, Shuju LIU, Xiaodong CHU, Shengxian XU