Patents by Inventor Xueyi Liu

Xueyi 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).

  • Slow and controlled-release polymeric fertilizer with multiple nutrients, preparing process for the same and the use method of the same
    Patent number: 7753984
    Abstract: This invention relates to a slow and controlled-release polymeric fertilizer with multiple nutrients having the following general formula: wherein n, m and M are defined in the description. The polymeric fertilizer of this invention is an environment-friendly slow and controlled-release fertilizer. Its slow and controlled release action lies in self-degradation and hydrolysis. This invention also relates to the preparing process for the fertilizer and the use method of the fertilizer in agriculture.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: July 13, 2010
    Inventors: Yaqing Liu, Guizhe Zhao, Futian Zhu, Xueyi Liu
  • Slow and controlled-release polymeric fertilizer with multiple nutrients, preparing process for the same and the use method of the same
    Publication number: 20060260372
    Abstract: This invention relates to a slow and controlled-release polymeric fertilizer with multiple nutrients having the following general formula: wherein n, m and M are defined in the description. The polymeric fertilizer of this invention is an environment-friendly slow and controlled-release fertilizer. Its slow and controlled release action lies in self-degradation and hydrolysis. This invention also relates to the preparing process for the fertilizer and the use method of the fertilizer in agriculture.
    Type: Application
    Filed: April 7, 2006
    Publication date: November 23, 2006
    Inventors: Yaqing Liu, Guizhe Zhao, Futian Zhu, Xueyi Liu