Patents by Inventor Zongduan GUO

Zongduan GUO 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).

  • Polyphosphoric acid calcium magnesium fertilizer, polyphosphoric acid calcium magnesium fertilizer prepared by using phosphoric acid and phosphorus tailings as raw material and preparation method therefor
    Patent number: 11787748
    Abstract: The present invention relates to a polyphosphoric acid calcium magnesium fertilizer prepared by using phosphoric acid and phosphorus tailings as raw materials and a preparation method therefor. The polyphosphoric acid calcium magnesium fertilizer is prepared by using phosphorus tailings and phosphoric acid as raw materials. Based on P2O5, MgO and CaO, in the polyphosphoric acid calcium magnesium fertilizer: total phosphorus is 50-68%, effective phosphorus is 47-66%, total magnesium is 5-18%, effective magnesium is 4-15%, total calcium is 11-20%, effective calcium is 10-18%, and all are expressed in mass percentage. Based on P2O5, the polymerization rate of the polyphosphoric acid calcium magnesium fertilizer is ?50%. The present invention also provides a preparation method for the fertilizer. The phosphorus in the product prepared by the invention has sustained-release properties. The fertilizer is well suited for crops requiring large amounts of calcium and magnesium.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: October 17, 2023
    Assignees: KINGENTA ECOLOGICAL ENGINEERING GROUP CO., LTD., KINGENTA NORSTERRA CHEMICAL CO., LTD., YUNNAN ZHONGZHENG CHEMICAL INDUSTRY CO., LTD.
    Inventors: Zhaoping Hu, Yongxiu Liu, Jianguo Zheng, Botong Wang, Chengzhi Li, Nanshu Yu, Zongduan Guo, Shanming Hu
  • POLYPHOSPHORIC ACID CALCIUM MAGNESIUM FERTILIZER, POLYPHOSPHORIC ACID CALCIUM MAGNESIUM FERTILIZER PREPARED BY USING PHOSPHORIC ACID AND PHOSPHORUS TAILINGS AS RAW MATERIALS AND PREPARATION METHOD THEREFOR
    Publication number: 20210032173
    Abstract: The present invention relates to a polyphosphoric acid calcium magnesium fertilizer prepared by using phosphoric acid and phosphorus tailings as raw materials and a preparation method therefor. The polyphosphoric acid calcium magnesium fertilizer is prepared by using phosphorus tailings and phosphoric acid as raw materials. Based on P2O5, MgO and CaO, in the polyphosphoric acid calcium magnesium fertilizer: total phosphorus is 50-68%, effective phosphorus is 47-66%, total magnesium is 5-18%, effective magnesium is 4-15%, total calcium is 11-20%, effective calcium is 10-18%, and all are expressed in mass percentage. Based on P2O5, the polymerization rate of the polyphosphoric acid calcium magnesium fertilizer is ?50%. The present invention also provides a preparation method for the fertilizer. The phosphorus in the product prepared by the invention has sustained-release properties. The fertilizer is well suited for crops requiring large amounts of calcium and magnesium.
    Type: Application
    Filed: March 21, 2019
    Publication date: February 4, 2021
    Applicants: KINGENTA ECOLOGICAL ENGINEERING GROUP CO., LTD., KINGENTA NORSTERRA CHEMICAL CO., LTD., YUNNAN ZHONGZHENG CHEMICAL INDUSTRY CO., LTD.
    Inventors: Zhaoping HU, Yongxiu LIU, Jianguo ZHENG, Botong WANG, Chengzhi LI, Nanshu YU, Zongduan GUO, Shanming HU