Patents by Inventor Jae Hyug CHOI

Jae Hyug CHOI 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 lithium hydroxide from lithium phosphate
    Patent number: 11554965
    Abstract: The present invention relates to a method of manufacturing lithium hydroxide, which includes adding at least one acid selected from hydrochloric acid, sulfuric acid, and nitric acid into lithium phosphate slurry including a lithium phosphate particle, adding an alkali material to the lithium phosphate slurry including the acid, and converting it into a lithium hydroxide aqueous solution.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: January 17, 2023
    Assignee: POSCO CO., LTD
    Inventors: Kyunghoon Kim, Sang Min Lee, Jong-Hak Lee, Ki Young Kim, Jae Hyug Choi, Souhwan Son
  • METHOD FOR PRODUCING LITHIUM CHLORIDE, AND LITHIUM CARBONATE
    Publication number: 20210292179
    Abstract: The present invention is related to a method for producing lithium chloride aqueous solution and a method for producing lithium carbonate, and comprises introducing calcium chloride into a slurry containing a solvent and lithium phosphate; and obtaining a precipitate of chloroapatite which is an poorly soluble phosphoric acid compound and a lithium chloride aqueous solution by reacting lithium phosphate and calcium chloride in the slurry containing the solvent and lithium phosphate.
    Type: Application
    Filed: June 19, 2017
    Publication date: September 23, 2021
    Inventors: Seong Yeon Kim, Kyung Seok Kim, So Yeon Lee, Wan Kee Hong, Jae Hyug Choi
  • METHOD FOR PRODUCING LITHIUM HYDROXIDE FROM LITHIUM PHOSPHATE
    Publication number: 20200079657
    Abstract: The present invention relates to a method of manufacturing lithium hydroxide, which includes adding at least one acid selected from hydrochloric acid, sulfuric acid, and nitric acid into lithium phosphate slurry including a lithium phosphate particle, adding an alkali material to the lithium phosphate slurry including the acid, and converting it into a lithium hydroxide aqueous solution.
    Type: Application
    Filed: December 13, 2017
    Publication date: March 12, 2020
    Inventors: Kyunghoon KIM, Sang Min LEE, Jong-Hak LEE, Ki Young KIM, Jae Hyug CHOI, Souhwan SON