Patents by Inventor Hyun Ji Jeong

Hyun Ji Jeong 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).

  • Cement mortar additive comprising hydrophobic silica, and preparation method therefor
    Patent number: 11827565
    Abstract: The present disclosure relates to a cement mortar additive and a method of manufacturing the same. More particularly, the present disclosure relates to a cement mortar additive for solving the inhomogeneity, which is a problem caused by the deliquescence of urea, so that the deterioration of the physical properties of a cement mortar is prevented and the open time, water retentivity, and workability of the cement mortar are improved, and to a method of manufacturing the cement mortar additive.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 28, 2023
    Assignee: LOTTE FINE CHEMICAL CO., LTD.
    Inventors: Hyun Ji Jeong, Bong Jin Kwon, Ji Eun Ju
  • Additive composition for tile cement mortar and tile cement mortar comprising same
    Patent number: 11345643
    Abstract: Provided are an additive composition for a tile cement mortar and a tile cement mortar including the additive composition for a tile cement mortar. The provided additive composition for a tile cement mortar includes cellulose ether and urea, wherein the amount of the urea is from 5 parts by weight to 43 parts by weight based on 100 parts by weight of the cellulose ether.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: May 31, 2022
    Assignee: LOTTE FINE CHEMICAL CO., LTD.
    Inventors: Yun Na Kim, Nak Woon Choi, Bong Jin Kwon, Min Seok Kang, Hyun Ji Jeong
  • CEMENT MORTAR ADDITIVE COMPRISING HYDROPHOBIC SILICA, AND PREPARATION METHOD THEREFOR
    Publication number: 20220002200
    Abstract: The present disclosure relates to a cement mortar additive and a method of manufacturing the same. More particularly, the present disclosure relates to a cement mortar additive for solving the inhomogeneity, which is a problem caused by the deliquescence of urea, so that the deterioration of the physical properties of a cement mortar is prevented and the open time, water retentivity, and workability of the cement mortar are improved, and to a method of manufacturing the cement mortar additive.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 6, 2022
    Applicant: LOTTE FINE CHEMICAL CO., LTD.
    Inventors: Hyun Ji Jeong, Bong Jin Kwon, Ji Eun Ju
  • ADDITIVE COMPOSITION FOR TILE CEMENT MORTAR AND TILE CEMENT MORTAR COMPRISING SAME
    Publication number: 20200290934
    Abstract: Provided are an additive composition for a tile cement mortar and a tile cement mortar including the additive composition for a tile cement mortar. The provided additive composition for a tile cement mortar includes cellulose ether and urea, wherein the amount of the urea is from 5 parts by weight to 43 parts by weight based on 100 parts by weight of the cellulose ether.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 17, 2020
    Applicant: LOTTE FINE CHEMICAL CO., LTD.
    Inventors: Yun Na Kim, Nak Woon Choi, Bong Jin Kwon, Min Seok Kang, Hyun Ji Jeong