Patents by Inventor Nak Woon Choi

Nak Woon 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).

  • Publication number: 20240121809
    Abstract: A method of a first terminal may include: identifying first RB set(s) to be used for SL communication among consecutive RB sets through an LBT procedure; identifying a first subchannel group included in the first RB set(s) and a second subchannel group including a first PRB in the first RB set(s), the first PRB being not included in the first subchannel group; configuring the first PRB within the second subchannel group as an SL communication resource; and transmitting, to a second terminal, control information indicating that the first PRB is configured as the SL communication resource.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 11, 2024
    Inventors: Jun Hyeong KIM, Go San NOH, Il Gyu KIM, Man Ho PARK, Nak Woon SUNG, Jae Su SONG, Nam Suk LEE, Hee Sang CHUNG, Min Suk CHOI
  • 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
  • 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
  • Patent number: 9272952
    Abstract: Disclosed are an admixture composition for a tile cement mortar and a tile cement mortar composition comprising the admixture composition. The disclosed admixture composition for a tile cement mortar comprises a cellulose ether, a polyacrylamide-based polymer coagulant and an inorganic coagulant.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Nak Woon Choi, Sung Hoon Kim, Eun Jeong Kim
  • Patent number: 8920557
    Abstract: Provided are an additive for skim coat mortar and a skim coat mortar composition including the same, and the additive is a blend of cellulose ether having hydroxyalkylalkyl cellulose cross-linked with an aldehyde compound and hydroxyalkyl cellulose cross-linked with an aldehyde compound. By applying the additive to a skim coat mortar composition, it is possible to improve workability, surface luster, and a creamy property while maintaining a water retention property.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: December 30, 2014
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: A Reum Lee, Sung Hoon Kim, Nak Woon Choi
  • Publication number: 20140231705
    Abstract: The present invention relates to an aqueous polymer composition for removing dust. The composition comprises a cellulose ether and water, and the cellulose ether can be dissolved in water to produce a dust removing cellulose ether aqueous solution which then exhibits a long-term dust removing effect due to the water-retention properties and the film forming properties of the cellulose ether.
    Type: Application
    Filed: November 9, 2012
    Publication date: August 21, 2014
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD
    Inventors: Sung Hoon Kim, Nak Woon Choi, Wook Hwan Noh
  • Publication number: 20140182486
    Abstract: Provided are an additive for skim coat mortar and a skim coat mortar composition including the same, and the additive is a blend of cellulose ether having hydroxyalkylalkyl cellulose cross-linked with an aldehyde compound and hydroxyalkyl cellulose cross-linked with an aldehyde compound. By applying the additive to a skim coat mortar composition, it is possible to improve workability, surface luster, and a creamy property while maintaining a water retention property.
    Type: Application
    Filed: November 7, 2013
    Publication date: July 3, 2014
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD
    Inventors: A Reum Lee, Sung Hoon Kim, Nak Woon Choi
  • Publication number: 20120289627
    Abstract: Disclosed are an admixture composition for a tile cement mortar and a tile cement mortar composition comprising the admixture composition. The disclosed admixture composition for a tile cement mortar comprises a cellulose ether, a polyacrylamide-based polymer coagulant and an inorganic coagulant.
    Type: Application
    Filed: January 12, 2011
    Publication date: November 15, 2012
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Nak Woon Choi, Sung Hoon Kim, Eun Jeong Kim