Patents by Inventor Nak-Kyu SONG

Nak-Kyu SONG 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).

  • Olefin Polymer And Method For Preparing Same
    Publication number: 20200123357
    Abstract: In the present invention, there is provided an olefin polymer which has excellent processability and dimensional stability and thus is useful for hollow molding of pipes or the like.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 23, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Joong Soo Kim, Eun Kyoung Song, Nak-Kyu Song, Dae Sik Hong, Si Yong Kim, Eun Young Shin, Young Suk You, Yoon Ki Hong
  • Polyolefin pellet for preparing fiber and fiber comprising the same
    Patent number: 10570532
    Abstract: The present invention relates to a polyolefin pellet for preparing a fiber, and a fiber comprising the same. According to the present invention, provided is a polyolefin, which exhibits a high molecular weight range and a narrow molecular weight distribution and in which the formation of a gel deteriorating the quality of a fiber is reduced. Therefore, by using the polyolefin pellet, the present invention exhibits a molecular weight, a density and a narrow molecular weight distribution, which are equivalent to those of conventional polyolefin, but has high tenacity and an excellent drawing characteristic and can be highly oriented because gel formation is reduced, and therefore, the present invention can be applied to various industrial products due to a high draw ratio and crystallinity during a multifilament operation using the same.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: February 25, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jong Yong Bae, Nak-Kyu Song, In Gyu Park, Yi Young Choi
  • POLYOLEFIN PELLET FOR PREPARING FIBER AND FIBER COMPRISING THE SAME
    Publication number: 20170298538
    Abstract: The present invention relates to a polyolefin pellet for preparing a fiber, and a fiber comprising the same. According to the present invention, provided is a polyolefin, which exhibits a high molecular weight range and a narrow molecular weight distribution and in which the formation of a gel deteriorating the quality of a fiber is reduced. Therefore, by using the polyolefin pellet, the present invention exhibits a molecular weight, a density and a narrow molecular weight distribution, which are equivalent to those of conventional polyolefin, but has high tenacity and an excellent drawing characteristic and can be highly oriented because gel formation is reduced, and therefore, the present invention can be applied to various industrial products due to a high draw ratio and crystallinity during a multifilament operation using the same.
    Type: Application
    Filed: December 10, 2015
    Publication date: October 19, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Jong Young BAE, Nak-Kyu SONG, In Gyu PARK, Yi Young CHOI
  • Ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility and environmetal stress crack resistance
    Patent number: 9732172
    Abstract: The present invention relates to an ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility. The ethylene/1-hexene or ethylene/1-butene copolymer according to the present invention has high molecular weight and wide molecular weight distribution, and thus excellent processibility, and has excellent environmental stress crack resistance, and thus, may be applied for a high inner pressure heating pipe, a mining pipe, or a large-diameter pipe, and the like.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Joong Soo Kim, Hyuck Ju Kwon, Yi Young Choi, Ki Soo Lee, Eun Kyoung Song, Nak-Kyu Song, Dae Sik Hong, Woo Ri Kim, Si Yong Kim
  • ETHYLENE/1-HEXENE OR ETHYLENE/1-BUTENE COPOLYMER HAVING EXCELLENT PROCESSIBILITY AND ENVIRONMETAL STRESS CRACK RESISTANCE (AS AMENDED)
    Publication number: 20160280822
    Abstract: The present invention relates to an ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility. The ethylene/1-hexene or ethylene/1-butene copolymer according to the present invention has high molecular weight and wide molecular weight distribution, and thus excellent processibility, and has excellent environmental stress crack resistance, and thus, may be applied for a high inner pressure heating pipe, a mining pipe, or a large-diameter pipe, and the like.
    Type: Application
    Filed: October 13, 2015
    Publication date: September 29, 2016
    Inventors: Joong Soo KIM, Hyuck Ju KWON, Yi Young CHOI, Ki Soo LEE, Eun Kyoung SONG, Nak-Kyu SONG, Dae Sik HONG, Woo Ri KIM, Si Yong KIM