Patents by Inventor Lan Hua Piao

Lan Hua Piao 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).

  • Transition metal compound for olefin polymerization catalyst, olefin polymerization catalyst including same, and polyolefin polymerized by using olefin polymerization catalyst
    Patent number: 11384108
    Abstract: The present invention relates to a transition metal compound for an olefin polymerization catalyst, represented by chemical formula 1. The description of chemical formula 1 is as described in the specification.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 12, 2022
    Assignee: Hanwha Solutions Corporation
    Inventors: Lan Hua Piao, Hee Ju Yang, Na Young Park, Seong Yeon Park, Wook Jeong
  • Transition metal compound for olefin polymerization catalyst, and olefin polymerization catalyst including same
    Patent number: 11254759
    Abstract: The present invention relates to a transition metal compound for an olefin polymerization catalyst, the transition metal compound being represented by chemical formula 1. The description of chemical formula 1 is as defined in the specification.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: February 22, 2022
    Assignee: Hanwha Solutions Corporation
    Inventors: Na Young Park, Hyung Seung Lee, Lan Hua Piao, Seong Yeon Park, Wook Jeong
  • Hybrid supported metallogen catalyst, method for preparing olefin polymer by using same, and olefin polymer having improved melt strength
    Patent number: 10934370
    Abstract: The invention relates to: a hybrid supported metallocene catalyst includes at least one first metallocene compound among the compounds represented by chemical formula 1, at least one second metallocene compound among the compounds represented by chemical formula 2 and a cocatalyst compound; a method for preparing an ethylene-?-olefin copolymer, comprising polymerizing olefin monomers in the presence thereof; and an ethylene-?-olefin copolymer having improved melt strength.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: March 2, 2021
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Ah Ra Cho, Ah Reum Kim, Lan Hua Piao, Jun Ho Seo, Song Hee Yang, So Jung Lee, Yu Jeong Lim, Dong Wook Jeong, Seung Il Choi
  • TRANSITION METAL COMPOUND FOR OLEFIN POLYMERIZATION CATALYST, OLEFIN POLYMERIZATION CATALYST INCLUDING SAME, AND POLYOLEFIN POLYMERIZED BY USING OLEFIN POLYMERIZATION CATALYST
    Publication number: 20210017209
    Abstract: The present invention relates to a transition metal compound for an olefin polymerization catalyst, represented by chemical formula 1. The description of chemical formula 1 is as described in the specification.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 21, 2021
    Inventors: Lan Hua Piao, Hee Ju Yang, Na Young Park, Seong Yeon Park, Wook Jeong
  • TRANSITION METAL COMPOUND FOR OLEFIN POLYMERIZATION CATALYST, AND OLEFIN POLYMERIZATION CATALYST INCLUDING SAME
    Publication number: 20200392260
    Abstract: The present invention relates to a transition metal compound for an olefin polymerization catalyst, the transition metal compound being represented by chemical formula 1. The description of chemical formula 1 is as defined in the specification.
    Type: Application
    Filed: March 15, 2019
    Publication date: December 17, 2020
    Inventors: Na Young Park, Hyung Seung Lee, Lan Hua Piao, Seong Yeon Park, Wook Jeong
  • Metallocene compound and preparation method therefor
    Patent number: 10618924
    Abstract: A preparation method for a metallocene compound is provided. The method includes: stirring at least one compound I among compounds expressed by the following chemical formula (I) and a hydrogenation reaction catalyst of 0.10 to 0.55 parts by weight based on 100 parts by weight of the compound I under a hydrogen atmosphere; and obtaining a metallocene compound containing at least one first compound among the compounds expressed by the following chemical formula (1). Chemical formula (I) and (1) are provided in the specification.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 14, 2020
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Lan Hua Piao, Sung Hae Jun, Hyun Seung Lee, Dong Wook Jeong
  • HYBRID SUPPORTED METALLOCEN CATALYST, METHOD FOR PREPARING OLEFIN POLYMER BY USING SAME, AND OLEFIN POLYMER HAVING IMPROVED MELT STRENGTH
    Publication number: 20190023816
    Abstract: The invention relates to: a hybrid supported metallocene catalyst includes at least one first metallocene compound among the compounds represented by chemical formula 1, at least one second metallocene compound among the compounds represented by chemical formula 2 and a cocatalyst compound; a method for preparing an ethylene-?-olefin copolymer, comprising polymerizing olefin monomers in the presence thereof; and an ethylene-?-olefin copolymer having improved melt strength.
    Type: Application
    Filed: March 29, 2016
    Publication date: January 24, 2019
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Ah Ra Cho, Ah Reum Kim, Lan Hua Piao, Jun Ho Seo, Song Hee Yang, So Jung Lee, Yu Jeong Lim, Dong Wook Jeong, Seung Il Choi
  • METALLOCENE COMPOUND AND PREPARATION METHOD THEREFOR
    Publication number: 20180201638
    Abstract: A preparation method for a metallocene compound is provided. The method includes: stirring at least one compound I among compounds expressed by the following chemical formula (I) and a hydrogenation reaction catalyst of 0.10 to 0.55 parts by weight based on 100 parts by weight of the compound I under a hydrogen atmosphere; and obtaining a metallocene compound containing at least one first compound among the compounds expressed by the following chemical formula (1). Chemical formula (I) and (1) are provided in the specification.
    Type: Application
    Filed: February 18, 2016
    Publication date: July 19, 2018
    Inventors: Lan Hua Piao, Sung Hae Jun, Hyun Seung Lee, Dong Wook Jeong