Patents by Inventor Chang-Hwan Ju

Chang-Hwan Ju 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: 20230374248
    Abstract: A waste plastic recycling process includes preparing a first solution by dissolving waste plastics in an organic solvent; adding an adsorbent to the first solution; recrystallizing plastics by adding 60 parts by weight or more of a compound having a Hansen solubility parameter (HSP) of 5 to 14 with respect to polycarbonate based on 100 parts by weight of the total weight of the first solution; and collecting the recrystallized plastics. A method for preparing recyclable plastics thereof is also provided.
    Type: Application
    Filed: June 21, 2022
    Publication date: November 23, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Gyoungsik Kim, Seog Jae Seo, Gyeongho Seon, Chang Hwan Ju, Danbi Han, Jae Hoon Choe
  • Patent number: 11180597
    Abstract: The present invention relates to a polymer composition, an optical laminate and a display device, and can provide a polymer composition capable of forming a pressure-sensitive adhesive layer which has excellent workability, durability and dimensional stability and is capable of effectively alleviating the bending phenomenon of the display, through a polymer capable of forming a physically cross-linked structure together with a chemically cross-linked structure. In addition, the present invention can provide an optical laminate comprising a cross-linked product of the polymer composition and a display device comprising the same.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: November 23, 2021
    Assignee: SHANJIN OPTOELECTRONICS (SUZHOU) CO., LTD.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sung Soo Yoon, Han Na Chi, Sang Ha Son, Su Jee Kwon, Chang Hwan Ju, Geun Ho Park, Kyung Oh Kim
  • Patent number: 11160755
    Abstract: The present application relates to an amphiphilic polymer and a method for producing the same. The present application also relates to micelles comprising the amphiphilic polymer and a method for producing the same. The amphiphilic polymer of the present application can have excellent dispersion properties while effectively encapsulating the drug.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: November 2, 2021
    Assignees: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Su Jeong Kim, Jeong Ae Yoon, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Kyung Oh Kim, Jung A Kim, Nae Gyu Kang
  • Patent number: 11034786
    Abstract: The present application relates to an amphiphilic triblock polymer and micelles comprising the amphiphilic triblock polymer. The amphiphilic triblock polymer of the present application can have excellent dispersion properties and excellent water solubility while effectively encapsulating the drug.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: June 15, 2021
    Assignees: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Kyung Oh Kim, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Jeong Ae Yoon, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Publication number: 20210163800
    Abstract: A pressure-sensitive adhesive composition, an optical laminate, a polarizing plate and a display device are provided. The pressure-sensitive adhesive composition includes a block copolymer containing a first block having a glass transition temperature of 50° C. or more and having a cross-linkable functional group, a second block having a glass transition temperature of ?10° C. or less, and an epoxysilane compound. The pressure-sensitive adhesive composition according to the present application can provide excellent durability and excellent optical characteristics with respect to the pressure-sensitive adhesive polarizing plate.
    Type: Application
    Filed: July 25, 2019
    Publication date: June 3, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Han Na Chi, Su Jeong Kim, Sang Ha Son, Chang Hwan Ju, Geun Ho Park, Seong In Jo, Sung Soo Yoon
  • Patent number: 10968372
    Abstract: A pressure-sensitive adhesive composition that improves not only durability but also bending characteristics of a polarizing plate, an optical laminate and a polarizing plate, both of which are prepared with said pressure-sensitive adhesive composition, and a display device comprising the optical laminate and the polarizing plate.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 6, 2021
    Inventors: Geun Ho Park, Sang Ha Son, Sung Soo Yoon, Han Na Chi, Su Jee Kwon, Jeong Ae Yoon, Su Jeong Kim, Chang Hwan Ju, Kyung Oh Kim
  • Patent number: 10857099
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: December 8, 2020
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A. Kim, Nae Gyu Kang
  • Patent number: 10836925
    Abstract: Provided is a hydrophilic coating composition, and more particularly, a hydrophilic coating composition including both a block copolymer and a random copolymer, each including repeating units of particular structures, wherein the hydrophilic coating composition may impart a hydrophilic property to the surface of a substrate when applied to the surface, while having excellent adhesiveness to the substrate.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: November 17, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Chang Hwan Ju, Hee Jung Choi, Jeongae Yoon, Yeong Rae Chang, Sung Soo Yoon
  • Publication number: 20200323775
    Abstract: The present application relates to an amphiphilic polymer and a method for producing the same. The present application also relates to micelles comprising the amphiphilic polymer and a method for producing the same. The amphiphilic polymer of the present application can have excellent dispersion properties while effectively encapsulating the drug.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 15, 2020
    Inventors: Su Jeong KIM, Jeong Ae YOON, Sun Hwa LEE, Woo Sun SHIM, Sung Soo YOON, Chang Hwan JU, Kyung Oh KIM, Jung A KIM, Nae Gyu KANG
  • Publication number: 20200317845
    Abstract: The present application relates to an amphiphilic triblock polymer and micelles comprising the amphiphilic triblock polymer. The amphiphilic triblock polymer of the present application can have excellent dispersion properties and excellent water solubility while effectively encapsulating the drug.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 8, 2020
    Inventors: Kyung Oh KIM, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Jeong Ae Yoon, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Publication number: 20200010600
    Abstract: The present invention relates to a polymer composition, an optical laminate and a display device, and can provide a polymer composition capable of forming a pressure-sensitive adhesive layer which has excellent workability, durability and dimensional stability and is capable of effectively alleviating the bending phenomenon of the display, through a polymer capable of forming a physically cross-linked structure together with a chemically cross-linked structure. In addition, the present invention can provide an optical laminate comprising a cross-linked product of the polymer composition and a display device comprising the same.
    Type: Application
    Filed: September 7, 2017
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sung Soo Yoon, Han Na Chi, Sang Ha Son, Su Jee Kwon, Chang Hwan Ju, Geun Ho Park, Kyung Oh Kim
  • Publication number: 20190315996
    Abstract: Provided is a hydrophilic coating composition, and more particularly, a hydrophilic coating composition including both a block copolymer and a random copolymer, each including repeating units of particular structures, wherein the hydrophilic coating composition may impart a hydrophilic property to the surface of a substrate when applied to the surface, while having excellent adhesiveness to the substrate.
    Type: Application
    Filed: December 26, 2017
    Publication date: October 17, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Chang Hwan JU, Hee Jung CHOI, Jeongae YOON, Yeong Rae CHANG, Sung Soo YOON
  • Publication number: 20190264077
    Abstract: A pressure-sensitive adhesive composition that improves not only durability but also bending characteristics of a polarizing plate, an optical laminate and a polarizing plate, both of which are prepared with said pressure-sensitive adhesive composition, and a display device comprising the optical laminate and the polarizing plate.
    Type: Application
    Filed: September 22, 2017
    Publication date: August 29, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Geun Ho Park, Sang Ha Son, Sung Soo Yoon, Han Na Chi, Su Jee Kwon, Jeong Ae Yoon, Su Jeong Kim, Chang Hwan Ju, Kyung Oh Kim
  • Publication number: 20190254970
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 22, 2019
    Applicants: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A. Kim, Nae Gyu Kang
  • Patent number: 10328024
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 25, 2019
    Assignees: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Patent number: 10251819
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: April 9, 2019
    Assignees: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Patent number: 10143651
    Abstract: The present application relates to a micelle comprising a drug encapsulated by an amphiphilic polymer and a composition comprising the same. The micelle of the present application has an excellent dispersion property on an aqueous solution and a superior percutaneous absorption characteristic on preparing a formulation.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 4, 2018
    Assignees: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Su Jeong Kim, Jeong Ae Yoon, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Publication number: 20170360703
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Application
    Filed: September 23, 2016
    Publication date: December 21, 2017
    Applicants: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Publication number: 20170354576
    Abstract: The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.
    Type: Application
    Filed: September 23, 2016
    Publication date: December 14, 2017
    Applicants: LG Chem, Ltd., LG Household & Health Care Ltd.
    Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A Kim, Nae Gyu Kang
  • Patent number: 9776591
    Abstract: The invention relates to an actuator subassembly for a vehicle safety system having a pin release actuator unit and a cradle bracket for holding the actuator unit and attaching to an airbag module. Further the invention relates to an airbag module with said actuator subassembly and a method of mounting a releasable tether on an airbag module by means of said actuator subassembly.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: October 3, 2017
    Assignee: Key Safety Systems, Inc.
    Inventors: Dong Sik Jeong, Chang-Hwan Ju, Bryan Thomas, Ho-Won Lee, K. S. Lee, Jae-Ik Hwang