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).
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Publication number: 20230374248Abstract: 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: ApplicationFiled: June 21, 2022Publication date: November 23, 2023Applicant: LG Chem, Ltd.Inventors: Gyoungsik Kim, Seog Jae Seo, Gyeongho Seon, Chang Hwan Ju, Danbi Han, Jae Hoon Choe
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Patent number: 11180597Abstract: 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: GrantFiled: September 7, 2017Date of Patent: November 23, 2021Assignee: 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
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Patent number: 11160755Abstract: 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: GrantFiled: June 16, 2017Date of Patent: November 2, 2021Assignees: 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
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Patent number: 11034786Abstract: 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: GrantFiled: June 16, 2017Date of Patent: June 15, 2021Assignees: 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
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Publication number: 20210163800Abstract: 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: ApplicationFiled: July 25, 2019Publication date: June 3, 2021Applicant: 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
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Patent number: 10968372Abstract: 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: GrantFiled: September 22, 2017Date of Patent: April 6, 2021Inventors: 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
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Patent number: 10857099Abstract: 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: GrantFiled: May 7, 2019Date of Patent: December 8, 2020Inventors: Jeong Ae Yoon, Su Jeong Kim, Sun Hwa Lee, Woo Sun Shim, Sung Soo Yoon, Chang Hwan Ju, Jung A. Kim, Nae Gyu Kang
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Patent number: 10836925Abstract: 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: GrantFiled: December 26, 2017Date of Patent: November 17, 2020Assignee: LG CHEM, LTD.Inventors: Chang Hwan Ju, Hee Jung Choi, Jeongae Yoon, Yeong Rae Chang, Sung Soo Yoon
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Publication number: 20200323775Abstract: 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: ApplicationFiled: June 16, 2017Publication date: October 15, 2020Inventors: 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
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Publication number: 20200317845Abstract: 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: ApplicationFiled: June 16, 2017Publication date: October 8, 2020Inventors: 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
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Publication number: 20200010600Abstract: 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: ApplicationFiled: September 7, 2017Publication date: January 9, 2020Applicant: 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
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Publication number: 20190315996Abstract: 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: ApplicationFiled: December 26, 2017Publication date: October 17, 2019Applicant: LG CHEM, LTD.Inventors: Chang Hwan JU, Hee Jung CHOI, Jeongae YOON, Yeong Rae CHANG, Sung Soo YOON
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Publication number: 20190264077Abstract: 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: ApplicationFiled: September 22, 2017Publication date: August 29, 2019Applicant: 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
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Publication number: 20190254970Abstract: 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: ApplicationFiled: May 7, 2019Publication date: August 22, 2019Applicants: 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
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Patent number: 10328024Abstract: 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: GrantFiled: September 23, 2016Date of Patent: June 25, 2019Assignees: 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
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Patent number: 10251819Abstract: 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: GrantFiled: September 23, 2016Date of Patent: April 9, 2019Assignees: 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
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Patent number: 10143651Abstract: 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: GrantFiled: November 18, 2016Date of Patent: December 4, 2018Assignees: 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
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Publication number: 20170360703Abstract: 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: ApplicationFiled: September 23, 2016Publication date: December 21, 2017Applicants: 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
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Publication number: 20170354576Abstract: 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: ApplicationFiled: September 23, 2016Publication date: December 14, 2017Applicants: 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
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Patent number: 9776591Abstract: 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: GrantFiled: April 14, 2016Date of Patent: October 3, 2017Assignee: Key Safety Systems, Inc.Inventors: Dong Sik Jeong, Chang-Hwan Ju, Bryan Thomas, Ho-Won Lee, K. S. Lee, Jae-Ik Hwang