Patents by Inventor Yong-Yeon Hwang

Yong-Yeon Hwang 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).

  • Patent number: 10523399
    Abstract: A method for transmitting multimedia data delivery characteristics information by a multimedia data transmission apparatus in a multimedia communication system is provided. The method includes transmitting, to a multimedia data reception apparatus, an element indicating whether multimedia data delivery characteristics information denoting information related to a Quality of Service (QoS) for multimedia data is included, and the multimedia data delivery characteristics information if the element indicates that the multimedia data delivery characteristics information is included.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: December 31, 2019
    Assignees: Samsung Electronics Co., Ltd., University-Industry Cooperation Group of Kyung Hee University
    Inventors: Kyung-Mo Park, Doug-Young Suh, Sung-Ryeul Rhyu, Sung-Oh Hwang, Yong-Hun Lee, Jae-Yeon Song
  • Publication number: 20190382574
    Abstract: A thermoplastic resin composition with low gloss and improved colorability, pencil hardness and wear resistance has (A) 5 to 35% by weight of a first graft copolymer having an average particle diameter of 50 to 150 nm and containing acrylate rubber as a core; (B) 10 to 40% by weight of a second graft copolymer having an average particle diameter of more than 150 nm and 800 nm or less and containing acrylate rubber as a core; (C) 5 to 15% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer having a weight average molecular weight of 70,000 to 130,000 g/mol; (D) 20 to 50% by weight of an aromatic vinyl compound-(meth)acrylate compound copolymer having a weight average molecular weight of 65,000 to 100,000 g/mol; and (E) 0.1 to 7% by weight of a syndiotactic polystyrene resin.
    Type: Application
    Filed: November 1, 2017
    Publication date: December 19, 2019
    Inventors: Yong Hee AN, Yong Yeon HWANG, Hyun Taek OH, Bong Keun AHN, Min Jung KIM, Chun Ho PARK, Eun Soo KANG, Jang Won PARK
  • Patent number: 10487204
    Abstract: The present invention relates to a method of preparing an ASA graft copolymer, a method of preparing a thermoplastic ASA resin composition including the same, and a method of preparing an ASA molded part, and more particularly, to a method of preparing a multilayered ASA graft copolymer including a step of preparing seeds, cores, and shells. According to the method, since a multifunctional carboxylic acid having 20 or more carbon atoms or a salt thereof is introduced as an emulsifier, the content of the emulsifier remaining in a resin may be reduced, thereby providing an ASA resin having excellent thermal stability and appearance characteristics while the inherent physical properties thereof, such as impact resistance and weather resistance, are maintained.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: November 26, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Bong Keun Ahn, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Chun Ho Park, Eun Soo Kang, Yong Hee An, Jang Won Park
  • Patent number: 10481461
    Abstract: Provided is a reversible electrochemical mirror including a first substrate and a second substrate, which face each other, a first transparent electrode disposed on the first substrate and facing the second substrate, a second transparent electrode disposed on the second substrate and facing the first transparent electrode, an electrolyte solution interposed between the first transparent electrode and the second transparent electrode, and a counter electrode material layer disposed on the second transparent electrode and contacting the electrolyte solution.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 19, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-Mok Cho, Sujung Kim, Tae-Youb Kim, Juhee Song, Chil Seong Ah, Yong Hae Kim, Joo Yeon Kim, Hojun Ryu, Jeong Ik Lee, Sang Hoon Cheon, Chi-Sun Hwang
  • Patent number: 10450453
    Abstract: The present disclosure relates to a thermoplastic graft copolymer resin, a method of preparing the same, and a thermoplastic resin composition including the same. More particularly, the present invention relates to a thermoplastic graft copolymer resin including a seed, an alkyl acrylate rubber core enclosing the seed, and a shell enclosing the rubber core, a method of preparing the same, and a thermoplastic resin composition including the same, wherein the thermoplastic graft copolymer resin has a gel content of 93% by weight or more and a swelling index of 6 to 14. In accordance with the present disclosure, a thermoplastic graft copolymer resin exhibiting excellent chemical resistance, heat resistance, and impact resistance, a method of preparing the same, and a thermoplastic resin composition including the same are provided.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 22, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Kang, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Chun Ho Park, Sang Mi Lee, Yeong Min Lee
  • Publication number: 20190300972
    Abstract: Provided are an Agathobaculum sp. strain having prophylactic or therapeutic effects on degenerative brain diseases, and use thereof. Since the intestinal microorganism Agathobaculum butyriciproducens SR79 strain of the present invention may have effects of inhibiting neuroinflammation and effects of improving movement regulation and cognitive and memory functions in animal models with degenerative brain diseases such as Parkinson's disease and Alzheimer's disease, the strain may be effectively used in foods, medicines, or feeds for preventing or treating brain diseases including Alzheimer's disease, Parkinson's disease, mild cognitive impairment, etc., and therefore, it is very useful in the relevant industries.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 3, 2019
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECH NOLOGY
    Inventors: Byoung-Chan KIM, Chul-Ho LEE, Kyoung-Shim KIM, Myung-Hee KIM, Sang Jun LEE, Dong-Ho CHANG, Doo-Sang PARK, Jung Hwan HWANG, Yong-Hoon KIM, Dong-Hee CHOI, Jung-Ran NOH, In-Bok LEE, Young-Keun CHOI, Yun-Jung SEO, Jung-Hyeon CHOI, Jun GO, Hye-Yeon PARK, Young-Kyoung RYU, Moon-Soo RHEE
  • Patent number: 10384201
    Abstract: Disclosed is a direct synthesis method of nanostructured catalyst particles on surfaces of various supports.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 20, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Namjo Jeong, Chan-Soo Kim, Eun-Jin Jwa, Ji Yeon Choi, Joo-Youn Nam, Soon-Chul Park, Moon-Seok Jang, Yong Seok Seo, Kyo Sik Hwang, Han Ki Kim, Ji Hyung Han, Tae Young Kim, Young Gi Yoon
  • Patent number: 10364344
    Abstract: The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including 10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1, and a molded article manufactured from the same. In accordance with the present disclosure, a thermoplastic resin composition that exhibits glossy effect by injection molding and matte effect by extrusion molding while providing superior mechanical strength and thus is applicable to both glossy products and matte products, and a molded article manufactured from the same are provided.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 30, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Chun Ho Park, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang
  • Patent number: 10351699
    Abstract: The present disclosure relates to a thermoplastic resin composition providing superior low-gloss characteristic, weather resistance, and mechanical properties and an extruded article manufactured from the same. More particularly, the present invention relates to a thermoplastic resin composition including 40 to 70% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer as a matrix resin; 20 to 40% by weight of an acrylic graft copolymer (a) in which 46 to 95% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 5 to 54% by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.05 to 1 ?m; 1 to 10% by weight of an acrylic graft copolymer (b) in which 5 to 45% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 55 to 95 % by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 16, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Chun Ho Park, Yong Yeon Hwang, Hyun Taek Oh, Min Jung Kim, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang
  • Patent number: 10294341
    Abstract: The present invention relates to a thermosetting resin composition for a semiconductor package and a prepreg using the same. Specifically, a thermosetting resin composition for a semiconductor package which exhibits a low curing shrinkage ratio and has a high glass transition temperature and greatly improved flowability by introducing acrylic rubber and mixing two specific inorganic fillers surface-treated with a binder of a specific composition at a certain ratio, and a prepreg using the same, are provided.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 21, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Hwa Yeon Moon, Yong Seon Hwang, Hee Yong Shim, Hyun Sung Min, Mi Seon Kim, Chang Bo Shim, Young Chan Kim, Seung Hyun Song, Won Ki Kim
  • Patent number: 10287385
    Abstract: The present invention relates to a weather-resistant thermoplastic resin, a thermoplastic resin composition containing the same, and a method of preparing the thermoplastic resin composition. More particular, the present invention relates to a thermoplastic resin including a) a hard core having a refractive index of 1.530 to 1.590; b) a crosslinked rubber layer that surrounds the hard core, has an average thickness of 30 to 80 nm, and is prepared by polymerizing an alkyl (meth)acrylate compound and a crosslinking agent; and c) a non-crosslinked hard shell that surrounds the crosslinked rubber layer and is prepared by polymerizing an aromatic vinyl compound and a vinyl cyanide compound, a thermoplastic resin composition including the thermoplastic resin, and a method of preparing the thermoplastic resin composition.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: May 14, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Hyun Taek Oh, Yong Yeon Hwang, Min Jung Kim, Chun Ho Park, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang
  • Publication number: 20190100647
    Abstract: The present invention relates to a non-halogen flame retardant resin composition. More particularly, the present invention provides a non-halogen flame retardant resin composition capable of simultaneously exhibiting superior flame retardancy, whiteness, and gloss by addressing problems of a flame retardant resin such as difficulties in realizing V-1 grade or higher flame retardancy when a non-halogen flame retardant is used and poor colorability due to low gloss and whiteness.
    Type: Application
    Filed: October 26, 2017
    Publication date: April 4, 2019
    Inventors: Je Sun YOO, Ki Young NAM, Yong Yeon HWANG, Jae Young SIM, Seon Hyeong BAE, Jae Yeon BAE, In Seok KIM
  • Publication number: 20190023893
    Abstract: The present invention relates to a thermoplastic resin composition, a method of preparing the same, and a molded part manufactured using the same. More specifically, the present invention provides a thermoplastic resin composition having excellent mechanical properties, such as tensile strength and impact strength, and weather resistance while having low gloss characteristics, a method of preparing the same, and a molded part manufactured using the same. According to the present invention, the thermoplastic resin composition includes an ASA graft copolymer having a core-shell structure having an average particle diameter of 0.05 to 1 ?m, an aromatic vinyl compound-vinyl cyanide compound copolymer, and an epoxy group-containing copolymer having a weight average molecular weight of 2,000 to 8,000 g/mol in specific amounts.
    Type: Application
    Filed: December 5, 2017
    Publication date: January 24, 2019
    Inventors: Chun Ho PARK, Yong Yeon HWANG, Hyun Taek OH, Bong Keun AHN, Min Jung KIM, Eun Soo KANG, Yong Hee AN, Jang Won PARK
  • Publication number: 20190023892
    Abstract: The present invention relates to a thermoplastic resin composition having excellent weather resistance, according to the present invention, the thermoplastic resin composition has excellent weather resistance, gloss, and impact resistance, and thus may be suitable for use as exterior materials for structures, such as siding and window frames.
    Type: Application
    Filed: November 1, 2017
    Publication date: January 24, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo KANG, Yong Yeon HWANG, Hyun Taek OH, Bong Keun AHN, Min Jung KIM, Chun Ho PARK, Yong Hee AN, Jang Won PARK
  • Publication number: 20180355161
    Abstract: The present invention relates to a method of preparing an ASA graft copolymer, a method of preparing a thermoplastic ASA resin composition including the same, and a method of preparing an ASA molded part, and more particularly, to a method of preparing a multilayered ASA graft copolymer including a step of preparing seeds, cores, and shells. According to the method, since a multifunctional carboxylic acid having 20 or more carbon atoms or a salt thereof is introduced as an emulsifier, the content of the emulsifier remaining in a resin may be reduced, thereby providing an ASA resin having excellent thermal stability and appearance characteristics while the inherent physical properties thereof, such as impact resistance and weather resistance, are maintained.
    Type: Application
    Filed: October 25, 2017
    Publication date: December 13, 2018
    Inventors: Bong Keun AHN, Yong Yeon HWANG, Hyun Taek OH, Min Jung KIM, Chun Ho PARK, Eun Soo KANG, Yong Hee AN, Jang Won PARK
  • Patent number: 10093823
    Abstract: The present invention relates to a flame retardant resin composition including (A) 100 parts by weight of a blend resin composition including a styrene copolymer and a polyester elastomer, (B) 1 to 30 parts by weight of an epoxy resin, and (C) 1 to 30 parts by weight of a phosphor-based flame retardant agent. The flame retardant resin composition has improved flame retardant properties and flexibility and is used for coating a wire and a cable.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: October 9, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Jae Young Sim, Ki Young Nam, Yong Yeon Hwang, Je Sun Yoo, Seon Hyeong Bae, Jae Yeon Bae
  • Publication number: 20180265687
    Abstract: The present disclosure relates to a thermoplastic resin composition providing superior low-gloss characteristic, weather resistance, and mechanical properties and an extruded article manufactured from the same. More particularly, the present invention relates to a thermoplastic resin composition including 40 to 70% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer as a matrix resin; 20 to 40% by weight of an acrylic graft copolymer (a) in which 46 to 95% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 5 to 54% by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.05 to 1 ?m; 1 to 10% by weight of an acrylic graft copolymer (b) in which 5 to 45% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer is grafted to 55 to 95 % by weight of a (meth)acrylate-based rubbery polymer having an average particle diameter of 0.
    Type: Application
    Filed: November 10, 2016
    Publication date: September 20, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Chun Ho PARK, Yong Yeon HWANG, Hyun Taek OH, Min Jung KIM, Sang Mi LEE, Yeong Min LEE, Eun Soo KANG
  • Patent number: 10011710
    Abstract: The present disclosure relates to a flame retardant thermoplastic resin composition having superior thermal stability, and a molded article manufactured from the same. More particularly, the present disclosure provides a flame retardant thermoplastic resin composition exhibiting both superior thermal stability and flame retardancy without harmful gas generation even when injection-molded at high temperature, high pressure, and high speed and a molded article manufactured from the same.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: July 3, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Je Sun Yoo, Ki Young Nam, Yong Yeon Hwang, Jae Young Sim, Seon Hyeong Bae, Jae Yeon Bae, In Seok Kim
  • Publication number: 20180142094
    Abstract: The present disclosure relates to a thermoplastic graft copolymer resin, a method of preparing the same, and a thermoplastic resin composition including the same. More particularly, the present invention relates to a thermoplastic graft copolymer resin including a seed, an alkyl acrylate rubber core enclosing the seed, and a shell enclosing the rubber core, a method of preparing the same, and a thermoplastic resin composition including the same, wherein the thermoplastic graft copolymer resin has a gel content of 93% by weight or more and a swelling index of 6 to 14. In accordance with the present disclosure, a thermoplastic graft copolymer resin exhibiting excellent chemical resistance, heat resistance, and impact resistance, a method of preparing the same, and a thermoplastic resin composition including the same are provided.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 24, 2018
    Inventors: Eun Soo KANG, Yong Yeon HWANG, Hyun Taek OH, Min Jung KIM, Chun Ho PARK, Sang Mi LEE, Yeong Min LEE
  • Publication number: 20170369692
    Abstract: The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including 10 to 59% by weight of an acrylic graft copolymer resin (a) having a graft efficiency of 50 to 95%; 1 to 20% by weight of an acrylic graft copolymer resin (b) having a graft efficiency of 5 to 49%; and 21 to 89% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer resin (c), wherein a weight ratio of (a):(b) is 1:1 to 10:1, and a molded article manufactured from the same. In accordance with the present disclosure, a thermoplastic resin composition that exhibits glossy effect by injection molding and matte effect by extrusion molding while providing superior mechanical strength and thus is applicable to both glossy products and matte products, and a molded article manufactured from the same are provided.
    Type: Application
    Filed: November 4, 2016
    Publication date: December 28, 2017
    Inventors: Chun Ho PARK, Yong Yeon HWANG, Hyun Taek OH, Min Jung KIM, Sang Mi LEE, Yeong Min LEE, Eun Soo KANG