Patents by Inventor Cheon Seok YANG

Cheon Seok YANG 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: 11661505
    Abstract: A thermoplastic resin composition of the present invention is characterized by including: about 100 parts by weight of a polyolefin resin; about 10-80 parts by weight of a flame retardant other than sodium phosphate; about 1-25 parts by weight of zinc oxide having an average particle size of about 0.2-3 ?m and a specific surface area BET of about 1-10 m2/g; and about 1-50 parts by weight of sodium phosphate. The thermoplastic resin composition has excellent antibacterial properties, flame retardant properties, chemical-resistant antibacterial properties, and the like.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 30, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Jee Kwon Park, Cheon Seok Yang, Hyeon Mun Jeong, Ju Sung Kim, Jin Seong Lee
  • Patent number: 11518874
    Abstract: A thermoplastic resin composition of the present invention is characterized by comprising: a thermoplastic resin containing a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin; zinc oxide; zinc phosphate; a surface-coated zinc oxide, of which a portion or the entirety of a surface is coated with zinc phosphate. The thermoplastic resin composition has excellent acid resistance and antibacterial properties.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: December 6, 2022
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Cheon Seok Yang, Seung Yong Bae, Yoen Kyoung Kim, Ju Sung Kim, Kang Yeol Park
  • Patent number: 11518875
    Abstract: A thermoplastic resin composition according to the present invention comprises: a rubber-modified aromatic vinyl-based copolymer resin; an aliphatic polyamide resin; a poly(ether ester amide) block copolymer; a modified polyolefin resin; and a heat resistant vinyl-based copolymer resin. The thermoplastic resin composition exhibits excellent anti-static properties, heat resistance and mechanical properties.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: December 6, 2022
    Assignee: Lotte Chemical Corporation
    Inventors: In Sik Sim, Yoen Kyoung Kim, Cheon Seok Yang, Ju Sung Kim, Seung Yong Bae
  • Patent number: 11274201
    Abstract: A thermoplastic resin composition of the present invention comprises a rubber-modified vinyl-based graft copolymer, a first aromatic vinyl-based copolymer, a second aromatic vinyl-based copolymer, and a polyalkylene glycol, wherein the first aromatic vinyl-based copolymer is a copolymer of methyl methacrylate, methyl acrylate, an aromatic vinyl-based monomer, and a monomer copolymerizable with the aromatic vinyl-based monomer, the second aromatic vinyl-based copolymer is a copolymer of an aromatic vinyl-based monomer and a monomer copolymerizable with the aromatic vinyl-based monomer, and the weight ratio of methyl methacrylate to methyl acrylate, in the first aromatic vinyl-based copolymer, is approximately 1:0.01 to approximately 1:0.2. The thermoplastic resin composition has excellent discoloration resistance, color, transparency, and the like even after irradiation with ionizing radiation.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: March 15, 2022
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yoen Kyoung Kim, Cheon Seok Yang, Byeong Yeol Kim, Seung Yong Bae, Bong Jae Jeong, Ju Sung Kim
  • Publication number: 20210371654
    Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a thermoplastic resin containing at least one of a polyamide resin and a polyester resin; and about 1 to about 5 parts by weight of zinc oxide, wherein the zinc oxide has an average particle size (D50), as measured by a particle analyzer, of about 0.8 to about 3 ?m, and wherein the intensity ratio (B/A) of peak A in a region of 370-390 nm and peak B in a range of 450-600 nm, at the time of photoluminescence measurement, is about 0.01 to about 1.0. The thermoplastic resin composition is excellent in weather resistance, antibacterial properties, mechanical properties, and the like.
    Type: Application
    Filed: December 18, 2018
    Publication date: December 2, 2021
    Inventors: Seung Yong BAE, Yoen Kyoung KIM, Ju Sung KIM, Cheon Seok YANG
  • Publication number: 20210340366
    Abstract: A thermoplastic resin composition of the present invention is characterized by including: about 100 parts by weight of a polyolefin resin; about 10-80 parts by weight of a flame retardant other than sodium phosphate; about 1-25 parts by weight of zinc oxide having an average particle size of about 0.2-3 ?m and a specific surface area BET of about 1-10 m2/g; and about 1-50 parts by weight of sodium phosphate. The thermoplastic resin composition has excellent antibacterial properties, flame retardant properties, chemical-resistant antibacterial properties, and the like.
    Type: Application
    Filed: December 5, 2019
    Publication date: November 4, 2021
    Inventors: Jee Kwon PARK, Cheon Seok YANG, Hyeon Mun JEONG, Ju Sung KIM, Jin Seong LEE
  • Publication number: 20210277220
    Abstract: A thermoplastic resin composition of the present invention comprises a rubber-modified vinyl-based graft copolymer, a first aromatic vinyl-based copolymer, a second aromatic vinyl-based copolymer, and a polyalkylene glycol, wherein the first aromatic vinyl-based copolymer is a copolymer of methyl methacrylate, methyl acrylate, an aromatic vinyl-based monomer, and a monomer copolymerizable with the aromatic vinyl-based monomer, the second aromatic vinyl-based copolymer is a copolymer of an aromatic vinyl-based monomer and a monomer copolymerizable with the aromatic vinyl-based monomer, and the weight ratio of methyl methacrylate to methyl acrylate, in the first aromatic vinyl-based copolymer, is approximately 1:0.01 to approximately 1:0.2. The thermoplastic resin composition has excellent discoloration resistance, color, transparency, and the like even after irradiation with ionizing radiation.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 9, 2021
    Inventors: Yoen Kyoung KIM, Cheon Seok YANG, Byeong Yeol KIM, Seung Yong BAE, Bong Jae JEONG, Ju Sung KIM
  • Publication number: 20210147671
    Abstract: A thermoplastic resin composition of the present invention is characterized by comprising: a thermoplastic resin containing a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin; zinc oxide; zinc phosphate; a surface-coated zinc oxide, of which a portion or the entirety of a surface is coated with zinc phosphate. The thermoplastic resin composition has excellent acid resistance and antibacterial properties.
    Type: Application
    Filed: June 14, 2018
    Publication date: May 20, 2021
    Inventors: Cheon Seok YANG, Seung Yong BAE, Yoen Kyoung KIM, Ju Sung KIM, Kang Yeol PARK
  • Publication number: 20210017371
    Abstract: A thermoplastic resin composition of the present invention is characterized by comprising: a thermoplastic resin containing a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin; a polyalkylene glycol; zinc oxide having an average particle size of about 0.5 to about 3 ?m and a specific surface area BET of about 1 to about 10 m2/g; and zinc phosphate. The thermoplastic resin composition and a molded article formed therefrom have excellent discoloration resistance, antibacterial properties, and acid resistance, even after exposure to ionizing radiation.
    Type: Application
    Filed: June 12, 2018
    Publication date: January 21, 2021
    Applicant: Lotte Chemical Corporation
    Inventors: Cheon Seok YANG, Yoen Kyoung KIM, Seung Yong BAE, Ju Sung KIM
  • Publication number: 20200354561
    Abstract: A thermoplastic resin composition according to the present invention comprises: a rubber-modified aromatic vinyl-based copolymer resin; an aliphatic polyamide resin; a poly(ether ester amide) block copolymer; a modified polyolefin resin; and a heat resistant vinyl-based copolymer resin. The thermoplastic resin composition exhibits excellent anti-static properties, heat resistance and mechanical properties.
    Type: Application
    Filed: August 14, 2018
    Publication date: November 12, 2020
    Inventors: In Sik SIM, Yoen Kyoung KIM, Cheon Seok YANG, Ju Sung KIM, Seung Yong BAE
  • Patent number: 10829628
    Abstract: A thermoplastic resin composition of the present invention is characterized by comprising: about 100 parts by weight of a thermoplastic resin containing a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin; about 10 to about 30 parts by weight of an antistatic agent; and about 0.01 to about 2 parts by weight of zinc oxide, wherein the antistatic agent comprises at least one of a polyether ester amide block copolymer, a polyalkylene glycol, and a polyamide. The thermoplastic resin composition is excellent in antibacterial properties, antistatic properties, impact resistance, and the like.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 10, 2020
    Assignee: Lotte Chemical Corporation
    Inventors: Cheon Seok Yang, Yoen Kyoung Kim, Seung Yong Bae, Ju Sung Kim
  • Patent number: 10815368
    Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: a thermoplastic resin including a rubber-modified vinyl graft copolymer and an aromatic vinyl copolymer resin; polyalkylene glycol; and zinc oxide, wherein the zinc oxide has an average particle diameter of about 0.5 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 10 m2/g. The thermoplastic resin composition and the molded article formed thereof can have good properties in terms of discoloration resistance, antibacterial activity, and the like even after being irradiated with ionizing radiation.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: October 27, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yoen Kyoung Kim, Joo Hyun Jang, Ju Sung Kim, Kyung Min Park, Dong Hyun Park, Seung Yong Bae, Cheon Seok Yang
  • Patent number: 10787532
    Abstract: A thermoplastic resin composition and a molded article manufactured using the same. The thermoplastic resin composition includes: a base resin including a poly(alkyl (meth)acrylate) resin and an aromatic vinyl copolymer; a polyether-ester-amide block copolymer; and zinc oxide having an average particle diameter of about 0.2 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 20 m2/g, wherein the aromatic vinyl copolymer is a copolymer of an alkyl (meth)acrylate, an aromatic vinyl monomer, and a monomer copolymerizable with the aromatic vinyl monomer.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 29, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yoen Kyoung Kim, Seung Yong Bae, Cheon Seok Yang, Ju Sung Kim
  • Publication number: 20200277487
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a rubber-modified aromatic vinyl copolymer resin; approximately 0.1-1 parts by weight of zinc pyrithione; and approximately 0.1-10 parts by weight of zinc oxide, wherein the average particle size (D50) of the zinc oxide, measured by a particle size analyzer, is approximately 0.5-3 ?m, and the size ratio (B/A) of peak A of the region of 370-390 nm and peak B of the region of 450-600 nm is approximately 0.01-1.0 during the measurement of photoluminescence. The thermoplastic resin composition has excellent weather resistance, antibacterial property, mechanical property and the like.
    Type: Application
    Filed: August 30, 2018
    Publication date: September 3, 2020
    Inventors: Cheon Seok YANG, Yoen Kyoung KIM, Seung Yong BAE, Ju Sung KIM, Kang Yeol PARK
  • Patent number: 10544278
    Abstract: A thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes about 100 parts by weight of a thermoplastic resin and about 0.5 to about 30 parts by weight of zinc oxide. The zinc oxide has a peak intensity ratio (B/A) of about 0.01 to less than about 0.1, where A indicates a peak in the wavelength range of 370 nm to 390 nm and B indicates a peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement. The thermoplastic resin composition can exhibit good properties in terms of deodorization, impact resistance, and the like.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: January 28, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Seung Yong Bae, Yoen Kyoung Kim, Ju Sung Kim, Kang Yeol Park, Cheon Seok Yang
  • Patent number: 10472490
    Abstract: A thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes about 100 parts by weight of a thermoplastic resin and about 0.5 to about 30 parts by weight of zinc oxide. The zinc oxide has a peak intensity ratio (B/A) of about 0.1 to about 1.0, wherein A indicates a peak in the wavelength range of 370 nm to 390 nm and B indicates a peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement. The thermoplastic resin composition can exhibit good properties in terms of weather resistance, antibacterial properties, and the like.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: November 12, 2019
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Cheon Seok Yang, Yoen Kyoung Kim, Seung Yong Bae, Ju Sung Kim
  • Publication number: 20190322854
    Abstract: A thermoplastic resin composition of the present invention is characterized by comprising: about 100 parts by weight of a thermoplastic resin containing a rubber-modified vinyl-based graft copolymer and an aromatic vinyl-based copolymer resin; about 10 to about 30 parts by weight of an antistatic agent; and about 0.01 to about 2 parts by weight of zinc oxide, wherein the antistatic agent comprises at least one of a polyether ester amide block copolymer, a polyalkylene glycol, and a polyamide. The thermoplastic resin composition is excellent in antibacterial properties, antistatic properties, impact resistance, and the like.
    Type: Application
    Filed: December 22, 2017
    Publication date: October 24, 2019
    Inventors: Cheon Seok YANG, Yoen Kyoung KIM, Seung Yong BAE, Ju Sung KIM
  • Patent number: 10023734
    Abstract: A thermoplastic resin composition includes a base resin including a rubber-modified vinyl graft copolymer and an aromatic vinyl resin, and a siloxane compound including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2, wherein the repeat unit represented by Formula 1 and the repeat unit represented by Formula 2 are present in a mole ratio of about 2: about 1 to about 4: about 1 in the siloxane compound: wherein R1 and R3 are each independently a hydrogen atom or a C1 to C5 alkyl group, R2 is a C2 to C10 alkylene group, R4 is C1 to C20 alkyl group, and Ar is a C6 to C20 aryl group.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 17, 2018
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Sung Min Ha, Young Chul Kwon, Byeong Yeol Kim, Yoen Kyoung Kim, Cheon Seok Yang
  • Publication number: 20180179314
    Abstract: A thermoplastic resin composition and a molded article manufactured using the same. The thermoplastic resin composition includes: a base resin including a poly(alkyl (meth)acrylate) resin and an aromatic vinyl copolymer; a polyether-ester-amide block copolymer; and zinc oxide having an average particle diameter of about 0.2 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 20 m2/g, wherein the aromatic vinyl copolymer is a copolymer of an alkyl (meth)acrylate, an aromatic vinyl monomer, and a monomer copolymerizable with the aromatic vinyl monomer.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 28, 2018
    Inventors: Yoen Kyoung KIM, Seung Yong BAE, Cheon Seok YANG, Ju Sung KIM
  • Publication number: 20180179373
    Abstract: A thermoplastic resin composition and a molded article formed of the same. The thermoplastic resin composition includes: a thermoplastic resin including a rubber-modified vinyl graft copolymer and an aromatic vinyl copolymer resin; polyalkylene glycol; and zinc oxide, wherein the zinc oxide has an average particle diameter of about 0.5 ?m to about 3 ?m and a BET specific surface area of about 1 m2/g to about 10 m2/g. The thermoplastic resin composition and the molded article formed thereof can have good properties in terms of discoloration resistance, antibacterial activity, and the like even after being irradiated with ionizing radiation.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 28, 2018
    Inventors: Yoen Kyoung KIM, Joo Hyun JANG, Ju Sung KIM, Kyung Min PARK, Dong Hyun PARK, Seung Yong BAE, Cheon Seok YANG