Patents by Inventor Byoung-Kyu Chun
Byoung-Kyu Chun 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: 20240097291Abstract: The present invention relates to a cylindrical lithium ion secondary battery which, when an upper end of a cylindrical can is clamped, can prevent deformation of a cap assembly so as to improve safety. For an example, a cylindrical lithium ion secondary battery is disclosed, the battery comprising: a cylindrical can; an electrode assembly received in the cylindrical can; and a cap assembly for sealing the cylindrical can, wherein: the cap assembly comprises a top plate having a notch formed thereon, a support plate disposed in close contact with a lower surface of the top plate and including a first through-hole formed through the center thereof, and a bottom plate electrically connected with the electrode assembly and connected to the lower surface of the top plate through the first through-hole; and the support plate has a strength greater than a strength of the top plate.Type: ApplicationFiled: November 27, 2023Publication date: March 21, 2024Inventors: Dae Kyu KIM, Sung Gwi KO, Shin Jung KIM, Byoung Min CHUN
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Patent number: 10196516Abstract: Disclosed are a copolycarbonate resin composition having improved mechanical properties such as impact resistance and chemical resistance while maintaining resin flowability, and an article including the same, where the copolycarbonate resin composition comprises a copolycarbonate resin including an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating unit having at least one siloxane bond; and a polysiloxane polymer containing a hydrocarbon-based functional group having 2 or more carbon atoms.Type: GrantFiled: December 3, 2015Date of Patent: February 5, 2019Assignee: LG CHEM, LTD.Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong, Byoung Kyu Chun, Un Ko, Ki Jae Lee, Young Wook Son
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Patent number: 10174194Abstract: Disclosed is a copolycarbonate having an aromatic polycarbonate-based first repeating unit and one or more aromatic polycarbonate-based second repeating units having siloxane bonds, where the copolycarbonate provides an improved residence heat stability, and where the second repeating unit includes a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3:Type: GrantFiled: December 2, 2015Date of Patent: January 8, 2019Assignee: LG CHEM, LTD.Inventors: Byoung Kyu Chun, Hyong Min Bahn, Young Young Hwang, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Un Ko, Young Wook Son
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Patent number: 10040937Abstract: The present invention relates to a polycarbonate resin composition and an optical molded product comprising the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color uniformity which are required for a light guide plate, and also excellent in processability. Thus, it can be effectively used as a material of the light guide plate.Type: GrantFiled: March 31, 2016Date of Patent: August 7, 2018Assignee: LG CHEM, LTD.Inventors: Hyong Min Bahn, Byoung Kyu Chun, Un Ko, Moo Ho Hong, Young Young Hwang, Min Jeong Kim, Jung Jun Park, Ki Jae Lee, Young Wook Son
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Patent number: 10030096Abstract: The present disclosure relates to a polycarbonate resin and a method of preparing the same, has an effect of providing a polycarbonate resin having superior chemical resistance and wear resistance due to application of a predetermined comonomer thereto, and a method of preparing the same.Type: GrantFiled: June 22, 2016Date of Patent: July 24, 2018Assignee: LG CHEM, LTD.Inventors: Un Ko, Hyoung Min Bahn, Byoung Kyu Chun, Jung Jun Park, Ki Jae Lee, Young Wook Son, Moo Ho Hong, Young Young Hwang, Min Jeong Kim
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Patent number: 10011716Abstract: The present invention relates to a copolycarbonate resin composition comprising a copolycarbonate in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and a UV stabilizer. Since the present copolycarbonate resin composition has excellent weather resistance, the article prepared by using this composition exhibits less deteriorated surface quality and physical properties caused by ultraviolet rays or the like when exposed to the outside.Type: GrantFiled: December 3, 2015Date of Patent: July 3, 2018Assignee: LG Chem, Ltd.Inventors: Un Ko, Hyong Min Bahn, Young Young Hwang, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Byoung Kyu Chun, Young Wook Son, Tae Yun Ko
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Patent number: 9969841Abstract: The present invention relates to a copolycarbonate and a molded article comprising the same. The copolycarbonates according to the present invention has a structure in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and has effects of improving impact strength at room temperature, impact strength at low temperature, and melt index properties.Type: GrantFiled: November 16, 2015Date of Patent: May 15, 2018Assignee: LG Chem, Ltd.Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Byoung Kyu Chun, Un Ko, Young Wook Son
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Patent number: 9868818Abstract: Disclosed is a polycarbonate composition including a polycarbonate; and a copolycarbonate, where the copolycarbonate includes: an aromatic polycarbonate-based first repeating unit; and aromatic polycatbonate-based second repeating units having siloxane bonds, which include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, where the ratio of an impact strength at room temperature and an impact strength at low-temperature (impact strength at room temperature/impact strength at low-temperature) as measured at 23° C. and ?30° C., respectively, in accordance with ASTM D256 (? inch, Notched Izod) is 1.01 to 1.Type: GrantFiled: November 16, 2015Date of Patent: January 16, 2018Assignee: LG Chem, Ltd.Inventors: Jung Jun Park, Hyong Min Bahn, Young Young Hwang, Moo Ho Hong, Ki Jae Lee, Young Wook Son, Byoung Kyu Chun, Un Ko
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Patent number: 9840585Abstract: Disclosed is a polycarbonate resin composition including 1) a copolycarbonate having a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3, and 2) a polycarbonate: copolycarbonate in the composition provides improved melting properties while maintaining the physical properties of the copolycarbonate to the maximum.Type: GrantFiled: November 16, 2015Date of Patent: December 12, 2017Assignee: LG Chem, Ltd.Inventors: Jung Jun Park, Hyong Min Bahn, Young Young Hwang, Moo Ho Hong, Ki Jae Lee, Byoung Kyu Chun, Un Ko, Young Wook Son
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Publication number: 20170283547Abstract: The present disclosure relates to a polycarbonate resin and a method of preparing the same, has an effect of providing a polycarbonate resin having superior chemical resistance and wear resistance due to application of a predetermined comonomer thereto, and a method of preparing the same.Type: ApplicationFiled: June 22, 2016Publication date: October 5, 2017Inventors: Un KO, Hyoung Min BAHN, Byoung Kyu CHUN, Jung Jun PARK, Ki Jae LEE, Young Wook SON, Moo Ho HONG, Young Young HWANG, Min Jeong KIM
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Publication number: 20170275456Abstract: The present invention relates to a copolycarbonate resin composition having improved mechanical properties such as impact resistance and chemical resistance while maintaining resin flowability, and an article including the same.Type: ApplicationFiled: December 3, 2015Publication date: September 28, 2017Inventors: Young Young HWANG, Hyong Min BAHN, Jung Jun PARK, Moo HO HONG, Byoung Kyu CHUN, Un KO, Ki Jae LEE, Young Wook SON
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Patent number: 9751979Abstract: Disclosed is a polycarbonate composition including a polycarbonate; and a copolycarbonate, where the copolycarbonate includes an aromatic polycarbonate-based first repeating unit; and aromatic polycarbonate-based second repeating units having siloxane bonds, which include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, where the copolycarbonate has a melt index (MI) of 3 to 9 g/10min as measured in accordance with ASTM D1238 (300° C., 1.2 kg conditions), and a transparency of 87 to 91% as measured in accordance with ASTM D1003 (layer thickness of 3 mm): The copolycarbonate in the composition exhibits an excellent transparency and a high spiral flow while having a high impact strength at room temperature and a low melt index.Type: GrantFiled: December 4, 2015Date of Patent: September 5, 2017Assignee: LG Chem, Ltd.Inventors: Young Wook Son, Hyong Min Bahn, Young Young Hwang, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Byoung Kyu Chun, Un Ko
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Patent number: 9745418Abstract: The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which specific siloxane compounds are introduced in the main chain of polycarbonate and thus exhibits the effects of improving impact strength at room temperature, impact strength at low-temperature and melt index.Type: GrantFiled: September 4, 2015Date of Patent: August 29, 2017Assignee: LG CHEM, LTD.Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Byoung Kyu Chun, Un Ko, Young Wook Son
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Patent number: 9745417Abstract: Disclosed is a polycarbonate composition including a polycarbonate; and a copolycarbonate, where the copolycarbonate includes an aromatic polycarbonate-based first repeating unit; and aromatic polycarbonate-based second repeating units having siloxane bonds, which include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, where the copolycarbonate has an impact strength at room temperature of 840 to 1000 J/m as measured at 23° C. in accordance with ASTM D256 (? inch, Notched Izod), and the copolycarbonate satisfies Equation 1: TS/TS0?0.80.??[Equation 1] The copolycarbonate in the composition provides an improved chemical resistance and impact strength simultaneously.Type: GrantFiled: November 16, 2015Date of Patent: August 29, 2017Assignee: LG Chem, Ltd.Inventors: Young Young Hwang, Hyong Min Bahn, Jung Jun Park, Moo Ho Hong, Ki Jae Lee, Young Wook Son, Byoung Kyu Chun, Un Ko
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Patent number: 9745466Abstract: Disclosed is a copolycarbonate including an aromatic polycarbonate-based first repeating unit; and one or more aromatic polycarbonate-based second repeating units having siloxane bonds represented by Chemical Formula 2 and Chemical Formula 3: The copolycarbonate provides improved impact strength at low-temperature and improved YI (yellow index) simultaneously.Type: GrantFiled: November 16, 2015Date of Patent: August 29, 2017Assignee: LG Chem, Ltd.Inventors: Jung Jun Park, Hyong Min Bahn, Young Young Hwang, Moo Ho Hong, Ki Jae Lee, Min Jeong Kim, Byoung Kyu Chun, Un Ko, Young Wook Son
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Patent number: 9732186Abstract: The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which specific siloxane compounds are introduced in the main chain of polycarbonate and thus exhibits the effects of improving impact strength at room temperature, impact strength at low-temperature, and melt index.Type: GrantFiled: September 4, 2015Date of Patent: August 15, 2017Assignee: LG CHEM, LTD.Inventors: Hyong Min Bahn, Moo Ho Hong, Jung Jun Park, Byoung Kyu Chun, Young Young Hwang, Min Jeong Kim, Un Ko, Ki Jae Lee
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Publication number: 20170218198Abstract: The present invention relates to a polycarbonate resin composition and an optical molded product comprising the same. The polycarbonate resin composition according to the present invention is excellent in transmittance and color uniformity which are required for a light guide plate, and also excellent in processability. Thus, it can be effectively used as a material of the light guide plate.Type: ApplicationFiled: March 31, 2016Publication date: August 3, 2017Applicant: LG CHEM, LTD.Inventors: Hyong Min BAHN, Byoung Kyu CHUN, Un KO, Moo Ho HONG, Young Young HWANG, Min Jeong KIM, Jung Jun PARK, Ki Jae LEE, Young Wook SON
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Publication number: 20170158852Abstract: The present invention relates to a copolycarbonate resin composition comprising a copolycarbonate in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and a UV stabilizer. Since the present copolycarbonate resin composition has excellent weather resistance, the article prepared by using this composition exhibits less deteriorated surface quality and physical properties caused by ultraviolet rays or the like when exposed to the outside.Type: ApplicationFiled: December 3, 2015Publication date: June 8, 2017Inventors: Un KO, Hyong Min BAHN, Young Young HWANG, Jung Jun PARK, Moo Ho HONG, Ki Jae LEE, Byoung Kyu CHUN, Young Wook SON, Tae Yun KO
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Publication number: 20170137568Abstract: The present invention relates to copolycarbonates and a molded article comprising the same. The copolycarbonate according to the present invention has a structure in which a specific siloxane compound is introduced in a main chain of the polycarbonate, and thus has characteristics of providing excellent residence heat stability.Type: ApplicationFiled: December 2, 2015Publication date: May 18, 2017Inventors: Byoung Kyu CHUN, Hyong Min BAHN, Young Young HWANG, Jung Jun PARK, Moo Ho HONG, Ki Jae LEE, Un KO, Young Wook SON
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Publication number: 20160376405Abstract: The present invention relates to copolycarbonates and a composition comprising the same. The copolycarbonate according to the present invention has a structure in which a specific siloxane compound is introduced in a main chain of the polycarbonate and thus, has characteristics of providing improved impact strength at low-temperature and improved YI (yellow index) simultaneously.Type: ApplicationFiled: November 16, 2015Publication date: December 29, 2016Applicant: LG Chem, Ltd.Inventors: Jung Jun PARK, Hyong Min BAHN, Young Young HWANG, Moo Ho HONG, Ki Jae LEE, Min Jeong KIM, Byoung Kyu CHUN, Un KO, Young Wook SON