Patents by Inventor Sung Kyoun Yoon
Sung Kyoun Yoon 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: 20200308392Abstract: The present disclosure relates to a composition for a worm wheel having excellent durability and moisture absorption resistance and a worm wheel manufactured using the same. In one embodiment, the composition for a worm wheel includes about 30 wt % to about 70 wt % of a polyketone copolymer and about 30 wt % to about 70 wt % of a polyamide resin, and the composition for a worm wheel has a friction coefficient of about 0.3 or less as measured in accordance with JIS K7218, an abrasion loss of about 0.002 g or less as measured in accordance with JIS K7218, and a moisture absorption rate of about 4% or less as measured in accordance with ASTM D570 (23° C. and 50 RH %).Type: ApplicationFiled: March 26, 2020Publication date: October 1, 2020Inventors: Jin Won LEE, Yeong Ah CHEON, Woo Jeong OH, Seong Hwan KIM, Sung Kyoun YOON, Joong In KIM, Soo Ho SUNG, Jae Woo PARK
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Publication number: 20180162996Abstract: The present invention relates to a polyketone resin composition which is prepared from a polyketone co-polymer comprising repeating units represented by general formulae (1) and (2) below and exhibits excellent wear resistance and impact resistance, and thus can be used for gears, microwave containers, cams, helmet gears for electric welding, plastic boards, yarn guides, bedding cleaner cams, office supplies, window drums for automobiles, sun visor retainers, door frame inner covers for automobiles, safety belt jointers for automobiles, auto gear slides for automobiles, door latch housings for automobiles, slide guides for automobiles, switch shafts in heating, ventilation and air conditioning (HAVC) systems for automobiles, actuator gears for automobiles, trim mounting clips for automobiles, cup holders for automobiles, roof racks for automobiles, outside door handles for automobiles, air intake garnishes for automobiles, medical transportation trays, medical pipettes, refrigerator door closures, cellular phType: ApplicationFiled: October 19, 2015Publication date: June 14, 2018Applicant: HYOSUNG CORPORATIONInventors: Jong In CHOI, Sung Kyoun YOON, Ka Young KIM, Seong Hwan KIM, Jong LEE
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Publication number: 20170313820Abstract: The present invention relates to a polyketone copolymer consisting of repeating units represented by general formulae (3) and (4) below, and a mixture composition thereof. The present invention has excellent has barrier properties and thus can be used for vehicle fuel tanks, vehicle hydrogen tank liners, sealed food containers, etc. —(CH2CH2—CO)x—??(3) —(CH2CH(CH3)—CO)y—??(4) (wherein x and y denote the mol % of each of the general formulae (3) and (4) in a polymer).Type: ApplicationFiled: October 16, 2015Publication date: November 2, 2017Applicant: HYOSUNG CORPORATIONInventors: Jong In CHOI, Sung Kyoun YOON
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Publication number: 20170166743Abstract: The present invention relates to a polyketone resin composition and a method for manufacturing the same. The polyketone resin composition is prepared by mixing a polyketone terpolymer consisting of repeating units, represented by the following general formulas (1) and (2), with ABS, a glass fiber, a sulfonamide-based plasticizer and a mineral filler, and is applicable to various industrial fields requiring oil resistance, calcium chloride resistance, impact resistance, etc.Type: ApplicationFiled: July 20, 2015Publication date: June 15, 2017Applicant: HYOSUNG CORPORATIONInventors: Sung Kyoun YOON, Jong LEE, Jong In CHOI, Kyung Tae CHO, Jong Chul HONG, Ka Young KIM
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Publication number: 20170158851Abstract: The present invention relates to a polyketone resin composition and to a production method therefor; and relates to a polyketone copolymer having outstanding water resistance, moisture-absorption rate and shock resistance, characterised in that the polyketone copolymer comprises repeat units represented by general formulae (1) and (2) and has an intrinsic viscosity of between 1.0 and 2.0 dl/g. Because of the outstanding moisture-absorption rate and shock resistance, the present invention can be used in, inter alia, marine bolts, clips and holders, connectors, switches, bobbins, sludge-treatment chains, cable ties, automotive fuel injection ports, green juicer screws, office partition frames and box frames.Type: ApplicationFiled: July 20, 2015Publication date: June 8, 2017Applicant: HYOSUNG CORPORATIONInventors: Jong In CHOI, Kyung Tae CHO, Sung Kyoun YOON, Seong Hwan KIM, Jong LEE, Ka Young KIM, Seung Jo BAEK
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Publication number: 20150166782Abstract: A polyketone composite composition is provided that includes polyketone, nylon 6, kaolin, a glass bubble, and tricalcium phosphate. The polyketone composite composition has substantially low specific gravity, and improved physical properties such as high mechanical strength, chemical resistance, gas barrier property, wear resistance, high toughness, and impact resistance, and price competitiveness, and thus may be extensively applied to interior and exterior parts of vehicles, home appliances, and the like.Type: ApplicationFiled: June 24, 2014Publication date: June 18, 2015Inventors: Choon Soo Lee, Seok Hwan Kim, Jong Hwal Kim, Sung Kyoun Yoon, Ka Young Kim, Dong Wook Kim
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Patent number: 8497333Abstract: Disclosed is a polylactic acid composition with improved heat-resistance and improved impact-resistance. Specifically, in the disclosed polylactic acid composition, both impact strength and heat-resistance are improved by mixing 30 to 80 wt % of polyketone and 10 to 40 wt % of modified rubber. The disclosed polylactic acid composition does not only exhibit excellent in heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance, etc., but also has improved impact-resistance and improved heat resistance. Thus, it is possible to employ polylactic acid as a bioplastic in interior/exterior parts of a vehicle.Type: GrantFiled: November 14, 2011Date of Patent: July 30, 2013Assignees: Hyundai Motor Company, Hyosung Corporation, Desco Co., Ltd.Inventors: Choon Soo Lee, Min Hee Lee, Bong Hyun Park, Jong Hwal Kim, Sung Kyoun Yoon, Byoung Gook Kang, Keun Kyu Lee, Jong Lee
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Publication number: 20130066015Abstract: Disclosed is a polylactic acid composition with improved heat-resistance and improved impact-resistance. Specifically, in the disclosed polylactic acid composition, both impact strength and heat-resistance are improved by mixing 30 to 80 wt % of polyketone and 10 to 40 wt % of modified rubber. The disclosed polylactic acid composition does not only exhibit excellent in heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance, etc., but also has improved impact-resistance and improved heat resistance. Thus, it is possible to employ polylactic acid as a bioplastic in interior/exterior parts of a vehicle.Type: ApplicationFiled: November 14, 2011Publication date: March 14, 2013Applicants: HYUNDAI MOTOR COMPANY, DESCO CO., LTD., HYOSUNG CORPORATIONInventors: Choon Soo Lee, Min Hee Lee, Bong Hyun Park, Jong Hwal Kim, Sung Kyoun Yoon, Byoung Gook Kang, Keun Kyu Lee, Jong Lee
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Patent number: 8378023Abstract: The present invention provides a polyketone composition having about 40˜90 wt % of polyketone, about 5˜40 wt % of polyamide, and about 5˜20 wt % of modified rubber. The composition of the present invention greatly improves the impact resistance of polyketone, which has increased heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance or the like, and thus may be widely applied in various industrial fields, such as automotive parts including wheel covers, wheel caps, fuel filler necks, fuel tanks, fuel tubes, center fascias, door handles, roof rack covers, gear, junction boxes, connectors, seat backs or the like, electric/electronic parts, and household items, thereby providing durability of the parts and price competition.Type: GrantFiled: June 30, 2011Date of Patent: February 19, 2013Assignees: Hyundai Motor Company, Desco Co., Ltd., Hyosung CorporationInventors: Choon Soo Lee, Min Hee Lee, Bong Hyun Park, Seong Hoon Lee, Jong Hwal Kim, Sung Kyoun Yoon, Byoung Gook Kang
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Publication number: 20120271001Abstract: The present invention provides a polyketone composition having about 40˜90 wt % of polyketone, about 5˜40 wt % of polyamide, and about 5˜20 wt % of modified rubber. The composition of the present invention greatly improves the impact resistance of polyketone, which has increased heat resistance, chemical resistance, fuel permeation resistance, abrasion resistance or the like, and thus may be widely applied in various industrial fields, such as automotive parts including wheel covers, wheel caps, fuel filler necks, fuel tanks, fuel tubes, center fascias, door handles, roof rack covers, gear, junction boxes, connectors, seat backs or the like, electric/electronic parts, and household items, thereby providing durability of the parts and price competition.Type: ApplicationFiled: June 30, 2011Publication date: October 25, 2012Applicants: Hyundai Motor Company, Hyosung Corporation, Desco Co., Ltd.Inventors: Choon Soo Lee, Min Hee Lee, Bong Hyun Park, Seong Hoon Lee, Jong Hwal Kim, Sung Kyoun Yoon, Byoung Gook Kang