Patents by Inventor Kyung-Man Choi
Kyung-Man Choi 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: 20240098091Abstract: Provided is a method performed by a least one computing device for a message service. The method comprises receiving a transmission request for a compound message which is a bundled message comprising a parent message and a plurality of child messages, obtaining permission information for a sender of the compound message, determining whether to allow each of the child messages to be sent based on the permission information and controlling transmission of the compound message based on the determination result.Type: ApplicationFiled: July 5, 2023Publication date: March 21, 2024Applicant: SAMSUNG SDS CO., LTD.Inventors: Myoung Kyhun CHOI, Han Eol LEE, Kyung sun KANG, Yong Kook PARK, Ki Man KIM
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Publication number: 20240077912Abstract: An electronic device and a method for manufacturing the same are provided. An electronic device includes a window including a first region parallel to a flat surface that is defined by a first direction and a second direction crossing the first direction and a second region extending from the first region and including a curved surface, a display module under the window, and an electronic module under the window and overlapping the second region, and the second region includes an edge of the window, and at least one hole is defined in the second region.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Inventors: KYUNG-MAN KIM, SUNGHOON KIM, SANGHOON KIM, MIN-HOON CHOI, SEONGJIN HWANG
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Patent number: 9179735Abstract: Disclosed are a climbing shoes outsole with good adhesive and non-slip properties and a method for manufacturing the same. More specifically, the climbing shoes outsole comprises a butyl rubber layer formed at a side of the outsole in contact with the ground, and a general-purpose rubber layer laminated on the butyl rubber layer.Type: GrantFiled: October 11, 2012Date of Patent: November 10, 2015Assignees: NANOTECHCERAMICS CO., LTD., KOREA INSTITUTE OF FOOTWEAR & LEATHER TECHNOLOGYInventors: Kyung Man Choi, Young Min Kim, Ji Eun Lee, Dong Hun Han
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Patent number: 7893133Abstract: The present invention provides an adhesion enhancer and a polymer composition containing the adhesion enhancer for enhancing the adhesion performance of polymer composition substrates to a primer. The adhesion enhancer of the present invention includes an alcohol, a phenol or another organic compound having a hydroxyl group of the alcohol or phenol and another functional group as supported by a porous material, or a master batch prepared by mixing a polymer with the above organic compound as supported on a porous material. The polymer composition substrate obtained by adding more than 0.5 part by weight of the adhesion enhancer based on 100 parts by weight of the polymer to a normal polymer composition shows good adhesion to a primer having an isocyanate group without a separate process of making a coarse surface of the substrate or an abrasion process using an organic solvent.Type: GrantFiled: August 11, 2006Date of Patent: February 22, 2011Assignees: Nanotech Ceramics Co., Ltd, Korea Institute of Footwear & Leather TechnologyInventors: Sang-Ok Jeong, Wan-Ouk Kim, Young-Kyong Lee, Kyung-Man Choi, Chang-Won Lee, Ji-Eun Lee, Young-Min Kim
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Patent number: 7189763Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/?-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: GrantFiled: June 5, 2003Date of Patent: March 13, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Patent number: 7189764Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/?-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: GrantFiled: June 5, 2003Date of Patent: March 13, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Publication number: 20070037904Abstract: The present invention provides an adhesion enhancer and a polymer composition containing the adhesion enhancer for enhancing the adhesion performance of polymer composition substrates to a primer. The adhesion enhancer of the present invention includes an alcohol, a phenol or another organic compound having a hydroxyl group of the alcohol or phenol and another functional group as supported by a porous material, or a master batch prepared by mixing a polymer with the above organic compound as supported on a porous material. The polymer composition substrate obtained by adding more than 0.5 part by weight of the adhesion enhancer based on 100 parts by weight of the polymer to a normal polymer composition shows good adhesion to a primer having an isocyanate group without a separate process of making a coarse surface of the substrate or an abrasion process using an organic solvent.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicants: NANOTECH CERAMICS CO., LTD., KOREA INSTITUTE OF FOOTWEAR & LEATHER TECHNOLOGYInventors: Sang-Ok Jeong, Wan-Ouk Kim, Young-Kyong Lee, Kyung-Man Choi, Chang-Won Lee, Ji-Eun Lee, Young-Min Kim
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Publication number: 20060205890Abstract: A polymer foam having a specific gravity of from 0.05 to 0.5 and comprising a plurality of cells defined by cell walls which constitute a polymer matrix, wherein the polymer matrix is comprised of 5 to 100 parts by weight of (A) a hydrogenated copolymer obtained by hydrogenating an unhydrogenated copolymer which contains at least one copolymer block S comprised of vinyl aromatic monomer units and conjugated diene monomer units, and 95 to 0 part by weight of (B) at least one polymer selected from the group consisting of an olefin polymer and a rubbery polymer, and wherein at least one peak of loss tangent (tan?) is observed at ?40° C. to lower than ?10° C. in a dynamic viscoelastic spectrum obtained with respect to the hydrogenated copolymer (A).Type: ApplicationFiled: April 9, 2004Publication date: September 14, 2006Inventors: Masahiro Sasagawa, Toshinori Shiraki, Chong-Sun Yoo, Jung-Sik Yoon, Kyung-Man Choi, Gi-Yong Um
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Patent number: 6720364Abstract: The elastomeric composition for preparing an olefinic elastomer crosslinked foam according to the present invention contains an ethylene/&agr;-olefin copolymer (A) having a specific density and MFR, an organic peroxide (D), a crosslinking assistant (E), a foaming agent (F), an organic metal compound (G), and as necessary, a high pressure low density polyethylene (B) having a specific MFR, and an ethylene/vinyl acetate copolymer (C) having a specific amount of vinyl acetate and a specific MFR. An olefinic elastomer crosslinked foam of the present invention can be obtained by crosslinking and foaming the above composition. Further, another olefinic elastomer crosslinked foam of the present invention can be obtained by a secondary compression of the above crosslinked foam. The footwear part of the present invention is made of these crosslinked foams.Type: GrantFiled: February 1, 2002Date of Patent: April 13, 2004Assignee: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi
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Publication number: 20030207953Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/&agr;-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: ApplicationFiled: June 5, 2003Publication date: November 6, 2003Applicant: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Publication number: 20030207952Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/&agr;-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: ApplicationFiled: June 5, 2003Publication date: November 6, 2003Applicant: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Patent number: 6617366Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/&agr;-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: GrantFiled: November 13, 2001Date of Patent: September 9, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Publication number: 20030013778Abstract: A crosslinked olefin elastomer foam has a specific gravity of 0.05 to 0.2, an expansion ratio of 8 to 15, a compression set of 30 to 60% and a tear strength of 1.5 to 2.5 kg/cm. The crosslinked foam is obtained by heating an elastomer composition comprising a specific ethylene/&agr;-olefin copolymer, an organic peroxide, a crosslinking auxiliary and a foaming agent. The crosslinked foam has a high expansion ratio, is free from surface roughening attributed to defoaming, realizes a soft touch, exhibits a low compression set and is excellent in mechanical strength (particularly tear strength) and heat resistance.Type: ApplicationFiled: November 13, 2001Publication date: January 16, 2003Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi, Kwon-Ik Lee
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Publication number: 20020143077Abstract: The elastomeric composition for preparing an olefinic elastomer crosslinked foam according to the present invention contains an ethylene/&agr;-olefin copolymer (A) having a specific density and MFR, an organic peroxide (D), a crosslinking assistant (E), a foaming agent (F), an organic metal compound (G), and as necessary, a high pressure low density polyethylene (B) having a specific MFR, and an ethylene/vinyl acetate copolymer (C) having a specific amount of vinyl acetate and a specific MFR. An olefinic elastomer crosslinked foam of the present invention can be obtained by crosslinking and foaming the above composition. Further, another olefinic elastomer crosslinked foam of the present invention can be obtained by a secondary compression of the above crosslinked foam. The footwear part of the present invention is made of these crosslinked foams.Type: ApplicationFiled: February 1, 2002Publication date: October 3, 2002Inventors: Takanori Sueda, Naoto Yasaka, Chong-Sun Yoo, Jeong-Sik Yoon, Kyung-Man Choi