Patents by Inventor Seok-Ju Choi
Seok-Ju 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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Patent number: 11939453Abstract: A plasticizer composition including a citrate-based material and an epoxidized oil, and the plasticizer composition capable of maintaining an excellent plasticization efficiency and providing an improved mechanical properties and stress resistance when compared with conventional phthalate-based plasticizer products.Type: GrantFiled: June 11, 2020Date of Patent: March 26, 2024Assignee: LG Chem, Ltd.Inventors: Hyun Kyu Kim, Seok Ho Jeong, Jeong Ju Moon, Woo Hyuk Choi
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Patent number: 11679627Abstract: A non-pneumatic tire having a block type reinforcement configuration includes: a tread unit that forms an outer portion of the tire and comes in contact with a road surface; a wheel unit that is connected to an axle; a spoke unit that is formed between the tread unit and the wheel unit; and a block type reinforcement unit that includes a block formed inside the tread unit in the circumferential direction of the tread unit, and a plurality of reinforcing members formed in the block to correspond to the shape of the block.Type: GrantFiled: November 6, 2019Date of Patent: June 20, 2023Assignee: HANKOOK TIRE & TECHNOLOGY CO., LTDInventors: Jeong Mu Heo, Chang Young Sohn, Seok Ju Choi
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Patent number: 11607911Abstract: A non-pneumatic tire includes a rim part configured to be coupled to an axle; a tread part formed in a shape of surrounding an outer side of the tire in a circumferential direction thereof and being in contact with the ground; a spoke part which is formed between the rim part and the tread part and is provided with an upper arch bodies and lower arch bodies of an arch shape to absorb impacts transmitted from the ground to the tread part; and a structural reinforcement part which is inserted into the inside of the tread part and is provided with a cord sheet member comprising a plurality of wires to perform load support and stress distribution of the spoke part.Type: GrantFiled: September 24, 2020Date of Patent: March 21, 2023Assignee: HANKOOK TIRE & TECHNOLOGY CO., LTDInventors: Sung Tae Kim, Seok Ju Choi, Jeong Heon Kim
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Patent number: 11571932Abstract: The disclosed technology generally relates to a tire and more particularly to a non-pneumatic tire. The non-pneumatic tire that has maneuverability similar to a pneumatic tire even without using air pressure, and can support the load of a vehicle and can guide performance-oriented tire deformation behavior by using a meta structure. In an aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that serves as a structural support between the rim and the tread, in which the spoke unit is formed in a meta structure in which unit structures are repeated.Type: GrantFiled: November 4, 2019Date of Patent: February 7, 2023Assignees: Hankook Tire & Technology Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Sung Hee Youn, Seok Ju Choi, Myong Joong Lee, Jeong Mu Heo, Daniel Saakes, Tek Jin Nam, Seung Ryeol Kim, Se Yeong Kim, Yea Kyung Row, Oo Sung Son, Dong Hyeok Yun, Kwang Eun Park, Gi Tae Koo, Jeong Yeon Lee
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Patent number: 11298979Abstract: The disclosed technology generally relates to a tire, and more particularly to a non-pneumatic tire that has handling performance similar to a pneumatic tire, supports the load of a vehicle and improves riding comfort by employing a parametric structure. In one aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that functions as a structural support between the rim and the tread, in which the spoke unit is formed by circularly arranging spokes. The spokes have a single closed-loop longitudinal cross-section circumscribed to the rim and around the center of the tire.Type: GrantFiled: November 4, 2019Date of Patent: April 12, 2022Assignees: Hankook Tire & Technology Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Sung Hee Youn, Seok Ju Choi, Myong Joong Lee, Jeong Mu Heo, Daniel Saakes, Tek Jin Nam, Seung Ryeol Kim, Se Yeong Kim, Yea Kyung Row, Oo Sung Son, Dong Hyeok Yun, Kwang Eun Park, Gi Tae Koo, Jeong Yeon Lee
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Publication number: 20210086568Abstract: A non-pneumatic tire includes a rim part in which an insertion groove is formed and being connected with an axle; a tread part formed in a shape of surrounding an outer side of the tire in a circumferential direction thereof and being in contact with the ground; a spoke part formed between the rim part and the tread part and provided with upper arch bodies and lower arch bodies of an arch shape to absorb impacts transmitted from the ground to the tread part; a structural reinforcement part inserted into the inside of the tread part to perform load support and stress distribution of the spoke part; a conductive structure part formed between an outer surface of the rim part and an inner surface of the tread part, and having fiber plated using a metal salt.Type: ApplicationFiled: September 23, 2020Publication date: March 25, 2021Inventors: Sung Tae KIM, Seok Ju CHOI, Ji Wan LEE, Jeong Heon KIM
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Publication number: 20210086559Abstract: A non-pneumatic tire includes a rim part configured to be coupled to an axle; a tread part formed in a shape of surrounding an outer side of the tire in a circumferential direction thereof and being in contact with the ground; a spoke part which is formed between the rim part and the tread part and is provided with an upper arch bodies and lower arch bodies of an arch shape to absorb impacts transmitted from the ground to the tread part; and a structural reinforcement part which is inserted into the inside of the tread part and is provided with a cord sheet member comprising a plurality of wires to perform load support and stress distribution of the spoke part.Type: ApplicationFiled: September 24, 2020Publication date: March 25, 2021Inventors: Sung Tae KIM, Seok Ju CHOI, Jeong Heon KIM
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Publication number: 20200324576Abstract: A non-pneumatic tire having a block type reinforcement configuration includes: a tread unit that forms an outer portion of the tire and comes in contact with a road surface; a wheel unit that is connected to an axle; a spoke unit that is formed between the tread unit and the wheel unit; and a block type reinforcement unit that includes a block formed inside the tread unit in the circumferential direction of the tread unit, and a plurality of reinforcing members formed in the block to correspond to the shape of the block.Type: ApplicationFiled: November 6, 2019Publication date: October 15, 2020Inventors: Jeong Mu HEO, Chang Young SOHN, Seok Ju CHOI
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Publication number: 20200139754Abstract: The disclosed technology generally relates to a tire, and more particularly to a non-pneumatic tire that has handling performance similar to a pneumatic tire, supports the load of a vehicle and improves riding comfort by employing a parametric structure. In one aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that functions as a structural support between the rim and the tread, in which the spoke unit is formed by circularly arranging spokes. The spokes have a single closed-loop longitudinal cross-section circumscribed to the rim and around the center of the tire.Type: ApplicationFiled: November 4, 2019Publication date: May 7, 2020Inventors: Sung Hee Youn, Seok Ju Choi, Myong Joong Lee, Jeong Mu Heo, Daniel Saakes, Tek Jin Nam, Seung Ryeol Kim, Se Yeong Kim, Yea Kyung Row, Oo Sung Son, Dong Hyeok Yun, Kwang Eun Park, Gi Tae Koo, Jeong Yeon Lee
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Publication number: 20200139763Abstract: The disclosed technology generally relates to a tire and more particularly to a non-pneumatic tire. The non-pneumatic tire that has maneuverability similar to a pneumatic tire even without using air pressure, and can support the load of a vehicle and can guide performance-oriented tire deformation behavior by using a meta structure. In an aspect, a non-pneumatic tire includes a tread that comes in contact with the ground, a rim that is connected with an axle, and a spoke unit that serves as a structural support between the rim and the tread, in which the spoke unit is formed in a meta structure in which unit structures are repeated.Type: ApplicationFiled: November 4, 2019Publication date: May 7, 2020Inventors: Sung Hee Youn, Seok Ju Choi, Myong Joong Lee, Jeong Mu Heo, Daniel Saakes, Tek Jin Nam, Seung Ryeol Kim, Se Yeong Kim, Yea Kyung Row, Oo Sung Son, Dong Hyeok Yun, Kwang Eun Park, Gi Tae Koo, Jeong Yeon Lee
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Patent number: 9387726Abstract: The present invention relates to an airless tire, and includes first and second bands that face each other with a distance interposed therebetween, a plurality of spokes that connect the first band to the second band and are provided at intervals, and first and second connecting members that connect the adjacent spokes. The spoke includes a first member of which one end is curved from the first band toward the second band, and a second member of which one end is curved from the second band toward the first band. The other ends of the first and second members are connected to each other, and the first and second members are curved in opposite directions.Type: GrantFiled: June 19, 2013Date of Patent: July 12, 2016Assignee: HANKOOK TIRE CO., LTD.Inventors: Seok Ju Choi, Hak Joo Kim, Man Seop Kim, Kil Ju Ko, Ki Ho Kang, Yoon Jin Choi
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Patent number: 9333799Abstract: Disclosed herein is a non-pneumatic tire with a reinforcing member. The non-pneumatic tire includes a tread part which comes into contact with the ground, a rim part which is coupled to an axle, an outer annular band part which forms an interface with an inner surface of the tread part, an inner annular band part which forms an interface with the rim part, a spoke part which is disposed between the outer annular band part and the inner annular band part and functions as a support, a connector which connects spokes of the spoke part to each other, and a reinforcing member which has a plate wire structure. The non-pneumatic tire can effectively and sufficiently withstand the weight of a vehicle. Further, the performance of the tire is balanced with respect to the contact area, the displacement extent and the resistance to rolling.Type: GrantFiled: July 30, 2013Date of Patent: May 10, 2016Assignee: Hankook Tire Co., Ltd.Inventors: Seok Ju Choi, Hak Joo Kim, Man Seop Kim, Kil Ju Ko, Ki Ho Kang
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Patent number: 9315611Abstract: A polyurethane foam which is obtained by a reaction between a diol component and a diisocyanate component, with the diol component being a mixture of a polyether-based diol and a polyester-based diol, and a pneumatic tire to which the polyurethane foam is applied are provided. When a soft polyurethane foam is produced using a mixture of a polyether-based diol and a polyester-based diol as the diol component, and by varying the content of the expanding agent during the production process, and when the polyurethane foam is disposed in the cavity of a pneumatic tire, the polyurethane foam thus produced has an effect of reducing the resonance noise generated in the cavity of the tire and improving durability of the tire.Type: GrantFiled: November 17, 2011Date of Patent: April 19, 2016Assignee: HANKOOK TIRE CO., LTD.Inventors: Seok-Ju Choi, Hak-Joo Kim
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Patent number: 9290053Abstract: A non-pneumatic tire for a vehicle is disclosed. The non-pneumatic tire includes a tread, a rim part, inside and outside annular bands, a spoke member, and a pair of protective films. The tread comes into contact with a road surface. The rim part is connected to the axle of a vehicle. The inside and outside annular bands are disposed between the tread and the rim part, and are coaxially spaced apart from each other. The spoke member includes supports disposed in a predetermined pattern and configured to connect the inside and outside annular bands, and openings defined by the supports. The pair of protective films are disposed at both ends of the tire in the widthwise direction of the tire, and prevents foreign substances from infiltrating into the openings of the spoke member. The protective films are made of the same material as the spoke member and integrated with the spoke member.Type: GrantFiled: October 23, 2014Date of Patent: March 22, 2016Assignee: Hankook Tire Co., Ltd.Inventors: Seok Ju Choi, Hak Joo Kim, Man Seop Kim, Kil Ju Ko, Ki Ho Kang
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Patent number: 9120351Abstract: Disclosed herein is an airless are which absorbs shock and holds pressure applied to the tire through an auxetic spoke buffer without using air pressure. The airless tire includes a cylindrical tread being in contact with the ground, an axle fixing section having a smaller circumference than the tread and disposed inside the tread, and an auxetic spoke buffer connecting the tread and the axle fixing section and providing a buffering function. Accordingly, the airless tire is transformed only to an extent to properly function as a fire when the spoke buffer is transformed by pressure or impact and fully returns to an original shape when pressure or impact is removed.Type: GrantFiled: September 8, 2011Date of Patent: September 1, 2015Assignee: Hankook Tire Co., Ltd.Inventors: Dal Yong Mun, Hak Joo Kim, Seok Ju Choi
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Publication number: 20150122382Abstract: A non-pneumatic tire for a vehicle is disclosed. The non-pneumatic tire includes a tread, a rim part, inside and outside annular bands, a spoke member, and a pair of protective films. The tread comes into contact with a road surface. The rim part is connected to the axle of a vehicle. The inside and outside annular bands are disposed between the tread and the rim part, and are coaxially spaced apart from each other. The spoke member includes supports disposed in a predetermined pattern and configured to connect the inside and outside annular bands, and openings defined by the supports. The pair of protective films are disposed at both ends of the tire in the widthwise direction of the tire, and prevents foreign substances from infiltrating into the openings of the spoke member. The protective films are made of the same material as the spoke member and integrated with the spoke member.Type: ApplicationFiled: October 23, 2014Publication date: May 7, 2015Inventors: Seok Ju CHOI, Hak Joo KIM, Man Seop KIM, Kil Ju KO, Ki Ho KANG
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Publication number: 20140238561Abstract: Disclosed herein is a non-pneumatic tire with a reinforcing member. The non-pneumatic tire includes a tread part which comes into contact with the ground, a rim part which is coupled to an axle, an outer annular band part which forms an interface with an inner surface of the tread part, an inner annular band part which forms an interface with the rim part, a spoke part which is disposed between the outer annular band part and the inner annular band part and functions as a support, a connector which connects spokes of the spoke part to each other, and a reinforcing member which has a plate wire structure. The non-pneumatic tire can effectively and sufficiently withstand the weight of a vehicle. Further, the performance of the tire is balanced with respect to the contact area, the displacement extent and the resistance to rolling.Type: ApplicationFiled: July 30, 2013Publication date: August 28, 2014Applicant: HANKOOK TIRE CO., LTD.Inventors: Seok Ju CHOI, Hak Joo KIM, Man Seop KIM, Kil Ju KO, Ki Ho KANG
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Publication number: 20140034881Abstract: The present invention relates to a carbon nanotube-radical polymer composite and to a production method therefor, and relates to a polymer composite comprising carbon nanotubes and a radical polymer; being a carbon nanotube-radical polymer composite that has outstanding electrical conductivity and transparency and can be used in permeable batteries or flexible batteries, and also relates to a production method therefor.Type: ApplicationFiled: December 12, 2011Publication date: February 6, 2014Applicant: Gwangju Institute of Science and TechnologyInventors: Kurt E. Geckeler, Hiroyuki Nishide, Seok Ju Choi, Wonsung Choi
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Publication number: 20140000777Abstract: The present invention relates to an airless tire, and includes first and second bands that face each other with a distance interposed therebetween, a plurality of spokes that connect the first band to the second band and are provided at intervals, and first and second connecting members that connect the adjacent spokes. The spoke includes a first member of which one end is curved from the first band toward the second band, and a second member of which one end is curved from the second band toward the first band. The other ends of the first and second members are connected to each other, and the first and second members are curved in opposite directions.Type: ApplicationFiled: June 19, 2013Publication date: January 2, 2014Inventors: Seok Ju CHOI, Hak Joo KIM, Man Seop KIM, Kil Ju KO, Ki Ho KANG, Yoon Jin CHOI
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Publication number: 20120136085Abstract: A polyurethane foam which is obtained by a reaction between a diol component and a diisocyanate component, with the diol component being a mixture of a polyether-based diol and a polyester-based diol, and a pneumatic tire to which the polyurethane foam is applied are provided. When a soft polyurethane foam is produced using a mixture of a polyether-based diol and a polyester-based diol as the diol component, and by varying the content of the expanding agent during the production process, and when the polyurethane foam is disposed in the cavity of a pneumatic tire, the polyurethane foam thus produced has an effect of reducing the resonance noise generated in the cavity of the tire and improving durability of the tire.Type: ApplicationFiled: November 17, 2011Publication date: May 31, 2012Applicant: Hankook Tire Co., Ltd.Inventors: Seok-Ju CHOI, Hak-Joo KIM