Patents by Inventor Tae Hak Park
Tae Hak Park 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: 9976234Abstract: The present invention provides a method for manufacturing para-aramid fibers, which includes: spinning a polymeric solution containing aramid polymer in an organic solvent through a spinneret into an inert gas to partially remove the organic solvent contained in the spun fiber; contacting the spun fiber with conditioning solution, so as to maintain residual water in fiber in a range of 10 to 15%; and subjecting the treated fiber to drawing, washing and heating in a dry-spinning manner. The present invention may greatly reduce energy consumption and costs for recovery of the solvent, as compared to a conventional manufacturing method of aramid fiber in a wet-spinning manner. Further, the present invention may solve conventional problems such as corrosion of apparatus, deterioration of working environments, or the like, since a concentrated sulfuric acid solvent is not used in a spinning process.Type: GrantFiled: December 19, 2013Date of Patent: May 22, 2018Assignee: KOLON INDUSTRIES, INC.Inventors: Tae Hak Park, Bum Hoon Lee, Jae Young Lee, Young Cheol Park, Kyeong Hwan Rho
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Publication number: 20150354093Abstract: The present invention provides a method for manufacturing para-aramid fibers, which includes: spinning a polymeric solution containing aramid polymer in an organic solvent through a spinneret into an inert gas to partially remove the organic solvent contained in the spun fiber; contacting the spun fiber with conditioning solution, so as to maintain residual water in fiber in a range of 10 to 15%; and subjecting the treated fiber to drawing, washing and heating in a dry-spinning manner. The present invention may greatly reduce energy consumption and costs for recovery of the solvent, as compared to a conventional manufacturing method of aramid fiber in a wet-spinning manner. Further, the present invention may solve conventional problems such as corrosion of apparatus, deterioration of working environments, or the like, since a concentrated sulfuric acid solvent is not used in a spinning process.Type: ApplicationFiled: December 19, 2013Publication date: December 10, 2015Applicant: KOLON INDUSTRIES, INC.Inventors: Tae Hak PARK, Bum Hoon LEE, Jae Young LEE, Young Cheol PARK, Kyeong Hwan RHO
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Patent number: 8574474Abstract: An aramid fiber and a method of producing the same is disclosed, which is capable of realizing high surface uniformity and improved tensile strength and elongation property, wherein the method comprises preparing an aromatic polyamide by polymerizing aromatic diamine with aromatic diacid halide; preparing a spinning dope by dissolving the aromatic polyamide in a solvent; and extruding the spinning dope through a spinneret, and sequentially passing the spinning dope through an air gap, a coagulation bath filled with a coagulation solution, and a coagulation tube having a jet opening, connected with the bottom of the coagulation bath, to obtain a filament wherein a distance from the upper surface of the coagulation solution contained in the coagulation bath to the jet opening of the coagulation tube is within a range between 10 and 35 mm.Type: GrantFiled: November 7, 2011Date of Patent: November 5, 2013Assignee: Kolon Industries, Inc.Inventors: Jae Young Lee, Jae Young Kim, Tae Hak Park, Sang Young Yeo
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Patent number: 8511054Abstract: Disclosed are a method of folding multiple filaments and a bundle of filament produced by the same. More particularly, the method of folding multiple filaments includes release-winding the filaments under a uniform release-winding tension, folding the released filaments in non-twisted states and winding the folded filaments to produce a bundle of filament, so as to effectively prevent some of the filaments in the bundle of filament from hanging down or becoming loose due to different tensions when the bundle of filament is release-wound for post processing. The bundle of filaments includes a plurality of filaments combined together in a non-twisted manner and has highly uniform weight of the filaments per unit length of the bundle of filament, wherein the standard deviation of the weight of each filament ranges from 0.0001 to 0.01 from their average weight.Type: GrantFiled: July 26, 2012Date of Patent: August 20, 2013Assignee: Kolon Industries, Inc.Inventors: Chang-Bae Lee, Tae-Hak Park, Il Nam
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Publication number: 20130167503Abstract: The present disclosure relates to a hybrid fiber fabricated with a low production cost while having excellent mechanical properties, as well as a method for fabricating the same. The disclosed hybrid fiber includes; a first filament, and a second filament different from the first filament, wherein a strength-strain curve of the hybrid fiber measured according to ASTM D 885 has at least one peak, provided that, if the strength-strain curve has at least two or more peaks, a difference in strain between a first peak having the lowest strain and a second peak having the highest strain, among the above two or more peaks, is 3% or less.Type: ApplicationFiled: September 9, 2011Publication date: July 4, 2013Applicant: KOLON INDUSTRIES, INC.Inventors: In Sik Han, Tae Hak Park
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Patent number: 8419990Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chloride and polymerization solvent put into the reactor 20 are agitated by an agitation device which is installed in the reactor 20 and consists of: (i) a rotor 3 driven by a motor 2 and having a plurality of pins 3a; and (ii) a stator 4 having a plurality of pins 4a, wherein spin speed of the rotor 3 is controlled to 10 to 100 times of both of feeding rates for the aromatic diacid chloride and the aromatic diamine in the polymerization solvent into the reactor and, at the same time, contact frequency between the pins 3a and the pins 4a is regulated within a range of 100 to 1,000 Hz.Type: GrantFiled: June 2, 2010Date of Patent: April 16, 2013Assignee: Kolon Industries, Inc.Inventors: In-Sik Han, Jae-Young Lee, Jae-Young Kim, Tae-Hak Park, So-Yeon Kwon
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Publication number: 20120285135Abstract: Disclosed are a method of folding multiple filaments and a bundle of filament produced by the same. More particularly, the method of folding multiple filaments includes release-winding the filaments under a uniform release-winding tension, folding the released filaments in non-twisted states and winding the folded filaments to produce a bundle of filament, so as to effectively prevent some of the filaments in the bundle of filament from hanging down or becoming loose due to different tensions when the bundle of filament is release-wound for post processing. The bundle of filaments includes a plurality of filaments combined together in a non-twisted manner and has highly uniform weight of the filaments per unit length of the bundle of filament, wherein the standard deviation of the weight of each filament ranges from 0.0001 to 0.01 from their average weight.Type: ApplicationFiled: July 26, 2012Publication date: November 15, 2012Applicant: KOLON INDUSTRIES, INC.Inventors: Chang-Bae LEE, Tae-Hak PARK, Il NAM
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Patent number: 8302373Abstract: Disclosed are a method of folding multiple filaments and a bundle of filament produced by the same. More particularly, the method of folding multiple filaments includes release-winding the filaments under a uniform release-winding tension, folding the released filaments in non-twisted states and winding the folded filaments to produce a bundle of filament, so as to effectively prevent some of the filaments in the bundle of filament from hanging down or becoming loose due to different tensions when the bundle of filament is release-wound for post processing. The bundle of filament includes a plurality of filaments folded together in non-twisted states and has a standard deviation in weight of the filaments per unit length of the bundle of filament ranging from 0.0001 to 0.01.Type: GrantFiled: May 13, 2008Date of Patent: November 6, 2012Assignee: Kolon Industries, Inc.Inventors: Chang-Bae Lee, Tae-Hak Park, Il Nam
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Publication number: 20120049406Abstract: An aramid fiber and a method of producing the same is disclosed, which is capable of realizing high surface uniformity and improved tensile strength and elongation property, wherein the method comprises preparing an aromatic polyamide by polymerizing aromatic diamine with aromatic diacid halide; preparing a spinning dope by dissolving the aromatic polyamide in a solvent; and extruding the spinning dope through a spinneret, and sequentially passing the spinning dope through an air gap, a coagulation bath filled with a coagulation solution, and a coagulation tube having a jet opening, connected with the bottom of the coagulation bath, to obtain a filament wherein a distance from the upper surface of the coagulation solution contained in the coagulation bath to the jet opening of the coagulation tube is within a range between 10 and 35 mm.Type: ApplicationFiled: November 7, 2011Publication date: March 1, 2012Inventors: Jae Young LEE, Jae Young KIM, Tae Hak PARK, Sang Young YEO
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Publication number: 20110045297Abstract: An aramid fiber and a method of producing the same is disclosed, which is capable of realizing high surface uniformity and improved tensile strength and elongation property, wherein the method comprises preparing an aromatic polyamide by polymerizing aromatic diamine with aromatic diacid halide; preparing a spinning dope by dissolving the aromatic polyamide in a solvent; and extruding the spinning dope through a spinneret, and sequentially passing the spinning dope through an air gap, a coagulation bath filled with a coagulation solution, and a coagulation tube having a jet opening, connected with the bottom of the coagulation bath, to obtain a filament wherein a distance from the upper surface of the coagulation solution contained in the coagulation bath to the jet opening of the coagulation tube is within a range between 10 and 35 mm.Type: ApplicationFiled: March 31, 2009Publication date: February 24, 2011Applicant: KOLON INDUSTRIES INC,Inventors: Jae Young Lee, Jae Young Kim, Tae Hak Park, Sang Young Yeo
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Publication number: 20100237532Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chloride and polymerization solvent put into the reactor 20 are agitated by an agitation device which is installed in the reactor 20 and consists of: (i) a rotor 3 driven by a motor 2 and having a plurality of pins 3a; and (ii) a stator 4 having a plurality of pins 4a, wherein spin speed of the rotor 3 is controlled to 10 to 100 times of both of feeding rates for the aromatic diacid chloride and the aromatic diamine in the polymerization solvent into the reactor and, at the same time, contact frequency between the pins 3a and the pins 4a is regulated within a range of 100 to 1,000 Hz.Type: ApplicationFiled: June 2, 2010Publication date: September 23, 2010Inventors: In-Sik Han, Jae-Young Lee, Jae-Young Kim, Tae-Hak Park, So-Yeon Kwon
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Patent number: 7776439Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chloride and polymerization solvent put into the reactor 20 are agitated by an agitation device which is installed in the reactor 20 and consists of: (i) a rotor 3 driven by a motor 2 and having a plurality of pins 3a; and (ii) a stator 4 having a plurality of pins 4a, wherein spin speed of the rotor 3 is controlled to 10 to 100 times of both of feeding rates for the aromatic diacid chloride and the aromatic diamine in the polymerization solvent into the reactor and, at the same time, contact frequency between the pins 3a and the pins 4a is regulated within a range of 100 to 1,000 Hz.Type: GrantFiled: July 5, 2006Date of Patent: August 17, 2010Assignee: Kolon Industries, Inc.Inventors: In-Sik Han, Jae-Young Lee, Jae-Young Kim, Tae-Hak Park, So-Yeon Kwon
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Publication number: 20100129655Abstract: Disclosed are a ripcord for optic cable and a method of manufacturing the same. The ripcord for optic cable has a coating layer formed by applying a coating solution, which includes a binder and a colorant dispersed in the binder, to a surface of a folded and twisted yarn formed by folding and twisting together wholly aromatic polyamide filaments.Type: ApplicationFiled: May 8, 2008Publication date: May 27, 2010Applicant: Kolon Industries, Inc.Inventors: Chang-Bae Lee, Tae-Hak Park, Jin-Woo Kim
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Publication number: 20100077717Abstract: Disclosed are a method of folding multiple filaments and a bundle of filament produced by the same. More particularly, the method of folding multiple filaments includes release-winding the filaments under a uniform release-winding tension, folding the released filaments in non-twisted states and winding the folded filaments to produce a bundle of filament, so as to effectively prevent some of the filaments in the bundle of filament from hanging down or becoming loose due to different tensions when the bundle of filament is release-wound for post processing. The bundle of filament includes a plurality of filaments folded together in non-twisted states and has a standard deviation in weight of the filaments per unit length of the bundle of filament ranging from 0.0001 to 0.01.Type: ApplicationFiled: May 13, 2008Publication date: April 1, 2010Applicant: Kolon TowerInventors: Chang-Bae Lee, Tae-Hak Park, Il Nam
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Patent number: 7647856Abstract: A missile launch and guidance apparatus of a rail-shoe launching type is disclosed. In a missile adapted to be launched while moving along a rail of a launch tube, a missile launch and guidance apparatus comprises: a bushing inserted into a missile body; a shoe, one end of which is inserted into the bushing, and the other end of which is in contact with the rail; and a spring inserted between the bushing and the shoe so as to provide a separation force to the shoe against the bushing. By separating the shoe from the missile in a lateral direction of the missile launching direction by an elastic force of the spring after launching the missile, the missile launch and guidance apparatus can keep constant the gap between the missile and the launch tube rail irrespective of the behavior of the missile taking place in a launching process, and the drag and weight of the missile launched from the launch tube is reduced to thereby exhibit the maximum flight performance.Type: GrantFiled: December 29, 2006Date of Patent: January 19, 2010Assignee: Agency for Defense DevelopmentInventors: Tae-Hak Park, Sang-Hun Shin
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Publication number: 20080227947Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chlrodie and polymerization solvent put into the reactor 20 are agitated by an agitation device which is installed in the reactor 20 and consists of: (i) a rotor 3 driven by a motor 2 and having a plurality of pins 3a; and (ii) a stator 4 having a plurality of pins 4a, wherein spin speed of the rotor 3 is controlled to 10 to 100 times of both of feeding rates for the aromatic diacid chloride and the aromatic diamine in the polymerization solvent into the reactor and, at the same time, contact frequency between the pins 3a and the pins 4a is regulated within a range of 100 to 1,000 Hz.Type: ApplicationFiled: July 5, 2006Publication date: September 18, 2008Inventors: In-Sik Han, Jae-Young Lee, Jae-Young Kim, Tae-Hak Park, So-Yeon Kwon
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Publication number: 20070283800Abstract: A missile launch and guidance apparatus of a rail-shoe launching type is disclosed. In a missile adapted to be launched while moving along a rail of a launch tube, a missile launch and guidance apparatus comprises: a bushing inserted into a missile body; a shoe, one end of which is inserted into the bushing, and the other end of which is in contact with the rail; and a spring inserted between the bushing and the shoe so as to provide a separation force to the shoe against the bushing. By separating the shoe from the missile in a lateral direction of the missile launching direction by an elastic force of the spring after launching the missile, the missile launch and guidance apparatus can keep constant the gap between the missile and the launch tube rail irrespective of the behavior of the missile taking place in a launching process, and the drag and weight of the missile launched from the launch tube is reduced to thereby exhibit the maximum flight performance.Type: ApplicationFiled: December 29, 2006Publication date: December 13, 2007Inventors: Tae-Hak PARK, Sang-Hun SHIN
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Publication number: 20070278348Abstract: Disclosed is an apparatus for opening an upper and lower split-type airframe hinge-coupled to a propulsion unit of a missile and separating a payload mounted in the airframe. The apparatus for opening the airframe of the missile by pyrotechnical power includes: pressure generation units installed between the airframe and the payload, for generating explosion pressure; and pressure transmission units connected to the pressure generation units, for applying force by the explosion pressure to the payload, and opening the airframe by reaction force with the payload. The apparatus for opening the airframe of the missile reduces an installation space and cuts down a manufacturing cost by simplifying the configuration by decreasing a number of components, improves airframe opening performance by instantaneously opening the airframe in exact timing, and enables the user to adjust airframe opening force in a target level.Type: ApplicationFiled: December 29, 2006Publication date: December 6, 2007Inventors: Tae-Hak Park, Myong-Shik Won, Choon-Kil Kang
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Patent number: 6286409Abstract: An apparatus for restraining and releasing a missile using a rigid sphere is disclosed.Type: GrantFiled: April 22, 1999Date of Patent: September 11, 2001Assignee: Agency for Defense DevelopmentInventors: Moon Soo Na, Yeol Wha Lee, Tae Hak Park, Heung Joon Park