Patents by Inventor Kil Seuk Byun
Kil Seuk Byun 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: 10793687Abstract: Provided is a hard capsule. The provided hard capsule includes water-soluble cellulose ether, about 0.5 parts by weight to about 1.5 parts by weight of a gelation agent based on 100 parts by weight of the water-soluble cellulose ether, and about 0 parts by weight to about 0.3 parts by weight of a gelation aid based on 100 parts by weight of the water-soluble cellulose ether, wherein the hard capsule comprises a body and a cap that seals the body, and a ratio of a maximum thickness to a minimum thickness of the body and the cap is each 2.5 or less.Type: GrantFiled: July 16, 2013Date of Patent: October 6, 2020Assignee: LOTTE FINE CHEMICAL CO., LTD.Inventors: Jin Ryul Son, Kil Seuk Byun
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Patent number: 10765194Abstract: The present invention relates to a method of preparing a dry hydrogel sheet including the steps of: preparing a cellulose ether dispersion solution; transferring the dispersion solution to a coater while maintaining the temperature of the dispersion solution in the range of a gelation temperature of the dispersion solution to a boiling point of a dispersion medium; applying the dispersion solution transferred to the coater as a sheet; preparing a hydrogel sheet by cooling the applied dispersion solution to induce gelation; and drying the hydrogel sheet. Since the dry hydrogel sheet prepared by the method has a low moisture content, it is possible to ensure the stability of active ingredients, quantify functional components to be applied to the dry hydrogel sheet, and ensure the uniformity of the surface appearance and thickness of the dry hydrogel sheet, which results in the improvement of the quality of a final product.Type: GrantFiled: October 27, 2016Date of Patent: September 8, 2020Assignee: LOTTE FINE CHEMICAL CO., LTD.Inventors: Ji Seon Jeong, Ju Hee Shin, Sung Hwan Bang, Ju Young Jung, Kil Seuk Byun, Kyong Min Lee
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Publication number: 20180325244Abstract: The present invention relates to a method of preparing a dry hydrogel sheet including the steps of: preparing a cellulose ether dispersion solution; transferring the dispersion solution to a coater while maintaining the temperature of the dispersion solution in the range of a gelation temperature of the dispersion solution to a boiling point of a dispersion medium; applying the dispersion solution transferred to the coater as a sheet; preparing a hydrogel sheet by cooling the applied dispersion solution to induce gelation; and drying the hydrogel sheet. Since the dry hydrogel sheet prepared by the method has a low moisture content, it is possible to ensure the stability of active ingredients, quantify functional components to be applied to the dry hydrogel sheet, and ensure the uniformity of the surface appearance and thickness of the dry hydrogel sheet, which results in the improvement of the quality of a final product.Type: ApplicationFiled: October 27, 2016Publication date: November 15, 2018Applicant: LOTTE FINE CHEMICAL CO., LTD.Inventors: Ji Seon Jeong, Ju Hee Shin, Sung Hwan Bang, Ju Young Jung, Kil Seuk Byun, Kyong Min Lee
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Publication number: 20170129991Abstract: The present invention relates to a method for using a combination of two kinds of thermal stabilizers in a production process in order to improve the thermal stability of biodegradable polyester resins, and to biodegradable polyester resin produced therefrom. In said method, two kinds of thermal stabilizers improve thermal stability by acting complementarily with each other. Thus, a high temperature reaction is possible, and due to an increase in the reactivity, the reaction time is shortened and the molecular weight is increased. In addition, the obtained resin can provide high quality products, since the acid value thereof is reduced to improve the hydrolysis resistance thereof, and the chromaticity thereof is enhanced to thereby be capable of preventing a yellowing phenomenon of the final product.Type: ApplicationFiled: May 22, 2015Publication date: May 11, 2017Applicant: LOTTE FINE CHEMICAL CO., LTD.Inventors: Ye Jin Kim, Ki Chull Yun, Gyung Don Kang, Ji Soo Ahn, Sang Mi Kang, Min Kyoung Kim, Mi Hwa Yang, Kil Seuk Byun
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Patent number: 9637589Abstract: Provided is a method of continuous preparation of a biodegradable aliphatic/aromatic polyester copolymer, the method including: performing a first esterification reaction of an aliphatic dihydroxy compound and an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product obtained by the first esterification reaction; obtaining a pre-polymer by continuously performing a first polycondensation reaction of a reaction product obtained by the second esterification reaction; and continuously performing polycondensation reaction of the pre-polymer, wherein an aromatic carboxylic acid is added to a reactor in which the first esterification reaction or the second esterification reaction is performed, to prepare the biodegradable aliphatic/aromatic polyester copolymer.Type: GrantFiled: May 20, 2013Date of Patent: May 2, 2017Assignees: LOTTE FINE CHEMICAL CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Kil Seuk Byun, Jung Ryum, Boo Seong Kim, Sei Hoon Kim, Sung Bae Park
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Publication number: 20170112111Abstract: The present invention relates to a biodegradable resin having outstanding colouring properties, and provides a resin composition which does not give rise to problems such as reduced strength due to colouration. The composition of the present invention, suggests that a PBSAT resin is used as a biodegradable resin, and colouration is performed with same. Also, at this time, the colourant can be mixed in the form of masterbatch. In the present invention, the resin composition is used in the production of various products, in particular monofilament yarn produced via spinning and a fishing net manufactured from same is provided. Fishing nets such as the above are advantageous in that such fishing nets can be realized in various colours in accordance with customer requirements and satisfy the required strength and, after use, degrade naturally in seawater and so do not give rise to problems like environmental pollution.Type: ApplicationFiled: May 22, 2015Publication date: April 27, 2017Applicant: LOTTE FINE CHEMICAL CO., LTD.Inventors: Min Kyoung Kim, Ki Chull Yun, Gyung Don Kang, Ji Soo Ahn, Sang Mi Kang, Ye Jin Kim, Mi Hwa Yang, Kil Seuk Byun
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Patent number: 9447233Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C.Type: GrantFiled: July 18, 2013Date of Patent: September 20, 2016Assignees: LOTTE FINE CHEMICAL CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Kil Seuk Byun, Jung Ryum, Boo Seong Kim, Sei Hoon Kim, Sung Bae Park
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Patent number: 9416224Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product from the first esterification reaction; continuously performing a first polycondensation reaction of a reaction product from the second esterification reaction to obtain a prepolymer; continuously performing a second polycondensation reaction of the prepolymer to obtain a second polycondensation reaction product having an intrinsic viscosity from about 0.9 dl/g to about 1.Type: GrantFiled: July 18, 2013Date of Patent: August 16, 2016Assignees: LOTTE FINE CHEMICAL CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Kil Seuk Byun, Jung Ryum, Boo Seong Kim, Sei Hoon Kim, Sung Bae Park
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Patent number: 9403938Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C.Type: GrantFiled: July 18, 2013Date of Patent: August 2, 2016Assignees: LOTTE FINE CHEMICAL CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Kil Seuk Byun, Jung Ryum, Boo Seong Kim, Sei Hoon Kim, Sung Bae Park
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Publication number: 20160208125Abstract: Provided is a hard capsule. The provided hard capsule includes a water-soluble cellulose ether and a gelation agent, wherein an amount of the gelation agent is about 0.5 parts by weight to about 1.5 parts by weight based on 100 parts by weight of the water-soluble cellulose ether, and further includes 0 parts by weight to about 0.3 parts by weight of a gelation aid based on 100 parts by weight of the water-soluble cellulose ether.Type: ApplicationFiled: July 16, 2013Publication date: July 21, 2016Inventors: Jin Ryul SON, Kil Seuk BYUN
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Patent number: 9334359Abstract: Provided is a method of continuous production of a biodegradable aliphatic polyester including continuously performing an esterification reaction of a mixture including an aliphatic dihydroxy compound and aliphatic dicarboxylic acid at a temperature of 185° C. or less to obtain an ester; continuously performing a first polycondensation reaction of the ester to obtain a preliminary polymer; and continuously performing a polycondensation reaction of the preliminary polymer. According to the method of production, an amount of the aliphatic dihydroxy compound used decreases, which is a starting material, thereby decreasing the manufacturing cost of the biodegradable aliphatic polyester.Type: GrantFiled: May 20, 2013Date of Patent: May 10, 2016Assignees: LOTTE FINE CHEMICAL CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Jung Ryum, Boo Seong Kim, Kil Seuk Byun, Sei Hoon Kim, Sung Bae Park
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Publication number: 20160090443Abstract: Provided are a biodegradable polyester resin and an article including the resin. The provided biodegradable polyester resin includes an aliphatic dicarboxylic acid residue including a succinic acid residue and an adipic acid residue; and an aliphatic diol residue including at least one selected from the group consisting of an ethylene glycol residue and a butanediol residue in order to improve biodegradability and flexibility.Type: ApplicationFiled: May 30, 2014Publication date: March 31, 2016Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Ye Jin KIM, Gyung Don KANG, Su Kyung KIM, Min Kyoung KIM, Soo Youn CHOI, Ki Chull YOON, Kil Seuk BYUN
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Publication number: 20150315334Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C.Type: ApplicationFiled: July 18, 2013Publication date: November 5, 2015Inventors: Gyung Don KANG, Ki Chull YUN, Sang Yob KIM, Kil Seuk BYUN, Jung RYUM, Boo Seong KIM, Sei Hoon KIM, Sung Bae PARK
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Publication number: 20150315335Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C.Type: ApplicationFiled: July 18, 2013Publication date: November 5, 2015Applicants: SAMSUNG FINE CHEMICALS CO., LTD., S-ENPOL CO., LTD.Inventors: Gyung Don KANG, Ki Chull YUN, Sang Yob KIM, Kil Seuk BYUN, Jung RYUM, Boo Seong KIM, Sei Hoon KIM, Sung Bae PARK
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Publication number: 20150307657Abstract: A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product from the first esterification reaction; continuously performing a first polycondensation reaction of a reaction product from the second esterification reaction to obtain a prepolymer; continuously performing a second polycondensation reaction of the prepolymer to obtain a second polycondensation reaction product having an intrinsic viscosity from about 0.9 dl/g to about 1.Type: ApplicationFiled: July 18, 2013Publication date: October 29, 2015Inventors: Gyung Don KANG, Ki Chull YUN, Sang Yob KIM, Kil Seuk BYUN, Jung RYUM, Boo Seong KIM, Sei Hoon KIM, Sung Bae PARK
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Publication number: 20150307672Abstract: Provided is a film. The film includes water-soluble cellulose ether, about 0.5 parts by weight to about 1.5 parts by weight of a gelation agent based on 100 parts by weight of the water-soluble cellulose ether, and 0 parts by weight to about 0.3 parts by weight of a gelation aid based on 100 parts by weight of the water-soluble cellulose ether, wherein light transmittance is 80% or greater.Type: ApplicationFiled: July 16, 2013Publication date: October 29, 2015Inventors: Jin Ryul SON, Kil Seuk BYUN
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Publication number: 20150291744Abstract: Provided is a hard capsule. The provided hard capsule includes water-soluble cellulose ether, about 0.5 parts by weight to about 1.5 parts by weight of a gelation agent based on 100 parts by weight of the water-soluble cellulose ether, and about 0 parts by weight to about 0.3 parts by weight of a gelation aid based on 100 parts by weight of the water-soluble cellulose ether, wherein the hard capsule comprises a body and a cap that seals the body, and a ratio of a maximum thickness to a minimum thickness of the body and the cap is each 2.5 or less.Type: ApplicationFiled: July 16, 2013Publication date: October 15, 2015Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Jin Ryul Son, Kil Seuk Byun
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Publication number: 20150252142Abstract: Provided is a method of continuous production of a biodegradable aliphatic polyester including continuously performing an esterification reaction of a mixture including an aliphatic dihydroxy compound and aliphatic dicarboxylic acid at a temperature of 185° C. or less to obtain an ester; continuously performing a first polycondensation reaction of the ester to obtain a preliminary polymer; and continuously performing a polycondensation reaction of the preliminary polymer. According to the method of production, an amount of the aliphatic dihydroxy compound used decreases, which is a starting material, thereby decreasing the manufacturing cost of the biodegradable aliphatic polyester.Type: ApplicationFiled: May 20, 2013Publication date: September 10, 2015Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Jung Ryum, Boo Seong Kim, Kil Seuk Byun, Sei Hoon Kim, Sung Bae Park
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Publication number: 20150183927Abstract: Provided is a method of continuous preparation of a biodegradable aliphatic/aromatic polyester copolymer, the method including: performing a first esterification reaction of an aliphatic dihydroxy compound and an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product obtained by the first esterification reaction; obtaining a pre-polymer by continuously performing a first polycondensation reaction of a reaction product obtained by the second esterification reaction; and continuously performing polycondensation reaction of the pre-polymer, wherein an aromatic carboxylic acid is added to a reactor in which the first esterification reaction or the second esterification reaction is performed, to prepare the biodegradable aliphatic/aromatic polyester copolymer.Type: ApplicationFiled: May 20, 2013Publication date: July 2, 2015Applicants: S-ENPOL CO., LTD., SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Gyung Don Kang, Ki Chull Yun, Sang Yob Kim, Kil Seuk Byun, Jung Ryum, Boo Seong Kim, Sei Hoon Kim, Sung Bae Park
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Patent number: 8599504Abstract: A prism sheet, a backlight unit, and a liquid crystal display device, the prism sheet including a transparent substrate; and at least one prism on the transparent substrate, wherein a refractive index (n) and a basic angle (?) of the at least one prism satisfies the following condition: 1?n/sin ??4.Type: GrantFiled: January 20, 2011Date of Patent: December 3, 2013Assignee: Cheil Industries, Inc.Inventors: Ki Cheol Yoon, Dong Yoon Shin, Ji Soo Ahn, Sang Mi Kang, Kil Seuk Byun, Seong Joong Kim