Patents by Inventor Chi-Kyun Park

Chi-Kyun 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).

  • Patent number: 11951510
    Abstract: There is provided an apparatus for forming a magnetic pigment pattern on an article. The apparatus includes: a magnetic pattern mold having nonmagnetic pattern grooves engraved in a predetermined pattern and providing predetermined magnetic field lines on a pattern-forming object surface of an article by generating magnetism in areas outside the nonmagnetic pattern grooves; and a spray unit spraying an adhesive resin composite containing a ferromagnetic pigment onto the pattern-forming object surface of the article. A predetermined magnetic pigment pattern is formed while the magnetic pigment of the adhesive resin composite that is applied to the pattern-forming object surface of the article is rearranged along magnetic field lines generated by the magnetic pattern mold.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: April 9, 2024
    Assignee: ASSEMS INC.
    Inventors: Ji-Sang Jang, Jae-Jeong Lee, Kyoung-Kyu Kim, Kyung-Seok Choi, Chi-Kyun Park
  • Publication number: 20240090328
    Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.
    Type: Application
    Filed: October 26, 2023
    Publication date: March 14, 2024
    Inventors: Hee-Choon AHN, Young-Kwang KIM, Su-Hyun LEE, Ji-Song JUN, Seon-Woo LEE, Chi-Sik KIM, Kyoung-Jin PARK, Nam-Kyun KIM, Kyung-Hoon CHOI, Jae-Hoon SHIM, Young-Jun CHO, Kyung-Joo LEE
  • Publication number: 20230415194
    Abstract: There is provided an apparatus for forming a magnetic pigment pattern on an article. The apparatus includes: a magnetic pattern mold having nonmagnetic pattern grooves engraved in a predetermined pattern and providing predetermined magnetic field lines on a pattern-forming object surface of an article by generating magnetism in areas outside the nonmagnetic pattern grooves; and a spray unit spraying an adhesive resin composite containing a ferromagnetic pigment onto the pattern-forming object surface of the article. A predetermined magnetic pigment pattern is formed while the magnetic pigment of the adhesive resin composite that is applied to the pattern-forming object surface of the article is rearranged along magnetic field lines generated by the magnetic pattern mold.
    Type: Application
    Filed: December 28, 2022
    Publication date: December 28, 2023
    Applicant: ASSEMS INC.
    Inventors: Ji-Sang JANG, Jae-Jeong LEE, Kyoung-Kyu KIM, Kyung-Seok CHOI, Chi-Kyun PARK
  • Publication number: 20230332343
    Abstract: There is provided an anhydrous dyeing system for yarn, including: a transfer printer which repeatedly sprays dye ink on a surface of a transfer sheet a plurality of times to laminate and apply ink layers; a dyeing jig which is in a drum form having a plurality of microholes formed in an outer circumferential surface thereof to penetrate inside and outside; a process chamber into which the dyeing jig is put; a heating member for heating the yarn wound on the dyeing jig, by supplying heat to the inside of the process chamber; and a vacuum-generating member which is in communication with an internal space of the dyeing jig and vacuum-evacuates the air in the internal space of the dyeing jig to thereby form a vacuum pressure inside the dyeing jig.
    Type: Application
    Filed: August 26, 2021
    Publication date: October 19, 2023
    Applicant: ASSEMS INC.
    Inventors: Ji-Sang JANG, Jae-Jeong LEE, Kyoung-Kyu KIM, Kyung-Seok CHOI, Chi-Kyun PARK, Yong-Hoon PARK
  • Publication number: 20220396905
    Abstract: An anhydrous fiber-dyeing apparatus using vacuum transfer, includes: a hollow drum in which a plurality of fine holes are formed to penetrate therethrough, and a fiber to be dyed are wound around an outer surface thereof; a transfer film covering the outer surface of the fiber wound around the drum and having an inner side surface coated with a dye; heating means heating the fiber wound around the drum; and a vacuum means suctioning air through an inner space of the drum to form a vacuum pressure through the fine holes of the drum.
    Type: Application
    Filed: November 12, 2020
    Publication date: December 15, 2022
    Applicant: ASSEMS INC.
    Inventors: Ji-Sang JANG, Jae-Jeong LEE, Kyoung Kyu KIM, Kyung-Seok CHOI, Chi-Kyun PARK, Yong-Hoon PARK
  • Publication number: 20220386744
    Abstract: A three-dimensional out sole having a pattern having improved quality and durability has a dye permeated into the surface of the outsole. A depth to which the dye penetrating the micropores is 0.08 mm to 0.12 mm. The dye is permeated into the microspores through vacuum suction. The dye is digitally printed on a thermoplastic sheet. The thermoplastic sheet on which the dye is printed is heated to be softened with flexibility. The softened sheet having flexibility is closely attached to a surface of the shoe outsole having the three-dimensional shape through vacuum adsorption and then is permeated therein.
    Type: Application
    Filed: October 21, 2020
    Publication date: December 8, 2022
    Applicant: ASSEMS INC.
    Inventors: Ji-Sang JANG, Jae-Jeong LEE, Kyoung Kyu KIM, Kyung-Seok CHOI, Chi-Kyun PARK, Yong-Hoon PARK
  • Patent number: 10038220
    Abstract: A lithium ion electrochemical cell having an electrolyte with reduced carbonate content is described. The reduced carbonate electrolyte minimizes electrolyte out-gassing when the cell is exposed to temperatures above 100° C. The preferred electrolyte comprises a primary solvent of ?-butyrolactone and a secondary solvent comprising an aliphatic or halogen constituent. A most preferred electrolyte consists essentially of ?-butyrolactone as a primary solvent, fluorotoluene as a secondary solvent, and an electrolyte additive formulation of vinylene carbonate, fluorinated ethylene carbonate, and polyvinyl pyridine-co-styrene. An alkali metal salt is added to the solvent admixture.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 31, 2018
    Assignee: Greatbatch Ltd.
    Inventor: Chi-Kyun Park
  • Patent number: 9825333
    Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: November 21, 2017
    Assignee: Greatbatch Ltd.
    Inventor: Chi-Kyun Park
  • Publication number: 20170194668
    Abstract: A lithium ion electrochemical cell having an electrolyte with reduced carbonate content is described. The reduced carbonate electrolyte minimizes electrolyte out-gassing when the cell is exposed to temperatures above 100° C. The preferred electrolyte comprises a primary solvent of ?-butyrolactone and a secondary solvent comprising an aliphatic or halogen constituent. A most preferred electrolyte consists essentially of ?-butyrolactone as a primary solvent, fluorotoluene as a secondary solvent, and an electrolyte additive formulation of vinylene carbonate, fluorinated ethylene carbonate, and polyvinyl pyridine-co-styrene. An alkali metal salt is added to the solvent admixture.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventor: Chi-Kyun Park
  • Patent number: 8940443
    Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: January 27, 2015
    Assignee: Greatbatch Ltd.
    Inventor: Chi-Kyun Park
  • Publication number: 20150017552
    Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventor: Chi-Kyun Park
  • Publication number: 20100040956
    Abstract: An electrolyte comprising an organic solvent, a lithium salt, and a polymer additive comprised of repeating vinyl units joined to one or more heterocyclic amine moieties is described. The heterocyclic amine contains five to ten ring atoms, inclusive. An electrochemical cell is also disclosed. The preferred cell comprises a negative electrode which intercalates with lithium, a positive electrode comprising an electrode active material which intercalates with lithium, and the electrolyte of the present invention activating the negative and the positive electrodes.
    Type: Application
    Filed: November 14, 2008
    Publication date: February 18, 2010
    Applicant: Greatbatch Ltd.
    Inventor: Chi-Kyun Park
  • Patent number: 7534527
    Abstract: Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benzeneimidate, benzitriazolate and the like); multi carboxylates (e.g. oxalate, 1,2,4,5-benzenetetracarboxylate and the like), and pyromellitic diimidate. The organic lithium salts of the invention have the general formula: Liq[Org(MXn)m], in which Org represents the organic moieties and MXn represents an organic or inorganic boron, aluminum or phosphorous containing Lewis acid.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: May 19, 2009
    Assignee: SKC Power Tech, Inc.
    Inventors: Zhiqiang Xu, Chi-Kyun Park, Zhiwei Zhang, Chai Chul
  • Patent number: 7220519
    Abstract: An electrolyte composition, a lithium battery using the electrolyte composition, and a method of manufacturing the lithium battery are provided. The electrolyte composition contains: a lithium salt; an organic solvent containing 15-50% by weight of propylene carbonate based on the total weight of the electrolyte composition; a nitrogen-containing compound; and cyclohexylbenzene. The lithium battery manufactured using the electrolyte composition has improved stability even when overcharged and improved cycle characteristics.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: May 22, 2007
    Assignee: SKC Co., Ltd.
    Inventors: Kwon Sun Roh, Jong Hyuk Choi, Chi Kyun Park, Jon Ha Lee
  • Publication number: 20060068295
    Abstract: Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benzeneimidate, benzitriazolate and the like); multi carboxylates (e.g. oxalate, 1,2,4,5-benzenetetracarboxylate and the like), and pyromellitic diimidate. The organic lithium salts of the invention have the general formula: Liq[Org(MXn)m], in which Org represents the organic moieties and MXn represents an organic or inorganic boron, aluminum or phosphorous containing Lewis acid.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 30, 2006
    Applicant: SKC Power Tech, Inc.
    Inventors: Zhiqiang Xu, Chi-Kyun Park, Zhiwei Zhang, Chai Chul
  • Publication number: 20050042520
    Abstract: An electrolyte composition, a lithium battery using the electrolyte composition, and a method of manufacturing the lithium battery are provided. The electrolyte composition contains: a lithium salt; an organic solvent containing 15-50% by weight of propylene carbonate based on the total weight of the electrolyte composition; a nitrogen-containing compound; and cyclohexylbenzene. The lithium battery manufactured using the electrolyte composition has improved stability even when overcharged and improved cycle characteristics.
    Type: Application
    Filed: August 18, 2004
    Publication date: February 24, 2005
    Applicant: SKC CO., LTD.
    Inventors: Kwon Sun Roh, Jong Hyuk Choi, Chi Kyun Park, Jon Ha Lee
  • Patent number: 6841303
    Abstract: Ionic gel polymer electrolytes for rechargeable polymer batteries preferably are formed by dissolving a gelling agent into organic liquid electrolytes, and then gelling the precursor in situ at elevated temperature after pouring it into a battery case that contains a cathode, an anode and a separator. The gel polymer electrolytes exhibit excellent ionic conductivity of up to about 10?2 S/cm and voltage stability for lithium rechargeable batteries. Most preferably, the gel polymer electrolyte is the reaction product of (A) a heterocyclic amine-group containing material (preferably a vinvlpyridine), and (B) halide or epoxy-group containing polymers, copolymers, oligomers or monomers that are capable of reacting with nitrogen-containing compounds, such as polymers, copolymers, oligomers or monomers containing alkylene halides or halomethyl group substituted aromatic units or at least one epoxy unit.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: January 11, 2005
    Assignee: SKC Co., Ltd.
    Inventors: Chi-Kyun Park, Zhiwei Zhang, Lu Ying Sun, Chul Chai
  • Patent number: 6692873
    Abstract: An electrode active material forming composition, a separator forming composition and a manufacturing method of a lithium secondary battery using the compositions are provided.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: February 17, 2004
    Assignee: SKC Co., Ltd.
    Inventors: Chi-kyun Park, Archana Kakirde, Peikang Liu, Venkatesan Manivannan, Chul Chai, Dong-joon Ihm, Jon-ha Lee, Kwon-sun Roh
  • Patent number: 6547839
    Abstract: Lithium-ion electrochemical cells include an anode, a cathode and a separator between the anode and cathode, wherein at least one of the anode, cathode and separator includes a polysiloxane coating thereon. Most preferably, the polysiloxane coating is the polymerized reaction product of dimethyl siloxane and tetra(trimethylsiloxy) silane), and is present on the surface in an amount between about 0.05 to about 0.17 mg/cm2. After being coated with the polysiloxane adhesive, the electrodes and separator can easily be attached one to another at ambient temperature by application of pressure using a hand roller or with a laminator, and then subsequently formed into a spiral or stacked structure for placement in a battery cell case.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: April 15, 2003
    Assignee: SKC Co., Ltd.
    Inventors: Zhiwei Zhang, Chi-Kyun Park, Lu Ying Sun, Chul Chai
  • Patent number: 6503661
    Abstract: A composition for forming polymer electrolyte and a lithium secondary battery employing the polymer electrolyte prepared using the composition are provided. The composition for forming polymer solid electrolyte having a polymer resin, a plasticizer, a filler and a solvent, wherein the filler is synthetic zeolite having an affinity for an organic solvent or moisture. Therefore, the mechanical strength and ionic conductivity can be improved by adding synthetic zeolite as a filler when forming polymer electrolyte. Also, use of such polymer electrolyte makes it possible to prepare lithium secondary batteries having good high-current discharge characteristics and excellent discharge capacity characteristics even under repeated charge/discharge conditions.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: January 7, 2003
    Assignee: SKC Co., Ltd.
    Inventors: Chi-kyun Park, Archana Kakirde, Peikang Liu, Venkatesan Manivannan, Chul Chai, Dong-joon Ihm, Jon-ha Lee