Patents by Inventor Youn Choi

Youn 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).

  • Publication number: 20150318543
    Abstract: Disclosed is an electrode active material for a lithium secondary battery including a first material including a carbon material, a second material of a nanostructure formed on the first material, the second material including at least one selected from a metal and a metalloid capable of reversibly alloying with lithium, and a third material present on a surface of at least one of the first material and the second material to control a side reaction with an electrolyte solution, an electrode including the electrode active material, and a lithium secondary battery having the electrode.
    Type: Application
    Filed: June 20, 2014
    Publication date: November 5, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Yong-Ju Lee, Je-Young Kim, Mi-Rim Lee, Byung-Hun Oh, Seung-Youn Choi
  • Publication number: 20150299384
    Abstract: The present invention provides a method of preparing a polyester-based polymer and a polyester-based polymer prepared by the method. The method of preparing the polyester-based polymer includes a prepolymerization step of polymerizing a dicarboxylic acid compound (A), a diol compound (B), and an aromatic branching agent (C) at 160-220° C. to produce a prepolymer; and a condensation polymerization step of performing a condensation polymerization of the prepolymer at 200-250° C., under a vacuum pressure of 0.1 to 2 Torr.
    Type: Application
    Filed: July 30, 2013
    Publication date: October 22, 2015
    Inventors: Hee Soo KIM, Ye Jin KIM, Soo Youn CHOI, Min Kyoung KIM, Ki Chull YUN
  • Publication number: 20150304557
    Abstract: An array camera, a mobile terminal, and methods for operating the same are disclosed. The method for operating an array camera having a plurality of camera modules includes acquiring images through the plurality of camera modules, grouping the acquired images into a first group and a second group by comparing the acquired images, and generating a composite image using images of the first group.
    Type: Application
    Filed: April 16, 2013
    Publication date: October 22, 2015
    Applicant: LG ELECTRONICS INC.
    Inventor: Ji Youn CHOI
  • Publication number: 20150291731
    Abstract: The present invention provides a method of preparing a polyester-based polymer and a polyester-based polymer prepared by the method. The method of preparing the polyester-based polymer includes a prepolymerization step of polymerizing a dicarboxylic acid compound (A), a diol compound (B), and a carbodiimide compound (C) at 160-220° C. to produce a prepolymer; and a condensation polymerization step of performing a condensation polymerization of the prepolymer at 200-250° C., under a vacuum pressure of 0.1 to 2 Torr.
    Type: Application
    Filed: July 30, 2013
    Publication date: October 15, 2015
    Inventors: Hee Soo KIM, Soo Youn CHOI, Jong Pil CHUN, Ki Chull YUN
  • Publication number: 20150158974
    Abstract: There is provided a method of preparation for a biodegradable co-polyester resin with improved hydrolysis resistance, the method including performing a primary esterification reaction between an aliphatic dihydroxy compound and an aliphatic dicarboxylic acid compound, and performing a secondary transesterification reaction with addition of an aromatic dicarboxylate after the primary esterification reaction, in which a short chain alcohol-type branching agent is added to the primary esterification reaction or to the secondary transesterification reaction.
    Type: Application
    Filed: May 10, 2013
    Publication date: June 11, 2015
    Inventors: Jong Pil Chun, Hee Soo Kim, Ye Jin Kim, Soo Youn Choi, Ki Chull Yun, Min Kyoung Kim, Nam Yeong Yeom, Sang Mi Kang
  • Publication number: 20150119481
    Abstract: There are provided a resin composition for foaming including a biodegradable resin and a foamed article made thereof. The resin composition for foaming according to the present invention includes an ethylene-vinyl acetate resin, a biodegradable polyester resin containing a monomer of a double bond compound, a cross-linking agent, a co-crosslinking agent, a filler, and a foaming agent. In the resin composition, the double bond in the biodegradable polyester resin can be chemically cross-linked to the ethylene-vinyl acetate resin by a cross-linking agent, so that a compatibility with the ethylene-vinyl acetate resin can be improved, processability (mold releasability) during a mixing and melting process can be improved, and a foaming property and a mechanical property of a foamed article can be remarkably improved.
    Type: Application
    Filed: May 13, 2013
    Publication date: April 30, 2015
    Applicant: SAMSUNG FINE CHEMCIALS CO., LTD.
    Inventors: Jong Pil Chun, Hee Soo Kim, Soo Youn Choi, Ye Jin Kim, Ki Chull Yun, Min Kyoung Kim
  • Publication number: 20140367529
    Abstract: A hydraulic pipe fixing apparatus for a boom-swing type excavator is disclosed, which makes hydraulic hoses for attachments and hydraulic hoses for additional option devices be arranged in predetermined positions inside a boom supporter (4).
    Type: Application
    Filed: November 30, 2011
    Publication date: December 18, 2014
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jin-Youn Choi, Young-Jin Son
  • Publication number: 20140363741
    Abstract: The present invention relates to an electrode active material for a lithium secondary battery and the preparation thereof. The electrode active material for a lithium secondary battery according to the present invention comprises a core including (a) first particulates consisting of an oxide of a metal (metalloid) capable of alloying with lithium, and (b) second particulates consisting of an oxide containing the same metal (metalloid) together with lithium; and a conductive carbon layer coated on the surface of the core. The electrode active material of the present invention has high capacity and improved electric conductivity, thereby providing good charge and discharge rate capability.
    Type: Application
    Filed: August 25, 2014
    Publication date: December 11, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Yong-Ju Lee, Je-Young Kim, Seung-Youn Choi, Dong-Sub Jung
  • Publication number: 20140322601
    Abstract: The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics.
    Type: Application
    Filed: July 9, 2014
    Publication date: October 30, 2014
    Inventors: Yong-Ju Lee, Yoon-Ah Kang, Je-Young Kim, Seung-Youn Choi, Mi-Rim Lee, Hye-Ran Jung, Jung-Woo Yoo
  • Publication number: 20140154578
    Abstract: Provided are an anode active material including a porous silicon oxide-carbon material composite which includes a porous silicon oxide including pores and a line-type carbon material coated on a surface, in the pores, or on the surface and in the pores of the porous silicon oxide, and a method of preparing the anode active material. Since the silicon oxide of the anode active material according to an embodiment of the present invention may include the plurality of pores, resistance to the mechanical stress due to a volume change may be improved. Also, since the line-type carbon material is bonded to the inside of the pores, conductivity may not be decreased even in the case in which internal cracks occur in the porous silicon oxide and lifetime characteristics may be improved.
    Type: Application
    Filed: January 30, 2014
    Publication date: June 5, 2014
    Applicant: LG Chem, Ltd.
    Inventors: Jung Woo Yoo, Je Young Kim, Yong Ju Lee, Seung Youn Choi, Yoon Ah Kang, Mi Rim Lee, Hye Ran Jung
  • Publication number: 20130337325
    Abstract: Provided is an anode including an anode active material including SiOx (0<x?1) and a carbon material having a surface coated with amorphous carbon, wherein a crystal orientation ratio is in a range of 0.07 to 0.17. A lithium secondary battery including the anode of the present invention may have improved life characteristics, low thickness change rate, and improved initial discharge capacity.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 19, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Hye Ran Jung, Seung Youn Choi, Yong Ju Lee, Mi Rim Lee, Je Young Kim
  • Publication number: 20130292998
    Abstract: Disclosed is a brake device for braking front and rear axles by working oil supplied to front and rear brake cylinders from a hydraulic pump according to the control of a brake pedal.
    Type: Application
    Filed: December 28, 2010
    Publication date: November 7, 2013
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jin-Youn Choi, Young-Jin Son
  • Publication number: 20130213031
    Abstract: Disclosed is a hydraulic system for a construction machine, which makes it possible to adjust the geometric position of a working device comprising a boom and an arm by means of a single manipulation lever, thereby enabling a leveling/flattening process to be conveniently performed. The hydraulic system includes: a working mode selection switch for selecting a leveling/flattening process; a boom driving switch valve for controlling the driving of a boom cylinder in response to a control signal from a first manipulation lever; an arm driving switch valve for controlling the driving of an arm cylinder in response to a control signal from a second manipulation lever; a shuttle valve including input parts that connect to both an electronic proportional control valve and to the first manipulation lever, respectively, and an output part connecting to the boom driving switch valve; and an electronic controller.
    Type: Application
    Filed: October 20, 2010
    Publication date: August 22, 2013
    Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Jae-Whan Ok, Jin-Youn Choi
  • Patent number: 8173729
    Abstract: The present invention relates to a photosensitive resin composition, particularly to a photosensitive resin composition for forming an interlayer organic insulating film for TFT-LCD, comprising 0.01 to 20 wt % of UV stabilizer or radical scavenger. The photosensitive resin composition of the present invention can be used for forming an interlayer organic insulating film for TFT-LCD to improve active unfilled area upon over exposure in liquid crystal photo-alignment process, can easily control resolution of pattern, and is particularly suitable for forming a planarization layer of an interlayer organic insulating film.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: May 8, 2012
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Hyoc-min Youn, Byung-uk Kim, Ki-hyuk Koo, Tae-hoon Yeo, Joo-pyo Yun, Hong-dae Shin, Sang Hoon Lee, Dong-myung Kim, Su-youn Choi, Jin Sun Kim, Chang-Min Woo, Hong-Suk Kim
  • Patent number: 8126292
    Abstract: An image signal processor for processing an input image signal to output an output image signal includes an input unit receiving the input image signal, a noise removal unit removing noise from the input image signal, and a scaler reducing, maintaining or magnifying the image size of the input image signal. The scaler directly receives the input image signal from the input unit or the noise removal unit in response to a route control signal, reduces the image size of the input image signal when the image size of the input image signal is larger than the image size of the output image signal and stores the image signal with a reduced image size in a memory. The scaler maintains or magnifies the image size of the image signal stored in the memory and outputs the image signal with a maintained or magnified image size as the output image signal.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: February 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-youn Choi
  • Publication number: 20110294243
    Abstract: A photoresist composition suitable for forming a high-resolution pattern, and a method of forming a photoresist pattern using the same. The photoresist composition includes about 10 to about 45 parts by weight of an alkali soluble binder resin including a hydroxyl group, about 0.1 to about 5 parts by weight of a photo-acid generator, about 1 to about 5 parts by weight of a cross-linker that cross-links the alkali-soluble binder resin including the hydroxyl group, about 0.3 to about 3 parts by weight of a quinone diazide compound, and a remainder of a solvent.
    Type: Application
    Filed: April 22, 2011
    Publication date: December 1, 2011
    Inventors: Woo-Seok Jeon, Jeong-Min Park, Byung-Uk Kim, Hyoc-Min Youn, Ki-Hyuk Koo, Su-Youn Choi, Jin-Sun Kim
  • Patent number: 8024857
    Abstract: A substrate for a semiconductor package having a reinforcing member that prevents or minimizes distortions is presented. The substrate for the semiconductor package includes a substrate body, an insulation layer, and a reinforcing member. The substrate body has a first region having a plurality of chip mount regions, a second region disposed along a periphery of the first region, a circuit pattern disposed in each chip mount region and a dummy pattern disposed along the second region. The insulation layer covers the first and second regions and has an opening exposing some portion of each circuit pattern. The reinforcing member is disposed in the second region and prevents deflection of the substrate body.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: September 27, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Young Hy Jung, Jae Sung Oh, Ki Il Moon, Ki Chae Kim, Chan Sun Lee, Jin Ho Gwon, Jae Youn Choi
  • Patent number: 8023073
    Abstract: A liquid crystal display (“LCD”) includes forming only a ?/4 plate between a polarizer and a display panel and setting a direction of an absorption axis of the polarizer and a slow axis of the ?/4 plate, so that the LCD can have a smaller thickness and its fabrication cost can be reduced while having better or the same characteristics than an LCD using both ?/2 and ?/4 plates. In addition, in an ECB mode backlit LCD, transmittance, contrast ratio, and viewing angles can be enhanced by attaching both the ?/4 or ?/2 plate and allowing the absorption axis of the polarizer and the slow axis of the ?/4 and ?/2 plates to have predetermined angle relationships.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: September 20, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Woo Kim, Cheong-Haeng Lee, Won-Sang Park, Young-Joo Chang, Jun-Young Lee, Sung-Wook Kang, Jae-Young Lee, Hae-Young Yun, Jae-Ik Lim, Seung-Kyu Lee, Chang-Woo Shim, Yong-Suk Yeo, Ji-Youn Choi
  • Publication number: 20110097013
    Abstract: An image signal processor for processing an input image signal to output an output image signal includes an input unit receiving the input image signal, a noise removal unit removing noise from the input image signal, and a scaler reducing, maintaining or magnifying the image size of the input image signal. The scaler directly receives the input image signal from the input unit or the noise removal unit in response to a route control signal, reduces the image size of the input image signal when the image size of the input image signal is larger than the image size of the output image signal and stores the image signal with a reduced image size in a memory. The scaler maintains or magnifies the image size of the image signal stored in the memory and outputs the image signal with a maintained or magnified image size as the output image signal.
    Type: Application
    Filed: January 4, 2011
    Publication date: April 28, 2011
    Inventor: Ho-youn Choi
  • Patent number: D711033
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: August 12, 2014
    Assignee: Urban Design Idea Associates
    Inventor: Jeong Youn Choi