Patents by Inventor Tae Ahn

Tae Ahn 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).

  • DUAL-MODE PIXELS INCLUDING EMISSIVE AND REFLECTIVE DEVICES, AND DUAL-MODE DISPLAY USING THE PIXELS
    Publication number: 20160056216
    Abstract: A dual-mode display including a substrate and a multiple sub-pixels on the substrate, in which each sub-pixel includes, a color selection reflector, and an optical shutter disposed on the color selection reflector, and an emissive devised disposed on the shutter, wherein the emissive device includes a cathode and an anode, and the cathode and the anode include a carbon-based material including graphene sheets, graphene flakes, and graphene platelets, and a binary or ternary transparent conductive oxide including indium oxide, tin oxide, and zinc oxide.
    Type: Application
    Filed: November 3, 2015
    Publication date: February 25, 2016
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jong Tae LIM, Joon Tae AHN, Jeong Ik LEE, Hye Yong CHU, Byoung Gon YU, Jonghee LEE, Jun-Han HAN, Jaehyun MOON
  • Dual-mode pixels including emissive and reflective devices, and dual-mode display using the pixels
    Patent number: 9209232
    Abstract: Provided is a dual-mode display including a substrate and a plurality of sub-pixels on the substrate, in which each sub-pixel includes an emissive device, a color selection reflector disposed on one side of the emissive device, and an optical shutter disposed on another side of the emissive device, wherein the emissive device includes a cathode and an anode, and the cathode and the anode include a carbon-based material including graphene sheets, graphene flakes, and graphene platelets, and a binary or ternary transparent conductive oxide including indium oxide, tin oxide, and zinc oxide.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: December 8, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jong Tae Lim, Joon Tae Ahn, Jeong Ik Lee, Hye Yong Chu, Byoung Gon Yu, Jonghee Lee, Jun-Han Han, Jaehyun Moon
  • Steel wire with high strength for cold forging to improve service life of mold and method of manufacturing the same
    Patent number: 9206489
    Abstract: A method of manufacturing high strength steel wire for cold forging containing 0.15-0.40 wt % of C, less than 1.5 wt % of Si, 0.30-2.0 wt % of Mn, less than 0.03 wt % of P, and less than 0.03 wt % of S. After initial cold-drawing, the wire rod is heated in a series of high frequency induction heating devices over the Ac3 transformation point for 30-90 seconds. The wire rod is then rapidly cooled and tempered at a temperature of from 500° C. to the A1 transformation point for 30-90 seconds. The wire rod is then cooled to achieve a tensile strength of 1,100-1, 400 MPa. The wire rod is then cold-drawn at an area reduction rate in excess of 25% and up to 40% to yield a tensile strength of 1,200-1,600 MPa, with improved service life of the mold.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 8, 2015
    Assignee: Samhwa Steel Co., Ltd.
    Inventor: Soon-Tae Ahn
  • RECHARGEABLE LITHIUM BATTERY
    Publication number: 20150288033
    Abstract: A rechargeable lithium battery includes a positive electrode including a positive active material, a negative electrode and an electrolyte including a lithium salt, an organic solvent and an additive. The positive active material includes a compound represented by Chemical Formula 1, and the additive includes about 0.5 to about 2 parts by weight of lithium difluorophosphate (LiPO2F2) and about 0.5 to about 3 parts by weight of vinylene carbonate, based on 100 parts by weight of the organic solvent. LiaNixCoyMnzO2.
    Type: Application
    Filed: February 24, 2015
    Publication date: October 8, 2015
    Inventors: In-Hyun Lee, Su-Jin Yoon, Tae-Ahn Kim, Seung-Ju Oh
  • THERMOPLASTIC POLYESTER ELASTOMER RESIN COMPOSITION AND MOLDING ARTICLES COMPRISING THE SAME
    Publication number: 20150267049
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl-modified ethylene-octene copolymer resin, as a chain extension/hydrolysis resistance agent for blown and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance, melt viscosity and parison stability, and in particular, exhibits superior blow molding, causes no gelation, and reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, thereby making a balance between physical properties, molding property and operation environments.
    Type: Application
    Filed: June 18, 2014
    Publication date: September 24, 2015
    Inventors: Ho Dong Kim, Sang Wook Na, A Young Hur, Soo Min Lee, Sung Tae Ahn
  • FLY WHEEL
    Publication number: 20150260196
    Abstract: Provided is a fly wheel, including: a fly wheel body provided with a receiving part in which air is filled and mounted on driving shaft; a blade radially coupled to the fly wheel body, including a ventilation passage formed therein to be communicated with the receiving part and a puncturing part formed on an outer race thereof to be communicated with the ventilation passage, and generating thrust by discharging the air filled in the receiving part to the puncturing part at the time of rotating the driving shaft; and a check valve installed on the fly wheel body and being opened and closed by a pressure difference between the receiving part and the outside.
    Type: Application
    Filed: July 3, 2013
    Publication date: September 17, 2015
    Inventors: Sang Tae AHN, Chun Young AHN
  • SEMICONDUCTOR MEMORY DEVICE AND SYSTEM INCLUDING THE SAME
    Publication number: 20150221385
    Abstract: A semiconductor memory device includes a plurality of normal memory cells stacked over a substrate and coupled in series with each other, a plurality of selection transistors coupled in series, and one or more dummy memory cells coupled between the plurality of normal memory cells and the plurality of selection transistors, wherein the plurality of selection transistors includes first and second selection transistors, and the first selection transistor is adjacent to the dummy memory cells, and has a lower threshold voltage than the second selection transistor.
    Type: Application
    Filed: July 16, 2014
    Publication date: August 6, 2015
    Inventors: Sang Tae AHN, Gyu Seog CHO
  • POLYCARBONATE RESIN COMPOSITION
    Publication number: 20150218371
    Abstract: The present invention relates to a polycarbonate resin composition which has low warpage property and excellent flowability and appearance properties, and exhibits more improved toughness. The polycarbonate resin composition includes 35 to 60% by weight of a polycarbonate resin; 30 to 55% by weight of a glass fiber having a square or oval cross-sectional shape in the direction perpendicular to the longitudinal direction, in which its aspect ratio of the following Formula 1 is 50 to 200; 1 to 10% by weight of an impact modifier having a core-shell structure; 1 to 10% by weight of an ethylene-(meth)acrylate-based copolymer; and 1 to 10% by weight of a rheology modifier containing a thermoplastic polyester-based polymer or a phosphate ester-based compound.
    Type: Application
    Filed: October 4, 2013
    Publication date: August 6, 2015
    Applicant: LG CHEM, LTD
    Inventors: Ryul Lee, Su Kyoung Lee, Min Ji Kim, Jong Kuk Choi, Sung Tae Ahn
  • METHODS OF MANUFACTURING ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20150214485
    Abstract: Provided is a method of manufacturing an organic light-emitting device including a graphene layer. The method of manufacturing an organic light-emitting device according to the present invention may include providing a graphene donor unit including a patterned graphene layer, providing a device unit, and attaching the graphene layer of the graphene donor unit to an organic part. The device unit may include a substrate, a lower electrode, and the organic part which are sequentially stacked, and the organic part may include a dopant. The graphene donor unit may include the graphene layer, a release layer, and an elastic stamp layer which are sequentially stacked.
    Type: Application
    Filed: August 1, 2014
    Publication date: July 30, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong Tae LIM, Jeong Ik LEE, Hye Yong CHU, Joon Tae AHN, Jonghee LEE, Jun-Han HAN, Ji-Young OH, Byoung Gon YU, Jaehyun MOON, Nam Sung CHO
  • Device for recording and playing contents, server for managing content location information, information recording medium, method for managing content information
    Patent number: 9077859
    Abstract: A device for recording and playing contents, a sever for managing content location information, an information recording medium, a method for managing content information, and a recording medium for the method are disclosed. The recording/playing device includes a communication interface unit configured to interface data transmission and reception with at least one external resource connected to a network and a controller configured to receive a request for a content, search for an external resource recording the requested content based on content identification information and control receiving the content from the searched external resource.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: July 7, 2015
    Assignee: LG Electronics Inc.
    Inventor: Kyu Tae Ahn
  • Non-halogen flame retardant and high rigidity polycarbonate resin composition
    Patent number: 9056978
    Abstract: A non-halogen flame retardant and high rigidity polycarbonate resin composition is disclosed. The non-halogen flame retardant and high rigidity polycarbonate resin composition has excellent flame retardancy and rigidity by overcoming a conventional problem such as poor rigidity occurred, upon adding a flame retardant agent in polycarbonate resin composition reinforced with a glass fiber having improved rigidity such as flexibility and surface smoothness etc., imposed by the use of the glass fiber. The polycarbonate resin composition has excellent fluidity, appearance surface quality and flexibility, together with high impact resistance and toughness, and also flame retardancy.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 16, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sun Mo Son, Ryul Lee, Sung Ho Lee, Sung Tae Ahn, Su Kyoung Lee, Jong Wan Kim
  • DUAL-MODE PIXELS INCLUDING EMISSIVE AND REFLECTIVE DEVICES, AND DUAL-MODE DISPLAY USING THE PIXELS
    Publication number: 20150155340
    Abstract: Provided is a dual-mode display including a substrate and a plurality of sub-pixels on the substrate, in which each sub-pixel includes an emissive device, a color selection reflector disposed on one side of the emissive device, and an optical shutter disposed on another side of the emissive device, wherein the emissive device includes a cathode and an anode, and the cathode and the anode include a carbon-based material including graphene sheets, graphene flakes, and graphene platelets, and a binary or ternary transparent conductive oxide including indium oxide, tin oxide, and zinc oxide.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 4, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jong Tae LIM, Joon Tae AHN, Jeong Ik LEE, Hye Yong CHU, Byoung Gon YU, Jonghee LEE, Jun-Han HAN, Jaehyun MOON
  • Methods of manufacturing semiconductor device
    Patent number: 8999784
    Abstract: A method of manufacturing a semiconductor device includes forming first auxiliary patterns, alternately forming first material layers and second material layers on the sidewalls of the first auxiliary patterns so that a gap region between the first auxiliary patterns adjacent to each other is filled, removing the second material layers, and forming charge storage layers in respective regions from which the second material layers have been removed.
    Type: Grant
    Filed: September 1, 2012
    Date of Patent: April 7, 2015
    Assignee: SK Hynix Inc.
    Inventor: Sang Tae Ahn
  • Spinal stabilization device
    Patent number: 8979900
    Abstract: A flexible connection unit for use in a spinal fixation device that includes: a longitudinal member having first and second ends and a flexible member interposed between the first and second ends, at least one of the first end and second end configured to be engaged by a first bone securing member; and at least one spacer located between the first and second ends, the spacer comprising a resilient element and a ring element encircling at least a portion of the resilient element, wherein the ring element is configured to be engaged by a second bone securing member.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: March 17, 2015
    Assignee: DePuy Synthes Products, LLC
    Inventors: Tae-ahn Jahng, Jason Yim, Brian Scott Bowman
  • OPTICAL FIBER DRAWING APPARATUS HAVING SIMPLE STRUCTURE AND OPTICAL FIBER DRAWING METHOD USING THE SAME
    Publication number: 20150068252
    Abstract: Provided is an optical fiber drawing apparatus and optical fiber drawing method using the same. The apparatus may include a crucible accommodating core and clad sources and having a bottom hole through which the core and clad sources pass, and a plug disposed under the crucible, the plug passing through the bottom hole. The plug may include a bottom plug disposed under the crucible to close the bottom hole, and a first upper plug disposed on the bottom plug to pass through the bottom hole.
    Type: Application
    Filed: June 2, 2014
    Publication date: March 12, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hong-Seok SEO, Joon Tae AHN, Bong Je PARK, Hee Rak CHOI
  • Method and apparatus for flexible fixation of a spine
    Patent number: 8968366
    Abstract: A flexible connection unit for spinal stabilization, including: a first end portion having a first longitudinal channel and configured to be coupled to a first securing member secured to a patient's spine; a second end portion having a second longitudinal channel and configured to be coupled to a second securing member secured to the patient's spine; and a flexible wire extending through at least a portion of the first and second longitudinal channels and flexibly linking the first and second end portions.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: March 3, 2015
    Assignee: DePuy Synthes Products, LLC
    Inventor: Tae-Ahn Jahng
  • Electrolyte for rechargeable lithium battery and rechargeable lithium battery including the same
    Patent number: 8945776
    Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same, the electrolyte including a lithium salt, a silylborate-based compound, an anhydride component, and a non-aqueous organic solvent.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: February 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae-Ahn Kim, Mi-Hyeun Oh, Na-Rae Won, Sung-Hoon Kim
  • Dual-mode pixel including emissive and reflective devices and dual-mode display with the same
    Patent number: 8901548
    Abstract: Provided is a dual-mode display including a substrate, and a plurality of sub pixels on the substrate. Each of the sub pixels may include an emissive device, a reflective optical filter provided on a surface of the emissive device, and an optical shutter provided on other surface of the emissive device.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: December 2, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joon Tae Ahn, Jeong Ik Lee, Jaehyun Moon, Seung Koo Park, Nam Sung Cho, Doo-Hee Cho, Jun-Han Han, Joo Hyun Hwang, Jin Wook Shin, Jong Tae Lim, Chul Woong Joo, Jin Woo Huh, Chi-Sun Hwang, Hojun Ryu, Jae Bon Koo, Hye Yong Chu
  • Soft recoil system and cannon having the same
    Patent number: 8863636
    Abstract: Disclosed are a soft recoil system and a cannon having the same. The soft recoil system includes: a cannon barrel returning device mounted to a recoil device for absorbing a recoil force occurring when ammunition is fired, and configured to backward press a breech ring, such that the cannon barrel is fixed to a preset position; a cannon barrel fixing device installed at the recoil device, and configured to fix the cannon barrel when the cannon barrel returns to the fixed position; and a forward momentum generator connected to the recoil device and the breech ring, respectively, configured to forward move the cannon barrel by applying a force to the breech ring, such that the ammunition is fired while the cannon barrel forward moves, and configured to reduce a recoil force by partially attenuating recoil momentum resulting from the firing of the ammunition, by forward momentum.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 21, 2014
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Chang-Ki Cho, Sang-Bae Jun
  • Hybrid light emitting device having a capping layer
    Patent number: 8860050
    Abstract: Provided is a hybrid light emitting device. The hybrid light emitting device may include the first light emitting part on the substrate, the capping layer, and the second light emitting part. The first light emitting part may emit light having a first wavelength, and the first light emitting part may include a first electrode, an organic emitting layer, and a second electrode sequentially disposed. A second light emitting part may generate light having a second wavelength. A capping layer may be disposed between the organic emitting layer and the second light emitting part. The capping layer may reflect light having the first wavelength and transmit light having the second wavelength.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 14, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun-Han Han, Jeong Ik Lee, Chul Woong Joo, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Joon Tae Ahn, Boong Joon Lee, Nam Sung Cho, Doo-Hee Cho, Joo Hyun Hwang, Jin Wook Shin, Hye Yong Chu