Patents by Inventor Won-sung Choi

Won-sung 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: 20140356736
    Abstract: A positive electrode for a lithium battery including a protected negative electrode containing a lithium metal or a lithium alloy, wherein the positive electrode contains a positive electrode active material, a polyoxometalate compound, and a conductive material. Also provided is a lithium battery including the positive electrode.
    Type: Application
    Filed: April 9, 2014
    Publication date: December 4, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Won-sung CHOI, Dong-min IM, Victor ROEV, Young-gyoon RYU, Dong-joon LEE, Seung-sik HWANG
  • Publication number: 20140234733
    Abstract: An air battery cathode including an organic-inorganic composite material including lyophobic nanopores, the organic-inorganic composite material including a porous metal oxide, and a lyophobic layer on a surface of a pore of the porous metal oxide and having a contact angle of greater than about 90°; and a binder. Also a lithium air battery including the cathode, and a method of manufacture the cathode.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 21, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Victor ROEV, Dong-min IM, Sang-bok MA, Won-sung CHOI, Min-sik PARK, Dong-joon LEE
  • Publication number: 20140178775
    Abstract: A protected anode for lithium air batteries and a lithium air battery including the protected anode are provided. The protected anode includes: an anode intercalates and deintercalates lithium ions; a lithium ion-conductive solid electrolyte membrane; and a polymer electrolyte disposed between the anode and the ion-conductive solid electrolyte membrane, wherein the polymer electrolyte includes a lithium ion-conductive polymer, a compound represented by Formula 1 having a number average molecular weight from about 300 to about 1,000, and a lithium salt, and an amount of the compound of Formula 1 is from about 10 parts to about 25 parts by weight based on 100 parts by weight of the polymer electrolyte: In Formula 1, R1 to R6, and n are the same as defined in the specification.
    Type: Application
    Filed: April 25, 2013
    Publication date: June 26, 2014
    Inventors: Dong-joon LEE, Dong-min IM, Victor ROEV, Sang-bok MA, Min-sik PARK, Osamu YAMAMOTO, Nobuyuki IMANISHI, Won-sung CHOI, Yasuo TAKEDA
  • Publication number: 20140178777
    Abstract: A protected anode including: an anode including lithium or capable of reversibly incorporating lithium ions; and a lithium ion-conductive protective layer on the anode and including a ceramic composite represented by Formula 1: Li1+aAlbGe2?cMdP3+eO12+f??Formula 1 wherein M is at least one element selected from titanium (Ti), zirconium (Zr), and germanium (Ge), 0?a?1, 0?b?1, 0?c?1, 0?d?0.5, 0?e?0.1, and 0?f?1.
    Type: Application
    Filed: December 15, 2013
    Publication date: June 26, 2014
    Applicant: National University Corporation Mie University
    Inventors: Dong-joon LEE, Dong-min IM, Victor ROEV, Sang-bok MA, Min-sik PARK, Osamu YAMAMOTO, Nobuyuki IMANISHI, Won-sung CHOI, Yasuo TAKEDA
  • Publication number: 20140084849
    Abstract: The apparatus of charging a rechargeable battery includes a voltage detector which detects a voltage value between terminals of a rechargeable battery, a current generator which generates current for charging the rechargeable battery and outputs the generated current to the terminals of the rechargeable battery, and a controller which controls the current generator based on the voltage value detected by the voltage detector. The current generator outputs a first current for which a direction thereof between the terminals of the rechargeable battery is constant, in a charging period of the rechargeable battery, wherein the first current comprises direct current, and a second current for which a direction thereof between the terminals of the rechargeable battery is periodically reversed, in an intermittent period of the rechargeable battery.
    Type: Application
    Filed: April 24, 2013
    Publication date: March 27, 2014
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Dong-joon LEE, Dong-min IM, Victor ROEV, Sang-bok MA, Won-sung CHOI, Min-sik PARK
  • Publication number: 20140072881
    Abstract: A lithium battery including a negative electrode including a lithium metal or a lithium alloy; a positive electrode; and a polymer gel electrolyte contacting the negative electrode, wherein the polymer gel electrolyte has an ionic conductivity of about 10?3 S/cm or greater, a lithium ion transference number of about 0.15 or greater, and a lithium ion mobility of about 10?6 cm2/V×sec or greater, wherein the polymer gel electrolyte includes a lithium salt, a polymer capable of forming a complex with the lithium salt, an insulating inorganic filler, and an organic solvent, wherein the organic solvent is inert with respect to the lithium metal, wherein an anionic radius of the lithium salt is about 2.5 Angstroms or greater, and wherein a molecular weight of the lithium salt is about 145 or greater.
    Type: Application
    Filed: August 26, 2013
    Publication date: March 13, 2014
    Applicants: NATIONAL UNIVERSITY CORPORATION MIE UNIVERSITY, SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-sik PARK, Dong-joon LEE, Sang-bok MA, Dong-min IM, Won-sung CHOI, Osamu YAMAMOTO, Nobuyuki IMANISHI
  • Patent number: 6740166
    Abstract: A semiconductor thin film deposition apparatus having at least one reactor in which a wafer is received, a gas supply portion for supplying a reaction gas or inert gas to the reactor, and an exhaust pump for exhausting gas from the reactor, characterized in that the improvement comprises an ozone supply portion for generating ozone as a gas that reacts with the reaction gas, and for supplying the ozone to the reactor.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: May 25, 2004
    Assignee: IPS, Ltd.
    Inventor: Won-sung Choi
  • Publication number: 20020134307
    Abstract: A semiconductor thin film deposition apparatus having at least one reactor in which a wafer is received, a gas supply portion for supplying a reaction gas or inert gas to the reactor, and an exhaust pump for exhausting gas from the reactor, characterized in that the improvement comprises an ozone supply portion for generating ozone as a gas that reacts with the reaction gas, and for supplying the ozone to the reactor.
    Type: Application
    Filed: November 30, 2000
    Publication date: September 26, 2002
    Inventor: Won-Sung Choi
  • Patent number: 6231672
    Abstract: An apparatus for depositing thin films of a semiconductor device.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: May 15, 2001
    Assignee: IPS Ltd.
    Inventors: Won-sung Choi, Sang-jin Lee
  • Patent number: 6183563
    Abstract: An apparatus for depositing thin films on a semiconductor wafer. The thin film deposition apparatus includes a reactor block receiving a semiconductor wafer; a shower head plate covering the reactor block to maintain the internal pressure of the reactor block at a predetermined level; a reaction gas supply connected to the shower head plate, for supplying reaction gases; an inert gas supply connected to the shower head plate, for supplying an inert gas; an exhaust portion connected to the reactor block, for exhausting the gases out of the reactor block; and a diffusion plate installed in the shower head plate, having a plurality of passages connected to the source of inert gas supply, a plurality of nozzles connected to the passages, the inert gas sprayed through the nozzles lowering a wall of inert gas along the inner wall of the reactor block, and a plurality of spray holes, the reaction gases spread over the wafer through the spray holes.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: February 6, 2001
    Assignee: IPS Ltd.
    Inventors: Won-sung Choi, Kyu-un Oh