Patents by Inventor Ju-Hyung Lee

Ju-Hyung Lee 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: 20120163351
    Abstract: The present invention relates to a TDMA communication system using the position movement of a time slot. The TDMA communication system includes a TDMA network, a network central station, and terminals. The network central station includes a receiver for receiving transmission cycle information and time slot allocation requests from the terminals, a network central station controller for writing a degree of identification for the number of cases of time slot allocation according to the information transmission cycle, searching for an allocable optimum time slot, and withdrawing a time slot from a terminal which has finished communication, a time slot management unit for allocating a time slot to the terminal based on degree of identification for the number of cases of time slot allocation written by the network central station controller, and a transmitter for transmitting information about the allocated time slot to the terminal.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 28, 2012
    Inventors: Ju Hyung Lee, Sang Jun Kim, Man Yeob Lim, Joon Young Cho, Jong Sung Kim
  • Patent number: 8197779
    Abstract: The present invention relates to a catalyst for removing nitrogen oxides from an exhaust gas, a method for preparing the same and a method for removing nitrogen oxide in an exhaust gas using the same, and more particularly, to a catalyst for removing nitrogen oxides from the exhaust gas in which a ceramic fiber carrier is treated by hydrothermal reaction prior to washcoating to improve the hydrothermal stability of catalyst, a method for preparing the same and a method for removing nitrogen oxide in an exhaust gas using the same. The catalyst prepared according to the present invention has excellent hydrothermal stability and an activity of the catalyst remains for a long time. Further, by using this catalyst to remove nitrogen oxides in an exhaust gas, a removal ratio of the nitrogen oxides is greatly enhanced.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: June 12, 2012
    Assignee: LG Hausys, Ltd.
    Inventors: Ju-hyung Lee, In-sik Nam, Seong-moon Jung, Jong-sik Choi, Sun-joo Kim, Hyuk-jae Kwon, Young-jin Kim, Joon-hyun Baik
  • Publication number: 20120105296
    Abstract: A Multiple Input Multiple Output (MIMO) antenna apparatus is provided. The apparatus includes antenna devices that operate in respective resonant frequency bands. The apparatus also includes a main board comprising a device region and a ground region. The antenna devices are disposed on the device region. The ground plate is disposed on the ground region for grounding the antenna devices. The apparatus also includes at least one isolation device having a negatively charged line that protrudes from the ground plate and extends between the antenna devices on the device region, and a positively charged line that extends around the negatively charged line and connects the antenna devices to each other. The isolation device induces an electromagnetic wave that is generated by the antenna devices between the negative and positively charged lines to isolate the antenna devices from each other.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 3, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jae Young CHUNG, Dong-Jin KIM, Tae Sik YANG, Joong Ho JEONG, Ju Hyung LEE
  • Publication number: 20120100444
    Abstract: Provided is a fuel cell system using waste hydrogen generated from a sea water electrolyzing apparatus, the fuel cell system including: a sea water electrolyzing apparatus carrying out electrolysis of sea water used as cooling water in a nuclear power generation system to produce a chlorine-containing material; a hydrogen conveying line linked to one side of the sea water electrolyzing apparatus to convey waste hydrogen generated during the electrolysis; and a fuel cell linked to the hydrogen conveying line to generate electricity by using the waste hydrogen supplied from the hydrogen conveying line as fuel. The fuel cell system generates electricity by using waste hydrogen, which, otherwise, is totally discarded after being generated secondarily from the sea water electrolyzing apparatus, as fuel for the fuel cell.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 26, 2012
    Applicant: XFC INC.
    Inventors: Ju-Hyung Lee, Jong Won Choi, Suk-Won Cha, Ik Whang Chang
  • Publication number: 20120032359
    Abstract: The present invention relates to a porous ceramic structure, and a dehumidification/humidification apparatus comprising the same. More particularly, the present invention comprises: a porous ceramic humidifying medium having an inner circumferential surface and an outer circumferential surface; a dehumidifying medium which has an inner circumferential surface and an outer circumferential surface, and which is disposed in the porous ceramic humidifying medium; and a cutoff layer formed between the inner circumferential surface of the humidifying medium and the outer circumferential surface of the dehumidifying medium. The porous ceramic structure and the dehumidification/humidification apparatus comprising same according to the present invention can easily increase the humidifying and dehumidifying capacity, simplify a flow channel, and achieve a compact design.
    Type: Application
    Filed: April 20, 2010
    Publication date: February 9, 2012
    Applicant: LG HAUSYS, LTD.
    Inventors: Seong-Moon Jung, Ju- Hyung Lee, Jong-Sik Choi, Sun-Joo Kim, Ho-Yeon Lim, Joo-Hwan Seo, Moon-Suk Han
  • Publication number: 20120022798
    Abstract: The present invention provides a model equation for predicting the impact resistance of an ABS material, which has excellent properties, gloss, and stainability and thus can be widely used in vehicles, electricity and electronics, and miscellaneous applications. The model equation of the present invention provides high accuracy and reproducibility. The prediction technology can be used particularly to determine whether a material complies with the specification of vehicle components, to overcome the quality problems, and to prevent the production of defective products.
    Type: Application
    Filed: November 4, 2010
    Publication date: January 26, 2012
    Applicants: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY, HYUNDAI MOTOR COMPANY
    Inventors: Ju Hyung Lee, Min Chul Shin, Seok Jin Choi, Chang Kook Hong, Song Yi Bae
  • Publication number: 20110305617
    Abstract: The present invention relates to a catalyst including a ceramic structure containing porous ceramic paper and a catalyst component supported on the ceramic structure, and to a method for removing formaldehyde using the catalyst. The present invention provides a catalyst in which a structure made of ceramic paper having excellent characteristics in terms of porosity, specific surface area, and the like is used as a support for the catalyst component to maximize an effective area for reacting the supported catalyst component with a substance to be treated, thereby improving catalyst performance. The present invention also provides a method of using the catalyst.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 15, 2011
    Applicant: LG Hausys, LTD.
    Inventors: Ju-Hyung Lee, In-Sik Nam, Seong-Moon Jung, Jong-Sik Choi, Sun-Joo Kim, Ho-Yeon Lim, Joo-Hwan Seo
  • Publication number: 20110165049
    Abstract: The present invention relates to a catalyst for removal of nitrogen oxides from exhaust gas, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same, and more particularly, to a catalyst for removal of nitrogen oxides from exhaust gas in which a ceramic fiber carrier is hydrothermal-treated prior to washcoating to improve the hydrothermal stability of catalyst, a method of preparing the same and a method of removing nitrogen oxide in an exhaust gas using the same. The catalyst prepared according to the present invention has excellent hydrothermal stability and an activity of the catalyst remains for a long time. Further, by using this catalyst to remove nitrogen oxides in an exhaust gas, a removal ratio of the nitrogen oxides is improved more.
    Type: Application
    Filed: January 8, 2009
    Publication date: July 7, 2011
    Inventors: Ju-Hyung Lee, In-sik Nam, Seong-moon Jung, Jong-sik Choi, Sun-joo Kim, Hyuk-Jae Kwon, Young-jin Kim, Joon-hyun Baik
  • Publication number: 20110163044
    Abstract: A ceramic structure for water treatment, a water treatment apparatus and method are provided. Immersion efficiency of a photo catalyst and a specific surface area of the immersed photo catalyst can be improved using a ceramic medium including a ceramic paper prepared of a ceramic fiber. Accordingly, it is possible to provide the water treatment apparatus and method capable of increasing decomposition efficiency of contaminated materials due to irradiation of ultraviolet light, and so on, enabling continuous purification treatment, and remarkably reducing preparation, management and water treatment expenses.
    Type: Application
    Filed: December 23, 2010
    Publication date: July 7, 2011
    Applicant: LG HAUSYS, LTD.
    Inventors: Moonsuk HAN, Ju-Hyung Lee, Seongmoon Jung
  • Publication number: 20100255987
    Abstract: A tile using an activated carbon, which is excellent as a formaldehyde absorbent, and a preparation process thereof are disclosed. The effect of activated carbon on absorbing formaldehyde is maximized by the activated carbon-in-core structure, in which the problem of activated carbon that is easily oxidized during a heat treatment may be overcome.
    Type: Application
    Filed: October 2, 2007
    Publication date: October 7, 2010
    Applicant: LG HAUSYS, LTD.
    Inventors: Jong-Sik Choi, Ju-Hyung Lee, Seong-Moon Jung, Sun-Joo Kim
  • Publication number: 20100159358
    Abstract: A separator for a fuel cell is provided. The separator comprises a flow path member and a base separator. The flow path member is made of a graphite foil and has a flow path through which fluids pass. The base separator has a seating recess formed on the surface thereof. The flow path member is mounted in the seating recess. The flow path is formed by pressing the graphite foil. The separator can be produced at reduced processing cost in a short processing time.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 24, 2010
    Inventors: Ju-Hyung Lee, Yong-Shin Hwang, Suk-Won Cha, Jong-Won Choi
  • Publication number: 20100115899
    Abstract: The present invention relates to a ceramic filter comprising clay and a process for preparing the same. More specifically, the present invention relates to the ceramic filter, including wave- shaped ceramic paper and plate-shaped paper, having improved efficiency and performance that may optimize the process of coating and calcining inorganic binder by forming an outer wall thereon, using clay, and thus increase insulation effect and mechanical strength represented by the clay layer, and the process for preparing thereof.
    Type: Application
    Filed: April 2, 2007
    Publication date: May 13, 2010
    Applicant: LG Chem, Ltd
    Inventors: Ju-Hyung Lee, Jong-Sik Choi, Hoon Ahn, Sun-Joo Kim, Seong-Moon Jung
  • Publication number: 20100095891
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Application
    Filed: January 7, 2010
    Publication date: April 22, 2010
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Patent number: 7654224
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: February 2, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Publication number: 20090145360
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Application
    Filed: February 17, 2009
    Publication date: June 11, 2009
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Patent number: 7526083
    Abstract: Disclosed is a ground connecting apparatus for a mobile terminal, in which grounds formed on the terminal are directly or indirectly connected so as to reduce an SAR value, thereby adjusting a connection length of the grounds.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: April 28, 2009
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Seon-Kyeng Kim, Wan-Jin Choi, Ju-Hyung Lee, Jung-Ho Park
  • Patent number: 7500445
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 10, 2009
    Assignee: Applied Materials, Inc.
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Patent number: 7465357
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: December 16, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Patent number: 7464717
    Abstract: The present invention is a method and apparatus for cleaning a chemical vapor deposition (CVD) chamber using cleaning gas energized to a plasma in a gas mixing volume separated by an electrode from a reaction volume of the chamber. In one embodiment, a source of RF power is coupled to a lid of the chamber, while a switch is used to couple a showerhead to ground terminals or the source of RF power.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: December 16, 2008
    Assignee: Applied Materials, Inc.
    Inventors: Maosheng Zhao, Juan Carlos Rocha-Alvarez, Inna Shmurun, Soova Sen, Mao D. Lim, Shankar Venkataraman, Ju-Hyung Lee
  • Patent number: 7403458
    Abstract: A compatible optical pickup, including first and second light sources for emitting lights with different wavelengths and first and second photodetectors for detecting an information signal and/or an error signal, and a method of detecting the amount of output light using the compatible optical pickup. The first and second photodetectors monitor the amount of light output from the second and first light sources respectively such that no extra front photodetectors are required. Thus, the number of optical component parts included in the optical pickup can be reduced, thereby lowering the manufacturing costs for the optical pickup. Also, there is no need to secure a space in a base where a front photodetector is to be installed, so the base is simplified. Thus, inferior moldings are reduced, and the durability of a mold can be prolonged.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: July 22, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-hwan Lim, Ju-hyung Lee, Pyong-yong Seong, Eun-goo Kim, Chun-gi Kim, Kyoung-hwan Park