Patents by Inventor Yong CHA

Yong CHA 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: 20110187406
    Abstract: A semiconductor chip including a termination resistance and a semiconductor module including the semiconductor chip.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 4, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-yong Cha, Sun-won Kang
  • Publication number: 20110178332
    Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a tungsten or tungsten oxide attached to the composite metal oxide, wherein an atomic molar ratio of the tungsten attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 21, 2011
    Applicants: LG CHEM, LTD, SNU R&DB FOUNDATION
    Inventors: Jin-Do Kim, Kyong-Yong Cha, Bu-Young Jo, Sang-Heup Moon
  • Publication number: 20110178333
    Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a palladium or palladium oxide attached to the composite metal oxide, wherein an atomic molar ratio of the palladium attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 21, 2011
    Applicants: LG CHEM, LTD., SNU R&DB FOUNDATION
    Inventors: Jin-Do Kim, Kyong-Yong Cha, Sang-Seop Kum, Sang-Heup Moon
  • Publication number: 20110060158
    Abstract: The present invention provides a method for preparing (meth)acrylate by esterification reaction of reactants containing (meth)acrylic acid and alcohol in the presence of a catalyst, the preparation method for (meth)acrylate is characterized in that a hydrazine compound or derivative thereof is put into an esterification reactor; and (meth)acrylate prepared by the same. The present invention effectively prevents impurities generated by aldehyde that is contained in the raw material (meth)acrylic acid from remaining in a production apparatus and the catalyst, so that the process for producing (meth)acrylate proceeds smoothly.
    Type: Application
    Filed: August 10, 2010
    Publication date: March 10, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-Kyu Kim, Dong-Hyun Cho, Jun-Seok Ko, Kyong-Yong Cha, Se-Won Baek, Dong-Hyun Woo
  • Publication number: 20100324175
    Abstract: Disclosed are a polymer for ultra-high strength concrete admixture and a method for preparing the same, more specifically, a polymer for ultra-high strength concrete admixture prepared by polymerizing two or more copolymers based on unsaturated organic monomers having urethane derivatives, and and a method for preparing the same. Also, the concrete admixture comprising the polymer exhibits high water-reducing ability, thus improving workability and strength of the concrete composition. In addition, the concrete admixture exhibits defoaming capability, thus enabling easy control of air amount of the concrete composition without using any defoaming agent.
    Type: Application
    Filed: June 22, 2010
    Publication date: December 23, 2010
    Inventors: Cheol Yong CHA, Kwang Young PARK, Young Gook CHOI, Oh Jin KIM, Myung Wook JANG
  • Patent number: 7854782
    Abstract: A vacuum cleaner includes a vacuum cleaner body, a cyclone unit which is mounted at the vacuum cleaner body, and separates dust from drawn air, a dust separating unit which is engaged with a lower end of the cyclone unit, said dust separating unit being configured to collect separated dust, said dust separating unit being detachable from the cyclone, and said dust separating unit comprising a compressing plate compressing the collected dust; and a driving unit which is disposed at a lower end of the dust separating unit, said driving unit being configured to ascend and descend the dust separating unit to be detachably connected to the cyclone unit and drives the compressing plate.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 21, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-Keun Oh, Seung-Yong Cha, Min-Ha Kim, Hyoun-Soo Kim, Hyun-Ju Lee
  • Publication number: 20100263160
    Abstract: A suction body for a cleaner is provided that can generate electric energy by itself using air drawn in by the cleaner. A suction body includes an ultraviolet sterilizer that radiates ultraviolet rays toward a surface to be cleaned and sterilizes the surface to be cleaned, a lighting device that emits light, a displaying device that displays a cleaning state, a fan that rotates by drawn-in air, and a generator that converts rotary energy of the fan into electric energy so as to supply the electric energy to the ultraviolet sterilizer, the lighting device, and the displaying device.
    Type: Application
    Filed: March 12, 2010
    Publication date: October 21, 2010
    Inventors: Jang-Keun Oh, Hyun-Ju Lee, Seung-Yong Cha
  • Patent number: 7799641
    Abstract: A method for forming a semiconductor device having recess channel includes forming a hard mask film pattern for exposing first regions for forming the trenches on a semiconductor substrate; forming first trenches by a first etching process using the hard mask film pattern as a mask, and removing the hard mask film pattern; forming a barrier film on the semiconductor substrate including the first trenches; forming an ion implantation mask film for exposing the first trenches on the barrier film; forming an ion implantation region in the semiconductor substrate below the first trenches using the ion implantation mask film and the barrier film; forming bulb-shaped second trenches by a second etching process using the ion implantation mask film and the barrier film as a mask, so that bulb-type trenches for recess channels, each including the first trench and the second trench, are formed; and removing the ion implantation mask film and the barrier film.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: September 21, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jin Yul Lee, Min Ho Ha, Seon Yong Cha
  • Patent number: 7794515
    Abstract: A cyclone separating apparatus for a vacuum cleaner includes a first cyclone with an air entrance disposed on a lower portion of the first cyclone and an air exit disposed at an upper portion of the first cyclone; a first contaminants chamber substantially enclosing the first cyclone to collect contaminants discharged from the first cyclone; a plurality of second cyclones above the first cyclone, the plurality of second cyclones being substantially perpendicular to a center axis of the first cyclone; and a second contaminants chamber disposed outside the first contaminants chamber to collect contaminants discharged from the plurality of second cyclones.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: September 14, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-keun Oh, Seung-yong Cha
  • Patent number: 7789923
    Abstract: A dust-collecting apparatus of a vacuum cleaner includes a first dust-collecting unit, a second dust-collecting unit, and a dust receptacle. The second dust-collecting unit is adapted to be mounted to one side of the first dust-collecting unit. The dust receptacle is adapted to be mounted on a lower part of both the first and the second dust-collecting units, and the dust receptacle is adapted to store dust separated by the first and the second dust-collecting units. The first and second dust-collecting units are arranged so that air discharged from the first dust-collecting unit enters the second dust-collecting unit.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: September 7, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-keun Oh, Seung-yong Cha
  • Patent number: 7780752
    Abstract: A cyclone dust-separating apparatus of a vacuum cleaner is disclosed. The cyclone dust-separating apparatus includes a cyclone unit having a cyclone chamber to whirl first air drawn in from the outside thus to separate dust or dirt therefrom, a filter unit disposed in a filtering chamber located in a downstream of the cyclone unit and having a filter to filter dust or dirt from the first air, a cleaning unit to brush away the dust or dirt accumulated in the filter by using second air drawn in from the outside, and a dust collecting unit to collect and store the dust or dirt separated from the first air by the cyclone chamber and the dust or dirt brushed away from the filter by the cleaning unit.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: August 24, 2010
    Assignee: Samsung Gwangju Electronics co., Ltd
    Inventors: Seung-Yong Cha, Jang-Keun Oh
  • Patent number: 7774897
    Abstract: The vacuum cleaner that includes a fragrant odor generating apparatus is provided. The fragrant odor generating apparatus is mounted to a discharge port of a grill member housed in a main cleaner body, to discharge an air freshener to an air being discharged through the discharge port after air containing dust is drawn in from a surface being cleaned and dust is separated from the drawn-in air. The fragrant odor generating apparatus includes a housing comprising a first air passing hole in fluid communication with the discharge port, and a second air passing hole in fluid communication with outside, an outer cover member pivotably mounted to the housing to selectively open and close the second air passing hole, and the air freshener containing a fragrant agent.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 17, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-Keun Oh, Seung-Yong Cha
  • Publication number: 20100203696
    Abstract: A semiconductor device and a method for manufacturing the same are disclosed. The semiconductor device suitable for preventing a threshold voltage of a recess gate from decreasing due to a voltage of an adjacent storage node comprises a semiconductor substrate having an active region which includes a gate area and a storage node contact area and is recess in the gate area; a device isolation structure formed in the semiconductor substrate to define the active region and having a shield layer therein; a recess gate formed in the gate area of the semiconductor substrate; and a storage node formed to be connected with the storage node contact area of the active region.
    Type: Application
    Filed: April 21, 2010
    Publication date: August 12, 2010
    Applicant: Hynix Semiconductor Inc.
    Inventor: Seon Yong CHA
  • Publication number: 20100192776
    Abstract: A dust separating apparatus is provided. The dust separating apparatus draws in an external air stream and separates dust particles from the drawn air stream. The dust separating apparatus may include a dust collecting space to store dust particles and a driving means to increase or decrease the dust collecting space. Accordingly, a user may adjust the capacity of the dust collecting space as desired.
    Type: Application
    Filed: November 21, 2009
    Publication date: August 5, 2010
    Inventors: Jang-keun Oh, Byung-Jo Lee, Seung-Yong Cha
  • Patent number: 7749296
    Abstract: A cyclone dust-separating apparatus is disclosed. The dust-separating apparatus includes a cyclone unit having an air inlet and an air outlet so as to remove dust or dirt from air, and a dust bin joined to a bottom end of the cyclone unit so as to store the dust or dirt separated by the cyclone unit. The cyclone unit is installed in such a manner that a longitudinal axis thereof is substantially horizontally arranged. The dust bin is installed in such a manner that a longitudinal axis thereof is substantially perpendicular to the longitudinal axis of the cyclone unit. The dust bin has an air outflow passage connected with the air outlet, so that air discharged from the cyclone unit passes through the dust bin and then discharges in a bottom end direction of the dust bin.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: July 6, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jung-gyun Han, Jang-keun Oh, Seung-yong Cha
  • Publication number: 20100162517
    Abstract: A vacuum cleaner having a detachable dust separating unit is disclosed. The vacuum cleaner includes a cleaner body having a first opening to open a portion of a first surface thereof and a second opening to open a portion of a second surface thereof, a dust separating unit to separate a dust from an air, and a seating part formed in the cleaner body to detachably mount the dust separating unit on the cleaner body. The dust separating unit forms a portion of an outward appearance of the cleaner body while closing up the first and the second openings of the cleaner body when the dust separating unit is mounted on the seating part.
    Type: Application
    Filed: November 5, 2009
    Publication date: July 1, 2010
    Inventors: Jung-Gyun Han, Jang-Keun Oh, Seung-Yong Cha
  • Patent number: 7747278
    Abstract: A method for transmitting a message from a mobile terminal in a mobile communication system. The method includes displaying a list of messages attempted to be transmitted, selecting a message from the list of transmitted messages that was unsuccessfully transmitted, and displaying detailed information about the selected message that was unsuccessfully transmitted.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: June 29, 2010
    Assignee: LG Electronics Inc.
    Inventor: Dal-Yong Cha
  • Patent number: 7691161
    Abstract: A cyclone dust-collecting apparatus to separate dust from air drawn in through a suction port body of a vacuum cleaner using a centrifugal force and to collect the separated dust is provided. The cyclone dust-collecting apparatus includes a primary cyclone unit to separate dust from air drawn in through the suction port body; a secondary cyclone unit disposed inside the primary cyclone unit to separate dust from air discharged from the primary cyclone unit; and a tertiary cyclone unit disposed above the primary cyclone unit at an angle different from the primary and secondary cyclone units.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: April 6, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-keun Oh, Seung-yong Cha
  • Patent number: 7684824
    Abstract: A method for transmitting a message from a mobile terminal includes determining whether a specific event that occurs during the transmission may be disregarded. The specific event may be an event such as a closing/opening of a folder, a flip, or a sliding cover of the mobile terminal or a receipt of a call from another party. Normally, the specific event causes the mobile terminal to terminate the transmission of the message. However, the user may specify that the specific event may be disregarded, and the transmission may continue without disruption. As an example, an event disregard mode may be set via a menu for one or more specific events to indicate that the specific events may be disregarded. Thus, user's convenience is enhanced and a fast communication service is provided to users.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: March 23, 2010
    Assignee: LG Electronics Inc.
    Inventor: Dal-Yong Cha
  • Patent number: 7640625
    Abstract: A vacuum cleaner includes a cyclone dust separating unit which includes a cyclone part to separate dust from a dust-laden air drawn from a surface being cleaned using a centrifugal force, a dust collecting part comprising a dust chamber to accommodate the dust separated at the cyclone part, and a compressing part to compress the dust accommodated in the dust chamber. The compressing part includes a driving part to rotatably drive a driving axis, and a compressing plate driven in a substantially perpendicular direction with respect to the driving axis according to the rotation of the driving axis, and to compress the dust accommodated in the dust chamber. As a result, a vacuum cleaner is provided, which requires a minimum space for the installation of a compressing part to compress dust inside the dust collecting part, and provides maximum compressing force of the compressing part.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: January 5, 2010
    Assignee: Samsung Gwangju Electronics Co., Ltd.
    Inventors: Jang-Keun Oh, Jin-Gon Lee, Seung-Yong Cha