Patents by Inventor Chan Kwak

Chan Kwak 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: 20100157143
    Abstract: A camera module package is disclosed. The camera module package is capable of preventing defects caused by foreign bodies and enhancing product reliability by reducing the time consumed in a packaging process for manufacturing a camera module, and of reducing the size of a package and manufacturing costs by excluding the use of gold wires.
    Type: Application
    Filed: November 3, 2009
    Publication date: June 24, 2010
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ho Kyoum Kim, Gab Yong Kim, Hyung Chan Kwak
  • Patent number: 7732087
    Abstract: The catalyst for a fuel cell includes a carbon-based material, and Re-Ch supported on the carbon-based material, wherein Ch is selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst has high activity and selectivity for reduction of oxidant and is capable of improving performance of a membrane-electrode assembly and a fuel cell system.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: June 8, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee
  • Publication number: 20100086292
    Abstract: Disclosed herein is a device and method for automatically controlling continuous auto focus. The device includes a lens unit installed in a camera module, and configured to receive images of an external subject; a lens actuation unit for moving the lens unit along an optical axis so as to focus on a subject; an image sensor for receiving the external images, converting the external images into image signals, and outputting the image signals; a computation unit for detecting focus values and feature parameters; a mode determination unit for automatically performing switching between general mode, specific mode and tracking mode, setting the mode, and automatically setting a fixed or variable window according to the set mode using the detected feature parameters; and a lens control unit for generating a control signal for controlling the lens actuation unit so as to perform continuous auto focus according to the detected focus values.
    Type: Application
    Filed: January 13, 2009
    Publication date: April 8, 2010
    Applicant: SAMSUNG ELECTRO- MECHANICS CO., LTD.
    Inventors: Oh Sung Byun, Ho Kyoum Kim, Gab Yong Kim, Sung Hyun Kim, Hyung Chan Kwak
  • Patent number: 7679669
    Abstract: A camera module package comprises an image sensor having a light receiving section formed in the central portion of the upper surface thereof and a plurality of bumps formed around the light receiving section; an FPCB that is closely bonded to the image sensor by a flip chip, the FPCB having a plurality of via holes perforated at bonding positions corresponding to the bumps such that the bumps and the via holes are closely bonded to each other one to one; and an optical unit having a housing received on the FPCB and a lens barrel screwed to the central portion of the housing.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: March 16, 2010
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Hyung Chan Kwak
  • Publication number: 20100053343
    Abstract: An apparatus for correcting motion caused by hand shake performs hand shake correction in due consideration of both linear motion and rotation by detecting linear motion of a capturing device by comparing preceding and subsequent image frames and detecting rotation of the capturing device using a gyro sensor. The apparatus for correcting motion caused by hand shake may include a rotation detection unit detecting the amount of rotation of a capturing device by using a gyro sensor, a linear-motion detection unit comparing preceding and subsequent image frames generated by an image sensor unit to detect the amount of linear motion of the capturing device, and an output image determination unit correcting the detected amount of rotation and the detected amount of linear motion in an image frame input from the image sensor to generate a corrected output image frame.
    Type: Application
    Filed: July 28, 2009
    Publication date: March 4, 2010
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyun KIM, Ho Kyoum Kim, Ho Seop Jeong, Hyung Chan Kwak, In Taek Song
  • Patent number: 7670713
    Abstract: A fuel cell electrode includes a catalyst layer and an electrode substrate supporting the catalyst layer and including a conductive substrate. The catalyst layer includes a first catalyst supported on a carbon supporter and a second catalyst supported on an inorganic oxide supporter. The first catalyst includes an alloy of Pt and a metal selected from the group consisting of Co, Ni, and a mixture thereof, and the second catalyst includes an alloy of Pt and a metal selected from the group consisting of Co, Ni, and a mixture thereof.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: March 2, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chan Kwak, Hee-Tak Kim, Myoung-Ki Min
  • Publication number: 20090136808
    Abstract: The porous carbon structure according to one embodiment of the present invention includes mesopores, and at least two kinds of macropores having different average pore diameters. The porous carbon structure includes inter-connected pores and thereby increases specific surface area and improves electronic conductivity.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 28, 2009
    Inventors: Soon-Ki Kang, Geun-Seok Chai, Myoung-Ki Min, Chan Kwak, Alexey Alexandrovichserov
  • Publication number: 20090136816
    Abstract: A hollow capsule structure and a method of preparing the same are disclosed. The hollow capsule structure may include a shell with nanopores. The nanopores may be spherical nanopores. The hollow capsule structure may include pores connected to one another with excellent electronic conductivity and a large specific surface area. In addition, the hollow capsule structure may be configured to can easily transfer mass due to a capillary phenomenon of the nanopores in the shell. As a result, the hollow capsule structure may be configured for use with a catalyst supporter, a supporter for growing carbon nanotubes, an active material, a conductive agent, a separator, a deodorizer, a purifier, an adsorption agent, a material for a display emitter layer, a filter and the like.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 28, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Soon-ki Kang, Geun-Seok Chai, Myoung-Ki Min, Chan Kwak
  • Publication number: 20090104509
    Abstract: The present invention provides a carrier for a fuel cell including a cryogel-type carbon. A catalyst of the fuel cell includes the cryogel-type carbon and an active material. One of an anode and cathode of the fuel cell has the catalyst including cryogel-type carbon. The carrier for a fuel cell has excellent porosity, specific surface area, and density characteristics, and thus is capable of improving catalyst activity due to excellent catalyst-supporting efficiency, and thereby cell performance.
    Type: Application
    Filed: July 2, 2008
    Publication date: April 23, 2009
    Inventors: Chan Kwak, Alexey Alexandrovichserov, Soon-Ki Kang
  • Publication number: 20090061286
    Abstract: The cathode catalyst for a fuel cell includes PdM where M is a metal selected from the group consisting of Mn, Fe, Co, Cu, and combinations thereof. The average distance between the Pd atoms ranges from 2.72 to 2.73 ?, the average distance between the Pd and M atoms ranges from 2.63 to 2.67 ?, and the average distance between the M atoms ranges from 2.63 to 2.67 ?. The cathode catalyst is relatively cheaper but has excellent activity compared with a Pt catalyst.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 5, 2009
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Soon-Cheol Shin
  • Publication number: 20090011311
    Abstract: The cathode catalyst for a fuel cell includes an RuSe alloy having an average particle size of less than or equal to 6 nm. The cathode catalyst may also include a metal carbide. The RuSe alloy is a highly active amorphous catalyst.
    Type: Application
    Filed: December 14, 2007
    Publication date: January 8, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Ho-Jin Kweon, Si-Hyun Lee
  • Publication number: 20080318106
    Abstract: The cathode catalyst for a mixed reactant fuel cell includes a mixed catalyst that includes a first catalyst including a Ru—Ch1 compound where Ch1 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof, and a second catalyst including a Pt—Ch2 compound where Ch2 is a chalcogens selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst can improve excellent power characteristics of a fuel cell due to excellent catalyst activity and selectivity.
    Type: Application
    Filed: March 19, 2008
    Publication date: December 25, 2008
    Inventors: Chan Kwak, Alexey Alexandrovichserov, Geun-Seok Chai, Soon-Ki Kang
  • Publication number: 20080248372
    Abstract: A fuel cell catalyst includes a platinum-iron (Pt—Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 ? to about 3.899 ? (or from about 3.862 ? to about 3.880 ?), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.800 ? to about 3.880 ? (or from about 3.810 ? to about 3.870 ?) and a second lattice constant ranging from about 3.700 ? to about 3.810 ? (or from about 3.710 ? to about 3.800 ?). A membrane-electrode assembly can improve cell performance by including the above catalyst having the relatively high activity and selectivity for an oxidant reduction in at least one of an anode or a cathode, and can increase lifespan by inhibiting catalyst poisoning.
    Type: Application
    Filed: November 7, 2007
    Publication date: October 9, 2008
    Inventors: Myoung-Ki MIN, Chan-Hee PARK, Chan KWAK, Alexey ALEXANDROVICHSEROV, Go-Ul CHOI, Geun-Seok CHAI
  • Publication number: 20080152979
    Abstract: The cathode catalyst includes a zeolite-containing carrier, and a ruthenium (Ru)-M-tellurium (Te) alloy supported on the carrier, where M is selected from the group consisting of tungsten (W), molybdenum (Mo), and combinations thereof. The cathode catalyst has a high activity and selectivity for a reduction reaction of an oxidant, and is highly stable under an acidic atmosphere thereby being capable of improving performances of a membrane-electrode assembly and fuel cell system.
    Type: Application
    Filed: April 30, 2007
    Publication date: June 26, 2008
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee
  • Publication number: 20080138693
    Abstract: The present invention relates to a cathode catalyst for a fuel cell, a membrane-electrode assembly for a fuel cell including the cathode catalyst, and a fuel cell system. The cathode catalyst includes a core including RuO2, and Se and Pt. The Se and Pt are disposed to enclose the core. The cathode catalyst for a fuel cell of the present invention can have excellent catalyst efficiency, even if less platinum is included therein.
    Type: Application
    Filed: November 23, 2007
    Publication date: June 12, 2008
    Inventors: Myoung-Ki Min, Chan Kwak, Alexey Alexandrovichserov
  • Publication number: 20080118816
    Abstract: A stack for a direct oxidation fuel cell and a direct oxidation fuel cell system including the stack are provided. The stack for a direct oxidation fuel cell includes at least one membrane-electrode assembly including an anode and a cathode facing each other and a polymer electrolyte membrane interposed between the anode and cathode, and separators disposed at both sides of the membrane-electrode assembly. The cathode includes a platinum-based catalyst and a selective catalyst that can be active for reduction of an oxidant. The stack for a direct oxidation fuel cell of the present invention can have improved performance by including the platinum-based catalyst and the selective catalyst in a cathode catalyst layer, thereby minimizing catalyst poisoning due to a crossed-over fuel and maximizing catalyst activity for reduction of an oxidant.
    Type: Application
    Filed: April 4, 2007
    Publication date: May 22, 2008
    Inventors: Chan Kwak, Alexey Alexandrovichserov, Chang-Bong Lee, Si-Hyun Lee
  • Publication number: 20080008920
    Abstract: The cathode catalyst for a fuel cell of the present invention includes M—Co—Ch where M is at least one metal selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, and combinations thereof, and Ch is at least one element selected from the group consisting of S, Se, Te, and combinations thereof. The cathode catalyst of the present invention has high activity and excellent selectivity for reduction of an oxidant, and is capable of improving performance of a membrane-electrode assembly for a fuel cell, a fuel cell system including the same, and a membrane-electrode assembly including the same.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 10, 2008
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee
  • Publication number: 20070292739
    Abstract: The provided is a mixed reactant fuel cell system that includes a fuel cell body including a membrane-electrode assembly, a fuel tank, and a fuel pump. The fuel tank stores a mixed fuel including a hydrocarbon-based fuel and hydrogen peroxide (H2O2). The hydrogen peroxide (H2O2) acts as an oxidant, and has the same effect as an oxygen supplied into the hydrocarbon-based fuel from an oxygen supplier. The fuel pump supplies the mixed fuel into the fuel cell body to generate electricity. An anode included in the membrane-electrode assembly includes a catalyst that selectively activates the oxidation reaction of the hydrocarbon-based fuel. A cathode included in the membrane-electrode assembly includes a catalyst that selectively activates the reduction reaction of the oxidant in the cathode.
    Type: Application
    Filed: June 12, 2007
    Publication date: December 20, 2007
    Inventors: In-Hyuk Son, Sang-Il Han, Chan Kwak
  • Publication number: 20070268399
    Abstract: A camera module package comprises an image sensor having a light receiving section formed in the central portion of the upper surface thereof and a plurality of bumps formed around the light receiving section; an FPCB that is closely bonded to the image sensor by a flip chip, the FPCB having a plurality of via holes perforated at bonding positions corresponding to the bumps such that the bumps and the via holes are closely bonded to each other one to one; and an optical unit having a housing received on the FPCB and a lens barrel screwed to the central portion of the housing.
    Type: Application
    Filed: April 5, 2007
    Publication date: November 22, 2007
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyung Chan Kwak
  • Publication number: 20070269705
    Abstract: The anode catalyst for a fuel cell, the anode catalyst containing a Pd—Au—Sn alloy. The anode catalyst has an equivalent catalyst performance to that of platinum-based catalysts but costs significantly less.
    Type: Application
    Filed: March 8, 2007
    Publication date: November 22, 2007
    Inventors: Alexey Alexandrovichserov, Chan Kwak, Si-Hyun Lee