Patents by Inventor Kyoung Cho

Kyoung Cho 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: 20060185982
    Abstract: A dielectrophoresis (DEP) apparatus including a concentration gradient generating unit, a method of separating a target material in a sample solution using the DEP apparatus, and a method of screening the optimum condition for separating a target material are provided.
    Type: Application
    Filed: January 23, 2006
    Publication date: August 24, 2006
    Inventors: Chin-sung Park, Yoon-kyoung Cho, Sook-young Kim, Mi-ae Jung, Jin-tae Kim
  • Patent number: 7087985
    Abstract: In a nitride semiconductor LED having a light emitting structure, an n-doped semiconductor layer has a first region and a second region surrounding the first region, an active layer is formed on the second region of the n-doped semiconductor layer, and a p-doped nitride semiconductor layer is formed on the active layer. A p-electrode is formed on the p-doped semiconductor layer. An n-electrode is formed on the first region of the n-doped nitride semiconductor layer.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: August 8, 2006
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young Ho Park, Hyo Kyoung Cho, Seung Jin Yoo, Kun Yoo Ko
  • Publication number: 20060140051
    Abstract: Provided is a microfluidic device including at least one inlet, at least one outlet, and a microchannel connecting the inlet and the outlet. The microfluidic device includes two or more electromagnets disposed on sidewalls of the microchannel and oriented in a predetermined direction with respect to the direction in which the microchannel extends.
    Type: Application
    Filed: November 22, 2005
    Publication date: June 29, 2006
    Inventors: Jin-tae Kim, Kwang-wook Oh, Yoon-kyoung Cho, Sang-hyun Peak, Sook-young Kim, Chin-sung Park, Kak Namkoong
  • Publication number: 20060092757
    Abstract: Provided are a method of and an apparatus for rapidly and effectively mixing fluids even in a laminar flow regime with a very low Reynold's number by applying AC power with a resonant frequency to more effectively induce electrokinetic instability. Also provided are a method of and an apparatus for mixing fluids in which the degree of mixing of the fluids can be varied with time by applying AC power with a lower frequency than a resonant frequency to synchronize a pattern of mixing fluids with the AC power.
    Type: Application
    Filed: October 24, 2005
    Publication date: May 4, 2006
    Inventors: Yoon-kyoung Cho, Sang-min Shin, In-seok Kang, Jae-wan Park
  • Publication number: 20060082425
    Abstract: Provided is a narrowband microstrip type bandpass filter adapted- to a home network, telematics, an intelligent traffic system, and a satellite Internet, the microstrip type bandpass filter comprising: an input terminal for receiving a predetermined signal; an output terminal for outputting a selection signal in a characteristic band; a first resonator electrically coupled with at least a portion of the input terminal; a second resonator electrically coupled with at least a portion of the first resonator; and a third resonator electrically coupled with at least a portion of the output terminal and the second resonator, and a magnetic coupling is provided using a cross coupling gap or a cross coupling line between non-adjacent resonators, so that a pattern can be simplified by optimizing the design and the manufacturing process to provide low-cost millimeter-wave parts, the manufacturing cost can be reduced by miniaturizing the parts, and the mass production can be readily realized.
    Type: Application
    Filed: May 25, 2005
    Publication date: April 20, 2006
    Inventors: Dong Jun, Hong Lee, Dong Kim, Kyoung Cho, Sang Lee
  • Publication number: 20060078010
    Abstract: Provided is a millimeter-wave band frequency optical oscillator that can be used as an oscillation frequency signal source for a millimeter-wave forwarded to wireless subscribers from a base station of a millimeter-wave wireless subscriber communication system for a next generation (e.g., fifth generation) ultra-high speed wireless internet service. A pair of an optical fiber amplifier and an optical fiber grating mirror is connected to each of input/output ports of a loop mirror in parallel, so that a dual mode laser resonator is formed which can make simultaneous oscillation in two laser modes suitable for each wavelength. Accordingly, it is possible to obtain a light source that is modulated to a ultra-high frequency (over 60 GHz) by a beat phenomenon between the two laser modes.
    Type: Application
    Filed: December 22, 2004
    Publication date: April 13, 2006
    Inventors: Young Kim, Eun Nam, Kyoung Cho, Bo Kim, Myung Oh
  • Publication number: 20060079639
    Abstract: Disclosed is a resin composition comprising (A) 100 parts by weight of a base resin comprising a rubber-modified styrene-containing graft copolymer and a styrene-containing copolymer; (B) 0.5-8 parts by weight of an acrylic rubber graft copolymer resin having an average particle size of 0.1-0.5 ?m; and (C) 0.5-8 parts by weight of a graft copolymer resin comprising an ethylene ?-olefinic copolymer rubber having an average particle size of 0.1-0.8 ?m. The thermoplastic resin composition of the present invention greatly improves chemical resistance to insulating materials, such as urethane foam, or foaming agent compounds, such as freon (CFC-11, HCFC-141b, HFC-245fa, HFC-245eb, HFC-245ca, HFC-356mffm) and cyclopentane and offers superior impact strength, whiteness and processability. It can be useful for extrusion sheets of refrigerator interiors.
    Type: Application
    Filed: October 12, 2005
    Publication date: April 13, 2006
    Inventors: Sung-je Cha, Sung-tae Ahn, Dong-chul Kim, Yun-kyoung Cho
  • Publication number: 20060066857
    Abstract: Provided are an optical system for analyzing multi-channel samples which uses a mirror rotating at high speeds and an aspherical mirror, and a multi-channel sample analyzer employing the optical system. The optical system for analyzing multi-channel samples, includes a light source unit which emits light traveling along an optical axis; a semi-spheroid aspherical mirror disposed in rotational symmetry about the optical axis; and an inclined mirror which reflects the light exiting the light source unit to the semi-spheroid aspherical mirror, while rotating about the optical axis, wherein an opening is formed in the center of the semi-spheroid aspherical mirror such that the light exiting the light source unit enters the inclined mirror through the semi-spheroid aspherical mirror.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 30, 2006
    Inventors: Gyeong-sik Ok, Yoon-Kyoung Cho, Jin-tae Kim, Kwang-wook Oh
  • Publication number: 20060028279
    Abstract: There is provided a feedback amplifier capable of easily controlling its dynamic range without a separate gain control signal generation circuit. The feedback amplifier includes an input terminal detecting an input voltage from input current, a feedback amplification unit amplifying the input voltage to generate an output signal, and an output terminal outputting a signal amplified by the feedback amplification unit. The feedback amplification unit includes a feedback circuit unit including a feedback resistor located between the input terminal and the output terminal, and a feedback transistor connected in parallel to the feedback resistor; and a bias circuit unit supplying a predetermined bias voltage to the feedback transistor of the feedback circuit unit and merged in the feedback amplification unit.
    Type: Application
    Filed: November 23, 2004
    Publication date: February 9, 2006
    Inventors: Sang Lee, Hyeon Ki, Jin Kang, Kyu Shim, Kyoung Cho
  • Publication number: 20050202489
    Abstract: Provided are a method and apparatus for amplifying nucleic acids. The method includes introducing into a reaction vessel via different inlet channels a reactant aqueous solution containing reactants for nucleic acid amplification and a fluid that is phase-separated from the reactant aqueous solution and does not participate in amplification reaction, creating a plurality of reactant aqueous solution droplets surrounded by the fluid by contacting the reactant aqueous solution with the fluid in the reaction vessel, and amplifying the nucleic acids in the reactant aqueous solution droplets.
    Type: Application
    Filed: March 3, 2005
    Publication date: September 15, 2005
    Inventors: Yoon-kyoung Cho, Joon-ho Kim, Kak Namkoong, Geun-bae Lim, Jun-hong Min
  • Publication number: 20050186602
    Abstract: A method for amplifying a nucleic acid using a solid phase material coated with a carboxyl group or an amino group is provided. The method includes contacting a mixture of a nucleic acid containing sample and a salt solution with the solid phase material coated with a carboxyl group or an amino group to form a nucleic acid-solid phase material complex, washing the nucleic acid-solid phase material complex with a wash buffer, and adding a reaction solution for amplifying a nucleic acid to the nucleic acid-solid phase material complex to perform an amplification reaction.
    Type: Application
    Filed: January 25, 2005
    Publication date: August 25, 2005
    Inventors: Joon-ho Kim, Yoon-kyoung Cho, Jung-joo Hwang, Geun-bae Lim, Jeong-gun Lee
  • Publication number: 20050182813
    Abstract: A multiplication apparatus including a multiplier and multiplicand extractor for dividing the multiplicand into partial multiplicands and dividing the multiplier into partial multipliers, and for generating partial input pairs by combining the partial multiplicands with the partial multipliers, and a multiplication executor including identical partial multiplication modules for receiving the partial input pairs and outputting partial carries and partial products. The apparatus further includes an output generator for combining the partial carries with the partial products according to the execution instruction to generate a final output. For simple multiplications, each of the partial multiplication modules can pass data to and from an adjacent partial multiplication module to calculate the partial carry and the partial product, and pass bits exceeding its own multiplication coverage.
    Type: Application
    Filed: January 19, 2005
    Publication date: August 18, 2005
    Inventors: Won-kyoung Cho, Jung-wook Kim, In-cheol Park, Eul-hwan Lee, Hyeong-ju Kang
  • Publication number: 20050164281
    Abstract: Provided are a DNA PCR module and a multiple PCR system using the same. More particularly, provided are a DNA PCR module with a combined PCR thermal cycler and PCR product detector, and a multiple PCR system using the same.
    Type: Application
    Filed: March 15, 2005
    Publication date: July 28, 2005
    Inventors: Kwang-wook Oh, Jin-tae Kim, Kak Namkoong, Chin-sung Park, Yoon-kyoung Cho
  • Publication number: 20050158777
    Abstract: A method of isolating nucleic acid using a carbon nanotube is provided. The method includes contacting a mixture of a sample containing nucleic acid and a salt solution with a carbon nanotube to form a nucleic acid-carbon nanotube composite; washing the nucleic acid-carbon nanotube composite with a washing buffer; and eluting the nucleic acid from the nucleic acid-carbon nanotube composite.
    Type: Application
    Filed: December 28, 2004
    Publication date: July 21, 2005
    Inventors: Yoon-kyoung Cho, Joon-ho Kim, Jung-joo Hwang, Wan-jun Park, Geun-bae Lim
  • Publication number: 20050139921
    Abstract: Provided are an NMOS device, a PMOS device and a SiGe HBT device which are implemented on an SOI substrate and a method of fabricating the same. In manufacturing a Si-based high speed device, a SiGe HBT and a CMOS are mounted on a single SOI substrate. In particular, a source and a drain of the CMOS are formed of SiGe and metal, and thus leakage current is prevented and low power consumption is achieved. Also, heat generation in a chip is suppressed, and a wide operation range may be obtained even at a low voltage.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 30, 2005
    Inventors: Jin Kang, Seung Lee, Kyoung Cho
  • Publication number: 20050136463
    Abstract: A method for isolating a nucleic acid is provided. The method includes mixing a nucleic acid-containing sample, a salt solution, and alumina; isolating the alumina having the nucleic acid attached thereto from the liquid; washing the alumina having the nucleic acid attached thereto; and eluting the nucleic acid from the alumina.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 23, 2005
    Inventors: Joon-ho Kim, Yoon-kyoung Cho, Geun-bae Lim, Soo-hwan Jeong
  • Patent number: 6905829
    Abstract: The present invention provides a method for improving detection sensitivity of hybridized nucleic acid immobilized on a solid support of sensing device for gene assay, by removing non-hybridized nucleic acid probe using nuclease from the solid support. In accordance with the invented method, background signal caused by single stranded probe that is not hybridized with target nucleic acid or signal caused by non-specific binding of target nucleic acid to probe is decreased or removed, which improves detection sensitivity of hybridization with a high accuracy, and minimizes the loss of hybridized nucleic acid in the course of washing background signal removed in the conventional method.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: June 14, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon Kyoung Cho, Hee Kyun Lim
  • Publication number: 20050104127
    Abstract: Provided are bipolar transistor, BiCMOS device and method of fabricating thereof, in which an existing sub-collector disposed beneath a collector of a SiGe HBT is removed and a collector plug disposed at a lateral side of the collector is approached to a base when fabricating a Si-based very high-speed device, whereby it is possible to fabricate the SiGe HBT and an SOI CMOS on a single substrate, reduce the size of the device and the number of masks to be used, and implement the device of high density, low power consumption, and wideband performance.
    Type: Application
    Filed: June 22, 2004
    Publication date: May 19, 2005
    Inventors: Jin Kang, Seung Lee, Kyoung Cho
  • Publication number: 20050084208
    Abstract: The present invention relates to a millimeter wave frequency band optical oscillator used for an oscillating frequency signal source of millimeter waves transmitted from a repeater to a wireless subscriber in a millimeter wave wireless subscriber communication system for a next-generation (i.e., 5th generation or less) very high speed wireless internet service, wherein a loop mirror and a pair of optical fiber grating mirrors are used. A wavelength fixed type and a wavelength tunable type optical fiber grating mirrors are connected in a serial manner to constitute a dual laser mode resonator capable of simultaneously oscillating two laser modes, which are appropriate to each wavelength. Therefore, it is possible to obtain a laser light source capable of an extremely high frequency (60 GHz or more) modulation by using beat phenomena between two laser modes.
    Type: Application
    Filed: December 31, 2003
    Publication date: April 21, 2005
    Inventors: Ho Kim, Eun Nam, Kyoung Cho
  • Publication number: 20050074173
    Abstract: An image processing apparatus and an image processing method that reduce data transmission time by transmitting data between internal memories of a codec without passing through a system memory. Reducing the number of accesses to the system memory increases processing speed, and reduces the load of a main processor, when image data is to be encoded or decoded.
    Type: Application
    Filed: September 17, 2004
    Publication date: April 7, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eul-hwan Lee, Kyeong-man Kim, Goo-soo Gahang, Won-kyoung Cho