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: 20080112855
    Abstract: Provided are a valve unit and a microfluidic device including the valve unit. The valve unit includes: a valve substance container containing a valve substance, the valve substance including a phase change material that is solid at ambient temperature and melts by absorbing energy; a valve connection path connecting the valve substance container to a channel forming a fluid passage; and a pair of drain chambers formed along the channel at both sides of the valve connection path.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 15, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Beom-seok Lee, Yoon-kyoung Cho, Jeong-gun Lee, Jong-myeon Park
  • Publication number: 20080108120
    Abstract: A centrifugal force-based microfluidic device for nucleic acid extraction and a microfluidic system are provided. The microfluidic device includes a body of revolution; a microfluidic structure disposed in the body of revolution, the microfluidic structure including a plurality of chambers, channels connecting the chambers, and valves disposed in the channels to control fluid flow, the microfluidic structure transmitting the fluid using centrifugal force due to rotation of the body of revolution; and magnetic beads contained in one of the chambers which collect a target material from a biomaterial sample flowing into the chamber, wherein the microfluidic structure washes the magnetic beads which collect the target material, and separates nucleic acid by electromagnetic wave irradiation from an external energy source to the magnetic beads.
    Type: Application
    Filed: August 31, 2007
    Publication date: May 8, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-kyoung CHO, Jeong-gun LEE, Beom-seok LEE, Jong-myeon PARK
  • Patent number: 7364857
    Abstract: Provided is a method of purifying a target substance using silver nanoparticles. The method includes: mixing a sample containing molecules having a thiol group with the silver nanoparticles to obtain a complex of the molecules having the thiol group with the silver nanoparticles; and isolating and removing the complex from the mixture. By using the purification method, PCR amplifiable DNAs can be rapidly purified, and thus, the method can be very efficiently applied to lab-on-chip (LOC).
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: April 29, 2008
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yoon-kyoung Cho, Sook-young Kim, Jin-tae Kim, Kyu-sang Lee
  • Publication number: 20080093229
    Abstract: A molecular detection chip including a metal oxide silicon-field effect transistor (MOSFET) on sidewalls of a micro-fluid channel and a molecular detection device including the molecular detection chip are provided. A molecular detection method, particularly, qualification methods for the immobilization of molecular probes and the binding of a target sample to the molecular probes, using the molecular detection device, and a nucleic acid mutation assay device and method are also provided. The formation of the MOSFET on the sidewalls of the micro-fluid channel makes easier to highly integrate a molecular detection chip. In addition, immobilization of probes directly on the surface of a gate electrode ensures the molecular detection chip to check for the immobilization of probes and coupling of a target molecule to the probes in situ.
    Type: Application
    Filed: May 31, 2007
    Publication date: April 24, 2008
    Inventors: Geun-Bae Lim, Chin-Sung Park, Yoon-Kyoung Cho, Sun-Hee Kim
  • Publication number: 20080090177
    Abstract: Disclosed is a resin composition including a cardo resin. Exemplary resin compositions can include (a) a cardo resin having a structural unit represented by Formula 1, (b) a reactive unsaturated compound, (c) an initiator, and (d) a solvent, wherein each R1 and R2 is independently a hydrogen atom, a halogen atom or a C1-C5 alkyl group, R3 is a vinyl, acryl or methacryl group, Z represents the residue of an acid anhydride or dianhydride, X is —CO—, —SO2—, —C(CF3)2—, —Si(CH3)2— and k is integer from 1 to 40. Further disclosed is a color filter which includes a fine pattern formed using the composition. The color filter can exhibit superior resistance to heat and chemicals, improved developability, and good adhesiveness.
    Type: Application
    Filed: May 11, 2007
    Publication date: April 17, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hee Young OH, Choun Woo LEE, Hye Kyoung CHO, Ju Kwang PARK, Cheon Seok LEE
  • Publication number: 20080090275
    Abstract: Provided is a method for concentrating and disrupting cells or viruses, the method employs magnetic particles which are capable of binding the cells or viruses to capture the cells or viruses and a laser to disrupt the cells or viruses. Since the same particles are used in target cell separation and cell lysis, there is no need to add additional particles in a laser lysis process, and thus integration of a target cell separation, concentration, purification, and nucleic acid extraction process is easy.
    Type: Application
    Filed: April 9, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-kyoung Cho, Jeong-gun Lee, Jong-myeon Park, Young-sun Lee, Hyo-yeon Lee
  • Patent number: 7344837
    Abstract: Provided are a primer set selected from the group consisting of primers having nucleotide sequences as set forth in SEQ ID NOS: 1–40, a method for detecting hepatitis B virus by polymerase chain reaction (PCR) using the primer set, and a hepatitis B virus detection kit including the primer set.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: March 18, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-sun Lee, Jung-im Han, Jung-joo Hwang, Mi-kyung Kim, Yoon-kyoung Cho, Hee-kyun Lim, Young-a Kim
  • Publication number: 20080056063
    Abstract: Provided is a method of mixing fluids including introducing at least two kinds of fluids to a chamber of a substrate including a microchannel structure; and alternately rotating the substrate clockwise and counter-clockwise until the at least two kinds of fluids are mixed, wherein the rotation is changed from one direction to the opposite direction before a vortex created in the mixing chamber by the one direction rotation disappears.
    Type: Application
    Filed: May 22, 2007
    Publication date: March 6, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Yoon-kyoung Cho, Jeong-gun Lee, Beom-seok Lee, Jong-myeon Park
  • Publication number: 20080058192
    Abstract: A centrifugal force based microfluidic device including a thermal activation unit, a microfluidic system including the same, and a method of operating the microfluidic system are provided. The thermal activation unit accompanies a temperature change in order to carry out its functions and having heat generation particles that absorb electromagnetic waves and generate heat in the activation unit therein.
    Type: Application
    Filed: August 30, 2007
    Publication date: March 6, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoon-kyoung CHO, Jeong-gun LEE, Beom-seok LEE, Jong-myeon PARK
  • Publication number: 20080056949
    Abstract: A centrifugal force-based microfluidic device for the detection of a target biomolecule and a microfluidic system including the same are provided. The device includes a body of revolution; a microfluidic structure disposed in the body of revolution including chambers, channels connecting the chambers, and valves disposed in the channels to control fluid flow, the microfluidic structures transmitting fluid using centrifugal force due to rotation of the body of revolution; and beads disposed in the microfluidic structures, the beads having capture probes on the surfaces thereof which are selectively bonded with target protein; and a detection probe disposed in the microfluidic structures and selectively bonded to the target protein, and which includes a material required to express an optical signal, wherein the microfluidic structure mixes the beads, biological samples, and the detection probe to react and washes and separates the beads after the reaction.
    Type: Application
    Filed: September 5, 2007
    Publication date: March 6, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Beom-seok LEE, Yoon-kyoung CHO, Jeong-gun LEE, Jong-myeon PARK
  • Publication number: 20080058991
    Abstract: Provided are an apparatus and a method of controlling a microfluidic system, and the microfluidic system. The apparatus of controlling the microfluidic system includes a central control block controlling an operation of the microfluidic system, a rotator control block controlling a rotator, a position control block controlling the position of a moving unit, the moving unit moving to a position of the microfluidic structure, and a radiation energy source control block controlling energy of a radiation energy source, the radiation energy source using an electromagnetic wave to scan over a position of the microfluidic structure. Such a configuration allows effective control of a miniaturized portable microfluidic system.
    Type: Application
    Filed: August 8, 2007
    Publication date: March 6, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-gun LEE, Yoon-kyoung Cho, Beom-seok Lee, Jong-myeon Park
  • Patent number: 7338808
    Abstract: Provided is a method for determining a zeta potential generated between a solid wall and a solution. The method includes (a) injecting an electrolyte solution into a first inlet of a T channel, which is provided with first and second inlet electrodes and a grounded outlet electrode, and a mixed solution of the electrolyte solution and a fluorescent dye into a second channel of the T channel and maintaining a steady-state of the two solutions; (b) applying a direct current electric field from the first and second electrodes to the outlet electrode to form an interface between the electrolyte solution and the mixed solution; (c) applying an alternating current electric field from one of the two inlet electrodes to the outlet electrode to oscillate the interface; and (d) measuring an amplitude of oscillation of the interface and determining the zeta potential from the standard relationship between the zeta potential and the amplitude.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: March 4, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-kyoung Cho, Sang-min Shin, In-seok Kang, Geun-bae Lim
  • Publication number: 20080035579
    Abstract: A centrifugal micro fluidic system and a centrifugal magnetic position control device used in the centrifugal micro fluidic system for controlling the position of magnetic beads are provided. The centrifugal micro fluidic system comprising, a rotatable platform; a micro fluidic structure which is disposed in the platform; and a plurality of objects which include functional groups on surfaces thereof so as to capture a target material from the fluid and carry the target material while being suspended in and separated from the fluid in the micro fluidic structure, wherein the movements of the objects are controlled by a force affecting the objects differently compared to the force's effect on the fluid. When the objects are made of a magnetic material, the force may be a magnetic force applied by the centrifugal magnetic position control device.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 14, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong-gun LEE, Yoon-kyoung CHO, Beom-seok LEE, Jong-myeon PARK
  • Patent number: 7329535
    Abstract: Provided are an apparatus for circulating a carrier fluid having two or more chambers or sections, an apparatus for amplifying a nucleic acid using the same, and a chip containing the same. The apparatus for circulating a carrier fluid includes two or more chambers maintained at different temperatures, each chamber having an inlet valve containing a pneumatic air pressure port for controlling inflow of the carrier fluid to the chamber (inlet pneumatic air pressure port), and an outlet valve containing a pneumatic air pressure for controlling outflow of the carrier fluid from the chamber (outlet pneumatic air pressure port), wherein the chambers are sequentially connected such that the outlet valve of one chamber is connected to the inlet valve of an adjacent chamber in a direction the fluid flows.
    Type: Grant
    Filed: November 11, 2002
    Date of Patent: February 12, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-wook Oh, Geun-bae Lim, Young-sun Lee, Yoon-kyoung Cho
  • Publication number: 20080029158
    Abstract: Provided are a valve unit and a reaction apparatus having the valve unit. The valve unit includes a phase transition material, which melts and expands upon an application of the electromagnetic waves to the valve filler, and the valve filler is directed into the channel through the connection passage and closes the channel. The valve unit also includes heat generation particles, which are dispersed in the phase transition material and generate heat upon an application of electromagnetic wave energy.
    Type: Application
    Filed: June 22, 2007
    Publication date: February 7, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong-myeon Park, Yoon-kyoung Cho, Jeong-gun Lee, Beom-seok Lee, Sung-woo Hong
  • Publication number: 20080023388
    Abstract: Provided are a magnetic microparticle separation device for separating and purifying target biomolecules and a microfluidic system using the device. The device includes a magnetic microparticle, a chamber to receive a buffer, a channel including an inlet, outlet and a connecting portion which is connected to and fluid communicates with the chamber, wherein a fluid sample containing the target biomolecules and magnetic microparticle flows through the channel and the magnetic microparticle which captures the target biomolecules are separated from the fluid sample.
    Type: Application
    Filed: May 23, 2007
    Publication date: January 31, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yoon-kyoung Cho, Jeong-gun Lee, Beom-seok Lee, Jong-myeon Park, Sung-woo Hong
  • Publication number: 20070284254
    Abstract: An apparatus separating a polarizable analyte using dielectrophoresis includes a vessel including a membrane having a plurality of nano- to micro-sized pores, the membrane disposed inside the vessel, electrodes generating spatially non-uniform electric fields in the nano- to micro-sized pores of the membrane when an AC voltage is applied to the electrodes, and a power source applying the AC voltage to the electrodes, wherein a sectional area of the pores varies along a depth of the pores. A method of separating a polarizable material uses the apparatus.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 13, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-kyoung Cho, Su-hyeon Kim, Chin-sung Park, Kyu-sang Lee, Jeong-gun Lee
  • Publication number: 20070287234
    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: April 30, 2007
    Publication date: December 13, 2007
    Inventors: Jin Kang, Seung Lee, Kyoung Cho
  • Publication number: 20070231216
    Abstract: A valve unit and an apparatus having the same include a plug which includes a phase change material in a solid state at a room temperature and a plurality of fine heat-dissipating particles dispersed in the phase change material. The fine heat-dissipating particles dispersed in the phase change material dissipate heat by absorbing an electromagnetic wave energy generated by electromagnetic wave radiation from the outside and block fluid flow in a path formed by a channel. As an external energy source irradiates an electromagnetic wave on the plug, the plurality of fine heat-dissipating particles dissipate heat and the phase change material becomes molten, thus opening the path to allow the fluid to flow.
    Type: Application
    Filed: January 19, 2007
    Publication date: October 4, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Jong-myeong PARK, Jeong-gun LEE, Yoon-kyoung CHO
  • Publication number: 20070218610
    Abstract: A molecular detection chip including a metal oxide silicon-field effect transistor (MOSFET) on sidewalls of a micro-fluid channel and a molecular detection device including the molecular detection chip are provided. A molecular detection method, particularly, qualification methods for the immobilization of molecular probes and the binding of a target sample to the molecular probes, using the molecular detection device, and a nucleic acid mutation assay device and method are also provided. The formation of the MOSFET on the sidewalls of the micro-fluid channel makes easier to highly integrate a molecular detection chip. In addition, immobilization of probes directly on the surface of a gate electrode ensures the molecular detection chip to check for the immobilization of probes and coupling of a target molecule to the probes in situ.
    Type: Application
    Filed: May 31, 2007
    Publication date: September 20, 2007
    Inventors: Geun-Bae Lim, Chin-Sung Park, Yoon-Kyoung Cho, Sun-Hee Kim