Patents by Inventor Kwang Hyo Chung

Kwang Hyo Chung 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: 20080286153
    Abstract: An affinity chromatography microdevice includes a top board and a bottom board. The top board includes an inlet and an outlet through which microfluid flows, and a reaction chamber for limiting the flow of the microfluid for reaction. The bottom board includes a microelectrode for independently controlling a micro-temperature, and a thermosensitive polymer matrix formed on the microelectrode. The thermosensitive polymer matrix is contracted or expanded according to temperature change.
    Type: Application
    Filed: November 27, 2006
    Publication date: November 20, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae-Sik Lee, Hyun-Cheol Yoon, Kwang-Hyo Chung, Hyeon-Bong Pyo, Chang-Auck Choi
  • Patent number: 7445754
    Abstract: Disclosed is to a device for exchanging minimum amount of the fluid only by using surface tension of the fluid instead of external force like a pump. According to the device, an additional pump and power supply is not needed, thereby the device can be small sized and portable, and not only manufacturing cost decreases and yield increases but the device is hardly out of order.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: November 4, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Hyo Chung, Jong Soo Ko, Hyun Chul Yoon, Hae Sik Yang, Hyeon Bong Pyo, Sung Jin Kim, Yun Tae Kim
  • Patent number: 7412990
    Abstract: Provided is a microfluidic control device and method for controlling the microfluid, and a fine amount of fluid is controlled even with natural fluid flow and solution injection, wherein a pressure barrier of a capillary is removed by a surface tension change resulted from the solution injection to thereby obtain transport, interflow, mixing, and time delay of the microfluid, and to detail this, solution is injected to meet the boundary surface of the stopped fluid when the fluid is stopped by the stop valve, so that a function of the stop valve is removed to obtain the transport, interflow, and mixing of the fluid, and the method for controlling the microfluid may be applied to the microfluidic control device for biochemical reaction, and it uses only the capillary force change resulted from solution injection to thereby have its structure simplified.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: August 19, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Hyo Chung, Hae Sik Yang, Dae Sik Lee, Yong Taek Lim, Sung Jin Kim, Se Ho Park, Kyu Won Kim, Yun Tae Kim
  • Patent number: 7398015
    Abstract: Provided is an apparatus for controlling fluid-heating using a polymer disk, which includes: a pump for discharging fluid at a uniform flow rate; a fluid-heating module including a polymer disk to convey the fluid discharged from the pump to allow a temperature of the fluid to periodically vary; and a controller for controlling the temperature of the fluid-heating module, whereby it is possible to be adapted to a fluid device for biochemical reaction such as DNA amplification, and simply used as a disposable device, which is low cost and readily manufactured in a multiple manner.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: July 8, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Hyo Chung, Se Ho Park, Dae Sik Lee, Hyeon Bong Pyo, Chang Auck Choi
  • Publication number: 20080135502
    Abstract: Provided is a blood plasma separator for separating blood plasma and blood cells from whole blood without an additional complicated structure by passing the whole blood through a micro channel having a predetermined shape to make the whole blood flow turbulently and cause a velocity difference or deflection between flows of the blood plasma and the blood cells of the whole blood, and a blood plasma separation method thereof. The blood plasma separator includes: a body; a micro channel formed in the body to allow blood to pass therethrough; a separation member formed at the micro channel to make flow of blood cells or blood plasma turbulent to separate the blood cells from the blood plasma; an inlet connected to the micro channel and configured to introduce blood into the micro channel; and an outlet connected to the micro channel and configured to discharge blood from the micro channel.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 12, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Hyeon-Bong PYO, Kwang-Hyo CHUNG, Young-Jun KIM, Se-Ho PARK, Seon-Hee PARK, Won-Ick JANG, Dae-Sik LEE
  • Publication number: 20080131956
    Abstract: Provided is a natural convection-driven polymerase chain reaction (PCR) apparatus and method, which can periodically change temperature of a sample to make a natural convection-driven flow in a loop-shaped channel on a disposable polymer chip and contacting heating metal members maintained at different temperatures with channels. The natural convection-driven PCR apparatus includes: a polymer chip having a plurality of channels connected together to form a loop-shaped microchannel, a sample being filled inside the channels; a plurality of heating metal members contacting the loop-shaped microchannel of the polymer chip and transferring heat; a temperature controller connected to the heating metal members to maintain the heating metal members at different temperatures; a plurality of heaters connected to the heating metal members and the temperature controller to supply heat to the heating metal members; and temperature sensors connected to the heating metal members and the temperature controller.
    Type: Application
    Filed: October 3, 2007
    Publication date: June 5, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kwang-Hyo CHUNG, Dae-Sik Lee, Hyeon-Bong Pyo, Seon-Hee Park
  • Publication number: 20080128341
    Abstract: Provided is a micro filtration device for separating blood plasma from whole blood without external actuation, and a method for fabricating the micro filtration device. The micro filtration device for separating blood plasma from whole blood includes: a whole blood inlet through which whole blood is introduced; a blood plasma outlet through which blood plasma separated from whole blood is discharged; a micro channel for connecting the whole blood inlet and the blood plasma outlet; a micro pump formed under the whole blood inlet to generate an air pressure without external actuation for moving whole blood from the whole blood inlet toward the blood plasma outlet through the micro channel; and a microstructure formed in the micro channel for separating blood plasma from the whole blood.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 5, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Won-Ick JANG, Kwang-Hyo Chung, Hyeon-Bong Pyo, Seon-Hee Park
  • Publication number: 20080072964
    Abstract: Provided are a microfluidic device and a microfluidic network formed by connecting such microfluidic devices. The microfluidic device can equalize the flow of multiple microfluids in a chamber in parallel to thereby have an equal flow rate when the microfluids transferred through different flow channels join in the chamber having a changing cross-sectional area. The microfluidic device includes: multiple flow channels formed between an upper substrate and a lower substrate to transfer the microfluids and including inlets for injecting the microfluids in one side and fluid stopping surfaces for stopping the flow of the microfluids in the other side; a pressure controlling flow channel for removing a pressure difference between the microfluids; a fluid converging part for converging the microfluids; and a chamber composed of hydrophilic surfaces and hydrophobic surfaces disposed alternately in a flow direction so that the microfluids join and flow in parallel and equal.
    Type: Application
    Filed: February 15, 2007
    Publication date: March 27, 2008
    Inventors: Sung-Jin KIM, Kwang-Hyo CHUNG, Hyeon-Bong PYO
  • Publication number: 20080064086
    Abstract: Provided are a microfabricated thermal device using a thin plastic substrate, a manufacturing method thereof, a silicon micro-chamber, a double-stranded deoxyribonucleic acid (DNA) amplification chip employing the microfabricated thermal device and the silicon micro-chamber, and a manufacturing method thereof, and a DNA amplification chip array, and a method for manufacturing the DNA amplification chip array. The microfabricated thermal device using a thin plastic substrate can be used for DNA amplification, i.e., a polymerase chain reaction (PCR), which is essential to DNA related diagnosis and analysis. The plastic-based microfabricated thermal device, includes: a plastic substrate; a heating unit disposed on the top surface of the plastic substrate to supply heat to the plastic substrate; a sensing unit disposed on the top surface of the plastic substrate to detect heat; and a diffusing unit disposed on the bottom surface of the plastic substrate to diffuse heat to the plastic substrate.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 13, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dae-Sik Lee, Se-Ho Park, Kwang-Hyo Chung, Hyeon-Bong Pyo
  • Patent number: 7238324
    Abstract: A microfluidic device for controlling the flow of a micro amount of fluid is provided. The microfluidic device is manufactured by binding a sensing substrate including a sensing electrode, an electrode interconnect, and a electrode pad, with a channel substrate including at least two fluid inlet ports, a chamber, and a channel, wherein a first fluid injected via one of the fluid inlet ports flows by natural capillary force, and a second fluid injected via another fluid inlet port is forced to flow by an external pump. The microfluidic device controls fluid flow and flow stoppage by a combination of natural capillary flow and an externally applied pressure as a result of the action of a pump.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: July 3, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jong Soo Ko, Hyun Chul Yoon, Hae Sik Yang, Dae-Sik Lee, Kwang Hyo Chung, Hyeon Bong Pyo, Sung Jin Kim, Yun Tae Kim
  • Publication number: 20060127070
    Abstract: Provided is an apparatus for controlling fluid-heating using a polymer disk, which includes: a pump for discharging fluid at a uniform flow rate; a fluid-heating module including a polymer disk to convey the fluid discharged from the pump to allow a temperature of the fluid to periodically vary; and a controller for controlling the temperature of the fluid-heating module, whereby it is possible to be adapted to a fluid device for biochemical reaction such as DNA amplification, and simply used as a disposable device, which is low cost and readily manufactured in a multiple manner.
    Type: Application
    Filed: July 25, 2005
    Publication date: June 15, 2006
    Inventors: Kwang Hyo Chung, Se Ho Park, Dae Sik Lee, Hyeon Bong Pyo, Chang Auck Choi
  • Publication number: 20040091399
    Abstract: Disclosed is to a device for exchanging minimum amount of the fluid only by using surface tension of the fluid instead of external force like a pump. According to the device, an additional pump and power supply is not needed, thereby the device can be small sized and portable, and not only manufacturing cost decreases and yield increases but the device is hardly out of order.
    Type: Application
    Filed: September 29, 2003
    Publication date: May 13, 2004
    Inventors: Kwang Hyo Chung, Jong Soo Ko, Hyun Chul Yoon, Hae Sik Yang, Hyeon Bong Pyo, Sung Jin Kim, Yun Tae Kim
  • Publication number: 20040028566
    Abstract: A microfluidic device for controlling the flow of a micro amount of fluid is provided. The microfluidic device is manufactured by binding a sensing substrate including a sensing electrode, an electrode interconnect, and a electrode pad, with a channel substrate including at least two fluid inlet ports, a chamber, and a channel, wherein a first fluid injected via one of the fluid inlet ports flows by natural capillary force, and a second fluid injected via another fluid inlet port is forced to flow by an external pump. The microfluidic device controls fluid flow and flow stoppage by a combination of natural capillary flow and an externally applied pressure as a result of the action of a pump.
    Type: Application
    Filed: July 7, 2003
    Publication date: February 12, 2004
    Inventors: Jong Soo Ko, Hyun Chul Yoon, Hae Sik Yang, Dae-Sik Lee, Kwang Hyo Chung, Hyeon Bong Pyo, Sung Jin Kim, Yun Tae Kim