Patents by Inventor Kee Ryu

Kee Ryu 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).

  • Patent number: 9772660
    Abstract: The present invention relates to a tablet capable of sensing a location using electromagnetic induction and electrostatic capacitance.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: September 26, 2017
    Assignee: THE HAN INC.
    Inventor: Young Kee Ryu
  • Publication number: 20170123569
    Abstract: A multi-input pad for simultaneously sensing a capacitive touch and an induced electromagnetic field input includes a plurality of first patterns extending in a first direction in a sensing area, a plurality of second patterns extending in a second direction in the sensing area, a plurality of third patterns extending in the second direction in the sensing area, and a common loop surrounding at least a part of the sensing area and to which the other ends of the third patterns are connected. The multi-input pad operating in a capacitive touch sensing mode and an induced electromagnetic field sensing mode may simultaneously sense a capacitive touch and an induced electromagnetic field input.
    Type: Application
    Filed: June 4, 2015
    Publication date: May 4, 2017
    Inventors: Sae Young KIM, Sang Sup AHN, Young Kee RYU
  • Publication number: 20160179134
    Abstract: The present invention relates to a tablet capable of sensing a location using electromagnetic induction and electrostatic capacitance.
    Type: Application
    Filed: July 2, 2014
    Publication date: June 23, 2016
    Applicant: THE HAN INC.
    Inventor: Young Kee RYU
  • Patent number: 9256339
    Abstract: The present invention relates to a tablet having a flexible and transparent sensing area, comprising: an insulating transparent base material having a first loop antenna and a plurality of comb-shaped first line antennas; and a control substrate having, mounted thereon, a first multiplexer (MUX) for selecting one of the ends of the plurality of first line antennas, an amplifier for outputting a potential difference between an output of the first multiplexer and the first loop antenna, and an MCU (micro controller unit) for generating a first selection signal and, on the basis of the potential difference from the amplifier, sensing the position of an electronic pen from one line antenna. The first loop antenna formed on the transparent base material is combined with a first conductive pattern formed on the control substrate, thereby forming a closed loop.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: February 9, 2016
    Assignee: THE HAN INC.
    Inventor: Young Kee Ryu
  • Publication number: 20150009623
    Abstract: The present invention relates to a tablet having a flexible and transparent sensing area, comprising: an insulating transparent base material having a first loop antenna and a plurality of comb-shaped first line antennas; and a control substrate having, mounted thereon, a first multiplexer (MUX) for selecting one of the ends of the plurality of first line antennas, an amplifier for outputting a potential difference between an output of the first multiplexer and the first loop antenna, and an MCU (micro controller unit) for generating a first selection signal and, on the basis of the potential difference from the amplifier, sensing the position of an electronic pen from one line antenna. The first loop antenna formed on the transparent base material is combined with a first conductive pattern formed on the control substrate, thereby forming a closed loop.
    Type: Application
    Filed: February 20, 2013
    Publication date: January 8, 2015
    Inventor: Young Kee Ryu
  • Patent number: 8431080
    Abstract: A microscale polymer-based apparatus comprises a substrate formed from a first polymer material and at least one active region integrated with the substrate. The at least one active region is patterned from a second polymer material that is modified to perform at least one function within the at least one active region.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: April 30, 2013
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Chang Liu, Jonathan Engel, Kee Ryu
  • Patent number: 7838321
    Abstract: This describes a starting structure and method for forming a micro-mechanical device. These devices have several uses in both government and commercial applications. The starting structure can be sold or supplied to others who will then make a final product, or it can be used directly to make a final product. An appropriate use of this starting structure is to make deformable devices useful in an inkjet printing device.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: November 23, 2010
    Assignee: Xerox Corporation
    Inventors: Peter J. Nystrom, Nancy Jia, Kee Ryu
  • Patent number: 7737045
    Abstract: A fluid delivery system including a first substrate having a micro-channel and a well both formed through the first substrate. The fluid delivery system also includes a second substrate and a delivery channel. The second substrate is on the first substrate and the delivery channel is formed between the first and second substrates. The delivery channel provides fluid communication between the micro-channel and the well.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: June 15, 2010
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Chang Liu, Kee Ryu, David Bullen
  • Publication number: 20100072565
    Abstract: A microscale polymer-based apparatus comprises a substrate formed from a first polymer material and at least one active region integrated with the substrate. The at least one active region is patterned from a second polymer material that is modified to perform at least one function within the at least one active region.
    Type: Application
    Filed: June 1, 2007
    Publication date: March 25, 2010
    Inventors: Chang Liu, Jonathan Engel, Kee Ryu
  • Patent number: 7351303
    Abstract: Microfluidic systems and components. A microfluidic system includes one or more functional units or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microfluidic system includes a separate dedicated fluid layer and dedicated electromechanical layer connected via through-holes. Electromechanical components are formed on the electromechanical layer.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 1, 2008
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Chang Liu, Kashan Shaikh, Kee Ryu, Edgar Goluch, Zhifang Fan, David Bullen
  • Publication number: 20080017306
    Abstract: Microfluidic systems and components. A microfluidic system includes one or more functional units or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microfluidic system includes a separate dedicated fluid layer and dedicated electromechanical layer connected via through-holes. Electromechanical components are formed on the electromechanical layer.
    Type: Application
    Filed: October 9, 2003
    Publication date: January 24, 2008
    Inventors: Chang Liu, Kashan Shaikh, Kee Ryu, Edgar Goluch, Zhifang Fan, David Bullen
  • Publication number: 20070163647
    Abstract: A fluid delivery system including a first substrate having a micro-channel and a well both formed through the first substrate. The fluid delivery system also includes a second substrate and a delivery channel. The second substrate is on the first substrate and the delivery channel is formed between the first and second substrates. The delivery channel provides fluid communication between the micro-channel and the well.
    Type: Application
    Filed: March 6, 2007
    Publication date: July 19, 2007
    Inventors: Chang Liu, Kee Ryu, David Bullen
  • Publication number: 20070138582
    Abstract: This describes a starting structure and method for forming a micro-mechanical device. These devices have several uses in both government and commercial applications. The starting structure can be sold or supplied to others who will then make a final product, or it can be used directly to make a final product. An appropriate use of this starting structure is to make deformable devices useful in an inkjet printing device.
    Type: Application
    Filed: December 20, 2005
    Publication date: June 21, 2007
    Inventors: Peter Nystrom, Nancy Jia, Kee Ryu
  • Patent number: 7217396
    Abstract: A fluid delivery system including a first substrate having a micro-channel and a well both formed through the first substrate. The fluid delivery system also includes a second substrate and a delivery channel. The second substrate is on the first substrate and the delivery channel is formed between the first and second substrates. The delivery channel provides fluid communication between the micro-channel and the well.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: May 15, 2007
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Chang Liu, Kee Ryu, David Bullen
  • Publication number: 20040223886
    Abstract: A fluid delivery system including a first substrate having a micro-channel and a well both formed through the first substrate. The fluid delivery system also includes a second substrate and a delivery channel. The second substrate is on the first substrate and the delivery channel is formed between the first and second substrates. The delivery channel provides fluid communication between the micro-channel and the well.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Inventors: Chang Liu, Kee Ryu, David Bullen
  • Publication number: 20020018252
    Abstract: The contact imaging system allows the contact area of an object impressed upon the surface of the contact imaging system to emit light in a pattern corresponding to the contact area making it possible to render an image of the contact area. The contact imaging system has a luminescence layer on top of a transparent electrode. When the object to be imaged contacts the luminescence layer and is held at ground potential relative to the transparent electrode, an electric field is created in the luminescence layer in a pattern corresponding to the contact pattern. The electric field causes the luminescence layer to emit a light image of the contact pattern. The luminescence layer and the transparent electrode are adjacent to a light sensing layer. The light sensing layer receives the light generated at the luminescence layer, and converts that light into a corresponding electric signal.
    Type: Application
    Filed: September 28, 2001
    Publication date: February 14, 2002
    Applicant: Mirae Corporation
    Inventors: Ju Hyun Lee, Vladimir Vlaskin, Young Kee Ryu
  • Patent number: 6326644
    Abstract: A contact light emitting device embodying the invention includes a transparent electrode layer and a luminescence layer. The electrode layer and the luminescence layer are configured such that an electric field can be generated between the electrode layer and an object to be imaged. When the object to be imaged is brought adjacent the luminescence layer, the luminescence layer emits light, which is then converted into an electrical signal.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: December 4, 2001
    Assignee: Mirae Corporation
    Inventors: Ju Hyun Lee, Vladimir Vlaskin, Young Kee Ryu