Patents by Inventor Chi-Hwan Lee

Chi-Hwan Lee 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: 20210180220
    Abstract: A functional fabric in which a microcurrent is applied according to the present invention comprises water-dispersion polyurethane, graphite, water (H2O), and a thickener.
    Type: Application
    Filed: November 23, 2017
    Publication date: June 17, 2021
    Inventors: Yeon Sook WEON, Han Sung KIM, Seung Kwan CHO, Seong Guk KIM, Chi Hwan LEE, Ki Pyoung YANG
  • Patent number: 11000082
    Abstract: Electronic assistive gloves for covering artificial prosthetic or robotic hands. The glove includes a base layer formed to fit on the artificial hand, a plurality of sensors carried by the base layer, and an encapsulation layer covering the base layer and formed of a material that mimics human skin.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: May 11, 2021
    Assignee: Purdue Research Foundation
    Inventors: Chi Hwan Lee, Min Ku Kim
  • Publication number: 20210085517
    Abstract: The invention relates to electronic contact lens systems, methods for fabrication thereof, and uses thereof for treatment of ophthalmic diseases and conditions, for example, meibomian gland dysfunction.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Applicant: PURDUE RESEARCH FOUNDATION
    Inventor: Chi Hwan LEE
  • Publication number: 20210057480
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and cis amole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Application
    Filed: November 6, 2020
    Publication date: February 25, 2021
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Patent number: 10864111
    Abstract: The invention relates to electronic contact lens systems, methods for fabrication thereof, and uses thereof for treatment of ophthalmic diseases and conditions, for example, meibomian gland dysfunction.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: December 15, 2020
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventor: Chi Hwan Lee
  • Patent number: 10854666
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and c is a mole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 1, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Publication number: 20200370000
    Abstract: Systems and methods for monitoring and tracking the behavior of cells and tissues in a culturing medium, for example, in a cell culture medium or an in vivo tissue environment, using a tissue scaffold system having one or more sensor arrays. Such monitoring systems include a tissue scaffold system and one or more sensor arrays on the tissue scaffold system in vertically stackable configurations. The sensor array(s) are configured to monitor electrical impedance and/or electrophysiological activities of cells or tissues which may be provided to an external data acquisition system for production of a three-dimensional (3D) map.
    Type: Application
    Filed: May 26, 2020
    Publication date: November 26, 2020
    Inventor: Chi-Hwan Lee
  • Publication number: 20200353246
    Abstract: The present invention relates to a skin attachment connecting device and, more specifically, to a skin attachment connecting device for applying a micro-electric current for a cell movement of the skin, wherein a protrusion part comes into contact with a skin attachment while the connecting device formed in a tong shape picks up the attachment formable in various shapes, such that a micro-electric current is applied to the skin attachment. In order to achieve the purpose as described above, a connecting device for applying power transferred from a power supply device to a skin attachment, according to the present invention, is formed in a tong shape and comprises, therein, a connection part for applying power transferred from the power supply device to the skin attachment while contacting the skin attachment.
    Type: Application
    Filed: August 2, 2018
    Publication date: November 12, 2020
    Inventors: Han Sung KIM, Seung Kwan CHO, Chang Yeon WON, Chi Hwan LEE, Jong Kyu PARK
  • Publication number: 20190245003
    Abstract: A protective film composition includes a polymer having the following formula: each of a, b, and c is a mole fraction; a+b+c=1; 0.05?a/(a+b+c)?0.3; 0.1?b/(a+b+c)?0.6; 0.1?c/(a+b+c)?0.6; each of R1, R2, and R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom, a butyrolactonyl group, or a substituted or unsubstituted C3 to C30 alicyclic hydrocarbon group; and R5 is a substituted or unsubstituted C6 to C30 linear or cyclic hydrocarbon group. A method of manufacturing a semiconductor package includes forming a sawing protective film on a semiconductor structure by using the protective film composition and sawing the sawing protective film and the semiconductor structure from the sawing protective film.
    Type: Application
    Filed: December 21, 2018
    Publication date: August 8, 2019
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: Myoung-chul Eum, Hye-kyoung Lee, Chang-kun Kang, Jae-hyun Kim, Kyeong-il Oh, Seung-keun Oh, Chi-hwan Lee
  • Patent number: 10154592
    Abstract: The invention provides transient devices, including active and passive devices that electrically and/or physically transform upon application of at least one internal and/or external stimulus. Materials, modeling tools, manufacturing approaches, device designs and system level embodiments of transient electronics are provided.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: December 11, 2018
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: John A. Rogers, Chi Hwan Lee, Lan Yin, Xian Huang, Cecilia Maria das Neves Barbosa Leal, Daniel Vincent Harburg
  • Publication number: 20180271393
    Abstract: Skin-mountable electronic devices and methods suitable for fabricating and using the devices. One embodiment of such a device includes a flexible structure comprising a pattern of individual interconnected traces each comprising a portion of an electrically-conductive layer that overlies and directly contacts an underlying portion of an elastomeric layer. At least some of the portions of the electrically-conductive layer within the pattern are functional electrodes of the skin-mountable electronic device.
    Type: Application
    Filed: January 22, 2018
    Publication date: September 27, 2018
    Inventors: Chi Hwan Lee, Georgia Malandraki
  • Publication number: 20180235293
    Abstract: Electronic assistive gloves for covering artificial prosthetic or robotic hands. The glove includes a base layer formed to fit on the artificial hand, a plurality of sensors carried by the base layer, and an encapsulation layer covering the base layer and formed of a material that mimics human skin.
    Type: Application
    Filed: February 22, 2018
    Publication date: August 23, 2018
    Inventors: Chi Hwan Lee, Min Ku Kim
  • Publication number: 20170273731
    Abstract: The invention relates to electronic contact lens systems, methods for fabrication thereof, and uses thereof for treatment of ophthalmic diseases and conditions, for example, meibomian gland dysfunction.
    Type: Application
    Filed: March 20, 2017
    Publication date: September 28, 2017
    Inventor: Chi Hwan LEE
  • Patent number: 9435323
    Abstract: A pump for supplying a cryogenic liquid coolant in accordance with the present invention includes: a housing having an inlet port for introducing a cryogenic liquid coolant, an outlet port for discharging the cryogenic liquid coolant introduced through the inlet port, and a chamber for connecting the inlet port and the outlet port; an impeller rotatably retained in the housing for introducing the cryogenic liquid coolant through the inlet port and discharging the same through the outlet port; and a vapor exhausting part provided in the housing for exhausting vapor generated from the cryogenic liquid coolant.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: September 6, 2016
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventors: Je Heon Jung, Jung Hyun Lee, Woon Sik Kwon, Heui Joo Park, Chi Hwan Lee, Yeong Chun Kim
  • Patent number: 9337169
    Abstract: A device fabrication method includes: (1) providing a growth substrate including an oxide layer; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing fluid-assisted interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 10, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Chi-Hwan Lee, Dong Rip Kim, Xiaolin Zheng
  • Patent number: 9171605
    Abstract: Provided is a method of detecting a concentrated address of a semiconductor device using an n-bit address. The method includes dividing the n-bit address into k groups, wherein each of n and k is an integer equal to or greater than 2, for each group of the k groups, detecting one or more concentrated sub addresses corresponding to the group, and generating at least one concentrated address by combining the one or more concentrated sub addresses for the k groups.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 27, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-Sik Kim, Won-Il Bae, Myeong-O Kim, Min-Soo Kim, Ho-Seok Seol, Min-Sang Park, Kyo-Min Sohn, Chi-Hwan Lee, Sang-Joon Hwang
  • Publication number: 20140335678
    Abstract: A device fabrication method includes: (1) providing a growth substrate including an oxide layer; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing fluid-assisted interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.
    Type: Application
    Filed: July 24, 2014
    Publication date: November 13, 2014
    Inventors: Chi-Hwan Lee, Dong Rip Kim, Xiaolin Zheng
  • Publication number: 20140323968
    Abstract: The invention provides transient devices, including active and passive devices that electrically and/or physically transform upon application of at least one internal and/or external stimulus. Materials, modeling tools, manufacturing approaches, device designs and system level embodiments of transient electronics are provided.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 30, 2014
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: John A. ROGERS, Chi Hwan LEE, Lan YIN, Xian HUANG, Cecilia Maria das Neves Barbosa LEAL, Daniel Vincent HARBURG
  • Patent number: 8841803
    Abstract: A superconducting rotating machine having a cooler for a rotator is provided. The superconducting rotating machine includes a rotator wound with a superconducting coil, a stator enclosing the rotator and separated therefrom by a predetermined gap, the cooler having a cold head directly attached to the rotator and at least one compressor connected with the cold head, and a flexible coupling disposed between the cold head and the compressor and enabling a cryogenic refrigerant to flow therein. The cold head is directly connected to the rotator, and the cold head and the compressor are driven using the flexible coupling, so that it is possible to prevent vibration of the compressor and enhance cooling efficiency by thermally separating the cryogenic cold head from the compressor.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: September 23, 2014
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Jung Hyun Lee, Je Heon Jung, Woon Sik Kwon, Heui Joo Park, Chi Hwan Lee, Yeong Chun Kim
  • Patent number: 8815707
    Abstract: A device fabrication method includes: (1) providing a growth substrate including a base and an oxide layer disposed over the base; (2) forming a metal layer over the oxide layer; (3) forming a stack of device layers over the metal layer; (4) performing interfacial debonding of the metal layer to separate the stack of device layers and the metal layer from the growth substrate; and (5) affixing the stack of device layers to a target substrate.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 26, 2014
    Assignee: Board of Trustess of the Leland Stanford Junior University
    Inventors: Chi-Hwan Lee, Dong Rip Kim, Xiaolin Zheng