Patents by Inventor Ju-Seok Lee

Ju-Seok 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).

  • Patent number: 9553624
    Abstract: Disclosed are a card socket device and an electronic apparatus including the same. The card socket device includes a seat portion configured to receive an attachable card; and one or more connection terminal portions formed in the seat portion and configured to form an electrical connection with one or more connection pads formed in a bottom surface of the attachable card, wherein the seat portion is configured such that a space accommodating the attachable card is upwardly opened.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: January 24, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-bum Lee, Ki-sun Kim, Jong-rak Sohn, Seok-chan Lee, Dong-min Kim, Ju-seok Lee
  • Publication number: 20160049977
    Abstract: Disclosed are a card socket device and an electronic apparatus including the same. The card socket device includes a seat portion configured to receive an attachable card; and one or more connection terminal portions formed in the seat portion and configured to form an electrical connection with one or more connection pads formed in a bottom surface of the attachable card, wherein the seat portion is configured such that a space accommodating the attachable card is upwardly opened.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 18, 2016
    Inventors: Jae-bum LEE, Ki-sun KIM, Jong-rak SOHN, Seok-chan LEE, Dong-min KIM, Ju-seok LEE
  • Patent number: 8889278
    Abstract: A contact pad configured to sense the voltage of a cell module assembly including at least one battery cell, is electrically connected to a voltage sensing module for measuring the voltage of the battery cell in the cell module assembly and electrically contacted with an electrode of the battery cell, and is made of a conductive organic elastomer, thereby improving reliability of electrical contact with each battery cell, and effectively preventing malfunction of the cell module assembly caused by impurities, external physical shocks and so on.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: November 18, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Seok Lee, Jin-Kyu Shin, John E. NamGoong
  • Patent number: 8742764
    Abstract: To check insulation of a pouch electric cell, probes are contacted to an electrode of a pouch electric cell and an aluminum layer of a pouch of the pouch electric cell, respectively, and then an electric characteristic value between the probes is measured. The probe contacted with the aluminum layer has a contact portion made of conductive elastic material. Also, insulation of the pouch electric cell is determined by comparing the measured electric characteristic value with a reference value. Thus, physical characteristics of an outer periphery of a flexible pouch may be sufficiently exhibited in measuring or checking insulation of a pouch electric cell such as insulation resistance, thereby improving reliability of electric contact and minimizing physical damage or deformation of the pouch electric cell.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: June 3, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Seok Lee, Hey-Woong Park, Ju-Young Kim, John E. Namgoong
  • Patent number: 8359175
    Abstract: An apparatus for checking insulation of a cell module assembly composed of a plurality of pouch cells includes a first probing unit electrically contacted to an electrode of the cell module assembly; a second probing unit electrically contacted to aluminum films of selected ones of the pouch cells in the cell module assembly; and a measuring unit for measuring an insulation resistance between the first probing unit and the second probing unit. This apparatus may measure insulation resistances of a plurality of pouch cells of the cell module assembly at once, thereby ensuring faster insulation checking.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: January 22, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Seok Lee, John E. NamGoong
  • Patent number: 8243530
    Abstract: A non-volatile memory device includes a feedback circuit and a precharge switching transistor. The feedback circuit generates a feedback signal based on a voltage level of a bitline during a precharge operation. The precharge switching transistor, in response to the feedback signal, controls a precharge current for precharging the bitline. The speed of the precharge operation may be increased and/or mismatch of the bias signals in precharging a plurality of bitlines may be reduced.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 14, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Gu Kang, Hee-Won Lee, Ju-Seok Lee, Jung-Ho Song
  • Publication number: 20120019256
    Abstract: To check insulation of a pouch electric cell, probes are contacted to an electrode of a pouch electric cell and an aluminum layer of a pouch of the pouch electric cell, respectively, and then an electric characteristic value between the probes is measured. The probe contacted with the aluminum layer has a contact portion made of conductive elastic material. Also, insulation of the pouch electric cell is determined by comparing the measured electric characteristic value with a reference value. Thus, physical characteristics of an outer periphery of a flexible pouch may be sufficiently exhibited in measuring or checking insulation of a pouch electric cell such as insulation resistance, thereby improving reliability of electric contact and minimizing physical damage or deformation of the pouch electric cell.
    Type: Application
    Filed: October 12, 2009
    Publication date: January 26, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Ju-Seok Lee, Hey-Woong Park, Ju-Young Kim, John E. Namgoong
  • Patent number: 8054692
    Abstract: A flash memory device controls a common source line voltage and performs a program verify method. A plurality of memory cells is connected between a bit line and the common source line. A data input/output circuit is connected to the bit line and is configured to store data to be programmed in a selected memory cell of the plurality of memory cells. The data input/output circuit maintains data to be programmed within the data input/output circuit during a program verify operation, and decreases noise in the common source line by selectively precharging the bit line based on the data to be programmed.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: November 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-gu Kang, Hee-Won Lee, Ju-Seok Lee, Jung-Ho Song
  • Publication number: 20110223453
    Abstract: A contact pad configured to sense the voltage of a cell module assembly including at least one battery cell, is electrically connected to a voltage sensing module for measuring the voltage of the battery cell in the cell module assembly and electrically contacted with an electrode of the battery cell, and is made of a conductive organic elastomer, thereby improving reliability of electrical contact with each battery cell, and effectively preventing malfunction of the cell module assembly caused by impurities, external physical shocks and so on.
    Type: Application
    Filed: July 22, 2009
    Publication date: September 15, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Ju-Seok Lee, Jin-Kyu Shin, John E. NamGoong
  • Publication number: 20110191043
    Abstract: An apparatus for checking insulation of a cell module assembly composed of a plurality of pouch cells includes a first probing unit electrically contacted to an electrode of the cell module assembly; a second probing unit electrically contacted to aluminum films of selected ones of the pouch cells in the cell module assembly; and a measuring unit for measuring an insulation resistance between the first probing unit and the second probing unit. This apparatus may measure insulation resistances of a plurality of pouch cells of the cell module assembly at once, thereby ensuring faster insulation checking.
    Type: Application
    Filed: October 12, 2009
    Publication date: August 4, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Ju-Seok Lee, John E. NamGoong
  • Publication number: 20100220535
    Abstract: A non-volatile memory device includes a feedback circuit and a precharge switching transistor. The feedback circuit generates a feedback signal based on a voltage level of a bitline during a precharge operation. The precharge switching transistor, in response to the feedback signal, controls a precharge current for precharging the bitline. The speed of the precharge operation may be increased and/or mismatch of the bias signals in precharging a plurality of bitlines may be reduced.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 2, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Gu Kang, Hee-Won Lee, Ju-Seok Lee, Jung-Ho Song
  • Publication number: 20100002507
    Abstract: A flash memory device controls a common source line voltage and performs a program verify method. A plurality of memory cells is connected between a bit line and the common source line. A data input/output circuit is connected to the bit line and is configured to store data to be programmed in a selected memory cell of the plurality of memory cells. The data input/output circuit maintains data to be programmed within the data input/output circuit during a program verify operation, and decreases noise in the common source line by selectively precharging the bit line based on the data to be programmed.
    Type: Application
    Filed: May 27, 2009
    Publication date: January 7, 2010
    Inventors: Sang-gu Kang, Hee-Won Lee, Ju-Seok Lee, Jung-Ho Song