Patents by Inventor Joo-Sik Lee

Joo-Sik 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: 20240226982
    Abstract: According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 11, 2024
    Inventors: Chang Yong Lee, Sung Ryul Kim, Jeong Seok Kim, Joo Sik Hyun, Yoo Dong Chung
  • Publication number: 20240174795
    Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.
    Type: Application
    Filed: August 11, 2023
    Publication date: May 30, 2024
    Inventors: Do Young Kim, Hyun Sik Yang, Yu Hyun Kim, Ki Yup Kim, Joo Hyun Nam, Chul Soon Moon, Ji Hae Park, Sung Won Lee, Jun Haeng Lee, Ho Seung Lee
  • Patent number: 11987667
    Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.
    Type: Grant
    Filed: August 11, 2023
    Date of Patent: May 21, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Do Young Kim, Hyun Sik Yang, Yu Hyun Kim, Ki Yup Kim, Joo Hyun Nam, Chul Soon Moon, Ji Hae Park, Sung Won Lee, Jun Haeng Lee, Ho Seung Lee
  • Publication number: 20240149322
    Abstract: According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 9, 2024
    Inventors: Chang Yong Lee, Sung Ryul Kim, Jeong Seok Kim, Joo Sik Hyun, Yoo Dong Chung, Soon Geun Jang
  • Patent number: 11975375
    Abstract: According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: May 7, 2024
    Assignee: Hyundai Steel Company
    Inventors: Chang Yong Lee, Sung Ryul Kim, Jeong Seok Kim, Joo Sik Hyun, Yoo Dong Chung, Soon Geun Jang
  • Publication number: 20240131569
    Abstract: According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.
    Type: Application
    Filed: December 29, 2023
    Publication date: April 25, 2024
    Inventors: Chang Yong Lee, Sung Ryul Kim, Jeong Seok Kim, Joo Sik Hyun, Yoo Dong Chung
  • Patent number: 11961441
    Abstract: A display device includes a display panel having flexibility, a storage connected to a first end of the display panel and accommodating the display panel so that the display panel is inserted and withdrawn, an extension part connected to a second end of the display panel, which is opposite to the first end of the display panel, and facing one side of the storage in a first direction, and a display driving integrated circuit which receives image data and a control signal from a host and provides a data signal to the display panel. The display driving integrated circuit includes a data processor which receives a smart size change signal from the host and sets a non-active area of the display panel based on the smart size change signal.
    Type: Grant
    Filed: October 21, 2022
    Date of Patent: April 16, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joo Hyung Lee, Chun Sik Byun, Ho Seok Han
  • Publication number: 20240115545
    Abstract: The present invention relates to a pharmaceutical composition containing ?-lapachone as an active ingredient for prevention or treatment of cholestatic liver disease, and can provide agents for effectively preventing and treating cholestatic liver disease.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 11, 2024
    Applicant: CUROME BIOSCIENCES CO., LTD.
    Inventors: Joo Seog YOON, Kang Sik SEO, Jeong Su HAN, Sung Je MOON, Jung Hoon LEE, Soo Bin YOON
  • Publication number: 20240120613
    Abstract: A crosslinked polyolefin separator having an average value of light transmittance of 30% or more in a region of 380 nm to 700 nm, after four sides of the separator are fixed and allowed to stand at 130° C. for 30 minutes. A method for manufacturing the crosslinked polyolefin separator is also provided. The crosslinked polyolefin separator has a low shutdown temperature to provide improved safety. The crosslinked polyolefin separator also has a high meltdown temperature and is inhibited from die-drooling.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 11, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Won-Sik Bae, Joo-Sung Lee, Bi-Oh Ryu, A-Young Lee
  • Publication number: 20240120459
    Abstract: A method of preparing a positive electrode active material having a high ratio of charge and discharge capacity at a charge end voltage of 4.1 V to 4.175 V to charge and discharge capacity at a charge end voltage of 4.2 V to 4.275 V and having an excellent initial charge and discharge capacity is provided.
    Type: Application
    Filed: November 24, 2022
    Publication date: April 11, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min Kyu You, Sun Sik Shin, Joo Hong Jin, June Woo Lee, Ji A Shin, Min Joo Park
  • Patent number: 11940368
    Abstract: Disclosed is a method for pre-detecting a defective porous polymer substrate for a separator, including selecting a porous polymer substrate having a plurality of pores; observing the selected porous polymer substrate with a scanning electron microscope (SEM) to obtain an image of the porous polymer substrate; quantifying the average value of pore distribution index (PDI); correcting the quantified average value of pore distribution index to obtain the corrected average value of pore distribution index; determining whether or not the corrected average value of pore distribution index is 60 a.u. (arbitrary unit) or less; and classifying the porous polymer substrate as a good product, when the corrected average value of pore distribution index is determined to be 60 a.u. or less, and classifying the porous polymer substrate as a defective product, when the corrected average value of pore distribution index is determined to be larger than 60 a.u.
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: March 26, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Won-Sik Bae, Joo-Sung Lee, Ho-Sung Kang, Yern-Seung Kim, Se-Jung Park, Je-Seob Park, Ji-Young Hwang
  • Patent number: 9684299
    Abstract: The present disclosure relates to a system and a method for managing machine tool information for heterogeneous numerical control devices, and more particularly, to a system and a method for managing machine tool information for heterogeneous numerical control devices which may manage data of heterogeneous numerical control devices by a mobile device through a network, such as a wide area Internet or local WiFi, and monitor an operational state of the machine tool.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: June 20, 2017
    Assignee: Doosan Machine Tools Co., Ltd.
    Inventors: Dae Hyuk Chung, Jang Nam Han, Jong Tae Kim, Jong Myoung Park, Joo Sik Lee
  • Patent number: 9507340
    Abstract: A tool path part program modification system of an NC machine tool according to an aspect of the present disclosure, includes: a human-machine interface unit which receives a tool path part program having one or more processing blocks; an NC kernel unit which interprets the part program inputted to the human-machine interface unit for each processing block, and generates each processing block information; a tool path modification module unit which sequentially calls the processing block information interpreted by the NC kernel unit, and modifies a consecutive rapid transfer processing block group such that tool paths are reduced, when the consecutive rapid transfer processing block group is present in which the predetermined reference number or more of processing blocks including rapid transfer commands are consecutively included; and a simulator unit which simulates the part program for each processing block interpreted by the NC kernel unit.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: November 29, 2016
    Assignee: Doosan Machine Tools Co., Ltd.
    Inventors: Dae Hyuk Chung, Jong Myoung Park, Joo Sik Lee
  • Patent number: 9129282
    Abstract: The present disclosure provides a terminal comprising: a socket configured to receive a security module; an NFC (Near Field Communication) unit configured to communicate with an external reader or another terminal; and a protocol identifying unit configured to supply a voltage to the security module and to identify whether the security module supports a first protocol by transmitting a signal for using the first protocol through a first contact of the security module and receiving from the security module a first information associated with a protocol supported by the security module, wherein the terminal additionally receives a second information associated with the protocol supported by the security module through a second contact of the security module, and wherein the NFC unit receives a information from the security module through the first contact based on the first protocol identified by the protocol identifying unit, and transmits the received information to the external reader or another terminal.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: September 8, 2015
    Assignee: SK TELECOM CO., LTD.
    Inventors: Sung-Rock Cheon, Jae-Sic Jeon, O-Hyon Kwon, Joo-Sik Lee
  • Publication number: 20140371898
    Abstract: The present disclosure relates to a system and a method for managing machine tool information for heterogeneous numerical control devices, and more particularly, to a system and a method for managing machine tool information for heterogeneous numerical control devices which may manage data of heterogeneous numerical control devices by a mobile device through a network, such as a wide area Internet or local WiFi, and monitor an operational state of the machine tool.
    Type: Application
    Filed: October 18, 2012
    Publication date: December 18, 2014
    Inventors: Dae Hyuk Chung, Jang Nam Han, Jong Tae Kim, Jong Myoung Park, Joo Sik Lee
  • Publication number: 20130253694
    Abstract: A tool path part program modification system of an NC machine tool according to an aspect of the present disclosure, includes: an HMI unit which receives a tool path part program having one or more processing blocks which automate and perform tool paths for processing a work piece by using tools of the NC machine tool; an NC kernel unit which interprets the part program inputted to the HMI unit for each processing block, and generates each processing block information; a tool path modification module unit which sequentially calls the processing block information interpreted by the NC kernel unit, and modifies a consecutive rapid transfer processing block group such that tool paths are reduced and collision between the tool and the work piece does not occur, when the consecutive rapid transfer processing block group is present in which the predetermined reference number or more of processing blocks including rapid transfer commands are consecutively included; and a simulator unit which simulates the part progr
    Type: Application
    Filed: November 1, 2011
    Publication date: September 26, 2013
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Dae Hyuk Chung, Jong Myoung Park, Joo Sik Lee
  • Patent number: 8265553
    Abstract: Disclosed herein are an external device for a mobile communication terminal, which enables non-contact NFC with the outside through a Near Field Communication (NFC) unit, and an NFC method using the external device. The external device for a mobile communication terminal includes a serial communication unit, an NFC unit, a smart card unit and an antenna. The serial communication unit is connected to a mobile communication terminal body through a connector. The NFC unit communicates with the mobile communication terminal body through the serial communication unit and communicates with the outside via non-contact NFC. The smart card unit communicates with the NFC unit. The antenna is configured such that the NFC unit transmits/receives signals via non-contact NFC through the antenna.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: September 11, 2012
    Assignee: SK Planet Co., Ltd.
    Inventors: Sung-Rock Cheon, Jae-Sic Jeon, O-Hyon Kwon, Joo-Sik Lee
  • Publication number: 20120220229
    Abstract: The present disclosure provides a terminal comprising: a socket configured to receive a security module; an NFC (Near Field Communication) unit configured to communicate with an external reader or another terminal; and a protocol identifying unit configured to supply a voltage to the security module and to identify whether the security module supports a first protocol by transmitting a signal for using the first protocol through a first contact of the security module and receiving from the security module a first information associated with a protocol supported by the security module, wherein the terminal additionally receives a second information associated with the protocol supported by the security module through a second contact of the security module, and wherein the NFC unit receives a information from the security module through the first contact based on the first protocol identified by the protocol identifying unit, and transmits the received information to the external reader or another terminal.
    Type: Application
    Filed: May 10, 2012
    Publication date: August 30, 2012
    Applicant: SK TELECOM CO., LTD.
    Inventors: Sung-Rock CHEON, Jae-Sic JEON, O-Hyon KWON, Joo-Sik LEE
  • Patent number: 8209754
    Abstract: A secure NFC apparatus includes a plug-in socket, an NFC unit, and a protocol matching unit. A security module is inserted in the plug-in socket. The NFC unit communicates with the outside via non-contact NFC using signals based on an S2C protocol. The protocol matching unit determines the type of chip in the inserted security module, generates a chip identification signal according to results of the identification, and matches the protocol of the signals based on the S2C protocol, which are input to and output from the NFC unit, with the protocol of the signals, which are input to and output from the security module, according to the chip identification signal.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: June 26, 2012
    Assignee: SK Telecom Co., Ltd.
    Inventors: Sung-Rock Cheon, Jae-Sic Jeon, O-Hyon Kwon, Joo-Sik Lee
  • Patent number: 8082445
    Abstract: Disclosed herein are a secure Near Field Communication (NFC) apparatus and method for supporting various security modules. The NFC apparatus includes an NFC unit, a protocol conversion unit and a security module. The NFC unit transmits information corresponding to a first signal based on a first protocol via non-contact NFC and generates a second signal based on the first protocol from information received via non-contact NFC. The protocol conversion unit converts a signal based on a second protocol into a first signal based on the first protocol and converts the second signal based on the first protocol into a signal based on the second protocol. The security module receives and outputs signals based on the second protocol.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 20, 2011
    Assignee: SK Telecom Co., Ltd.
    Inventors: Sung-Rock Cheon, Jae-Sic Jeon, O-Hyon Kwon, Joo-Sik Lee