Patents by Inventor Sang Cha

Sang Cha 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: 11964935
    Abstract: The present invention relates to a gingerol derivative having inhibitory activity against biofilm formation and a pharmaceutical composition for preventing or treating infections caused by biofilms including the gingerol derivative as an active ingredient. The gingerol derivative of the present invention exhibits significantly improved binding affinity for LasR and inhibitory activity against biofilm formation. Therefore, the gingerol derivative of the present invention can act on various membrane surfaces where biofilms tend to form and can effectively inhibit the formation of the corresponding biofilms. In addition, the use of the pharmaceutical composition according to the present invention can fundamentally prevent or treat a variety of infections caused by biofilms due to the presence of the gingerol derivative in the pharmaceutical composition.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: April 23, 2024
    Assignees: Korea University Research and Business Foundation, Sejong Campus, Korea University Research and Business Foundation
    Inventors: Youngjoo Byun, Hee-Deung Park, Sang-Hyun Son, Eunji Cha, So-Young Ham, Hyunsuk Choi
  • Patent number: 11961872
    Abstract: A unit pixel includes a transparent substrate, a plurality of light emitting devices disposed on the transparent substrate, and an electrostatic discharge (ESD) protector disposed on the transparent substrate and protecting at least one of the light emitting devices from electrostatic discharge.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: April 16, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Namgoo Cha, Sang Min Kim, Jae Hee Lim
  • Publication number: 20240120287
    Abstract: Provided is an overlay mark. The overlay mark comprises a substrate, a lower overlay in the substrate, a pattern layer on the substrate, and an upper overlay defining an opening on the pattern layer. The lower overlay does not overlap the upper overlay in a thickness direction of the substrate.
    Type: Application
    Filed: October 3, 2023
    Publication date: April 11, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang Won PARK, A Yeong CHA, Byeong-Hwan SON, Hye Jin LEE, Jung Hyun CHOI, Jong Hee HAN
  • Patent number: 11949055
    Abstract: A unit pixel includes a transparent substrate, a plurality of light emitting devices arranged on the transparent substrate, connection layers electrically connected to the light emitting devices, and bonding pads disposed over the connection layers and electrically connected to the connection layers. The bonding pads are partially overlapped with at least one of the light emitting devices in a vertical direction, respectively.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: April 2, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Namgoo Cha, Sang Min Kim, Seongchan Park, Yeonkyu Park, Jae Hee Lim, Jinkyu Jang
  • Patent number: 11946651
    Abstract: A portable air flow apparatus may include a base configured to be seated on a surface, a head comprising a suction inlet through which air is suctioned into the head and a discharge outlet through which the air suctioned in through the suction inlet is discharged, the suction inlet and the discharge outlet being horizontally spaced apart from each other at a right angle with respect to a vertical direction, and a column that connects the head and the base in such a manner that the head is vertically spaced from the base.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: April 2, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Yu Na Jo, Deukwon Lee, Taeyun Lee, Hyunbyung Cha, Sang Yoon Lee, Min Kyu Oh, Byunghoon Park, Yeon A Jo, Chang On Lee, Jihye Lee
  • Patent number: 11912787
    Abstract: Proposed is a peptide for skin anti-aging and anti-wrinkle, comprising a glycine-histidine-lysine tripeptide and polyarginine linked to the carboxy-terminus of the tripeptide, and a composition for skin anti-aging and anti-wrinkle comprising the peptide. The peptide and composition may enter the cytoplasm more rapidly and efficiently than a conventional GHK tripeptide, and may exhibit skin anti-aging and anti-wrinkle effects similar to those of the GHK tripeptide even at a lower concentration than that of the GHK tripeptide.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: February 27, 2024
    Assignee: DERMAFIRM, INC.
    Inventors: Hoon Cha, Young Il Kwon, Sang Cheol Han, Jin Wook Kim, Mi Young Lee, Ga Hee Hur
  • Patent number: 10218440
    Abstract: A visible light communication (VLC) method in which a transmission device having a display transmits a signal to a reception device having a camera according to the present invention includes outputting, by the transmission device, a visible light signal including data for transmission (referred to as “transmission data” below) through the display using at least one of a color and a pattern, and receiving, by the reception device, the visible light signal through the camera and extracting the transmission data.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: February 26, 2019
    Assignee: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventor: Jae Sang Cha
  • Patent number: 10030908
    Abstract: Disclosed herein is a natural gas liquefaction process using a single refrigeration cycle adopting a mixed refrigerant, and therefore having a simple structure and thus a compact system which is easy to operate, and further, after the mixed refrigerant is separated into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensing (cooling), expanding, heat-exchanging, and compressing stages individually, and thus, optimal temperature and pressure conditions are applied to each of the separated refrigerant parts to increase efficiency of the liquefaction process.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: July 24, 2018
    Assignee: KOREA GAS CORPORATION
    Inventors: Sang Gyu Lee, Kun Hyung Choe, Young Myung Yang, Chul Gu Lee, Kyu Sang Cha, Chang Won Park, Sung Hee Choi, Yeong Beom Lee
  • Publication number: 20180191437
    Abstract: A visible light communication (VLC) method in which a transmission device having a display transmits a signal to a reception device having a camera according to the present invention includes outputting, by the transmission device, a visible light signal including data for transmission (referred to as “transmission data” below) through the display using at least one of a color and a pattern, and receiving, by the reception device, the visible light signal through the camera and extracting the transmission data.
    Type: Application
    Filed: December 8, 2016
    Publication date: July 5, 2018
    Applicant: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventor: Jae Sang CHA
  • Patent number: 10014939
    Abstract: The present invention provides a smart device which can receive, by an image sensor of a camera, a visible light signal generated by a light-emitting source such as a lighting apparatus or a display, and which can transmit the visible light signal to another terminal and light-emitting source by an LED flash of the camera, thereby enabling transmission and reception of visible light communication by the camera, which is equipped as standard in the smart device, as well as enabling transmission and relay of data by connecting to RF communication such as WiFi, Bluetooth and UWB.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 3, 2018
    Assignee: SEOUL NATIONAL UNIVERSITY OF TECHNOLOGY CENTER FOR INDUSTRY COLLABORATION
    Inventor: Jae-Sang Cha
  • Publication number: 20160248505
    Abstract: The present invention provides a smart device which can receive, by an image sensor of a camera, a visible light signal generated by a light-emitting source such as a lighting apparatus or a display, and which can transmit the visible light signal to another terminal and light-emitting source by an LED flash of the camera, thereby enabling transmission and reception of visible light communication by the camera, which is equipped as standard in the smart device, as well as enabling transmission and relay of data by connecting to RF communication such as WiFi, Bluetooth and UWB.
    Type: Application
    Filed: October 28, 2014
    Publication date: August 25, 2016
    Applicant: SEOUL NATIONAL UNIVERSITY OF TECHNOLOGY CENTER FOR INDUSTRY COLLABORATION
    Inventor: Jae-Sang CHA
  • Publication number: 20160187056
    Abstract: A natural gas liquefaction process according to the present invention uses a single closed-loop refrigeration cycle employing a mixed refrigerant, thereby having a simple structure for the liquefaction process and allowing the liquefaction process to be easily operated. Furthermore, the present invention cools natural gas after one stream is separated into two streams, thereby having an excellent efficiency of the liquefaction process.
    Type: Application
    Filed: May 20, 2014
    Publication date: June 30, 2016
    Inventors: Sang Gyu Lee, Ihn Soo Yoon, Byoung Hak Cho, Young Soon Sohn, Kyu Sang Cha, Chang Won Park, Yong Soo Kwon
  • Publication number: 20150253073
    Abstract: Provided is a re-liquefying method for a stored liquid which has a simple structure or operation and excellent process efficiency. Since the method does not use separate refrigerant, the structure or operation in the re-liquefying method is significantly simplified. In addition, since a portion of a main stream is separated to form a cycle similar to a refrigerant cycle which cools the mainstream, the process efficiency of the re-liquefying method is significantly improved. The above Abstract is a more accurate literal translation of the abstract from the original priority application than the PCT abstract.
    Type: Application
    Filed: October 22, 2013
    Publication date: September 10, 2015
    Inventors: Sang Gyu Lee, Yeong Beom Lee, Kyu Sang Cha, Young Soon Sohn, Kun Hyung Choe, Dong-Hyuk Kim
  • Publication number: 20130263623
    Abstract: Disclosed herein is a natural gas liquefaction process of pre-cooling natural gas using a closed loop pre-cooling cycle and liquefying the pre-cooled natural gas using a closed loop liquefying cycle, wherein the closed loop pre-cooling cycle includes first and second pre-cooling cycles in parallel for pre-cooling supplied natural gases together in the same first heat exchange region through the respective pure refrigerants, and the closed loop liquefying cycle includes at least one liquefying cycle for liquefying the pre-cooled natural gas through a mixed refrigerant, the first and second pre-cooling cycles being a closed circuit cooling cycle.
    Type: Application
    Filed: October 25, 2011
    Publication date: October 10, 2013
    Applicant: KOREA GAS CORPORATION
    Inventors: Sang Gyu Lee, Kun Hyung Choe, Kyu Sang Cha, Chang Won Park, Yeong Beom Lee, Yong Bum Cho, Chul Gu Lee, Ho-Myung Chang
  • Publication number: 20130133362
    Abstract: Disclosed herein is a natural gas liquefaction process using a single refrigeration cycle adopting a mixed refrigerant, and therefore having a simple structure and thus a compact system which is easy to operate, and further, after the mixed refrigerant is separated into two refrigerant parts, the two refrigerant parts are not mixed with each other but go through condensing (cooling), expanding, heat-exchanging, and compressing stages individually, and thus, optimal temperature and pressure conditions are applied to each of the separated refrigerant parts to increase efficiency of the liquefaction process.
    Type: Application
    Filed: August 11, 2011
    Publication date: May 30, 2013
    Inventors: Sang Gyu Lee, Kun Hyung Choe, Young Myung Yang, Chul Gu Lee, Kyu Sang Cha, Chang Won Park, Sung Hee Choi, Yeong Beom Lee
  • Patent number: 7738510
    Abstract: This invention is concerned with a transmission control method and apparatus in a collision interval for a collision of multidimensional hopping patterns. In the present invention, each orthogonal wireless resource in the coordinate of the multidimensional orthogonal resource can hop according to the hopping pattern negotiated between a transmitter and a receiver, and each corresponding channel is distinguished by the hopping pattern. A specific multidimensional hopping pattern is allocated to each secondary station. The hopping pattern is either permanently allocated to the secondary stations or temporarily allocated from the primary station during a call set-up. The permanent allocation of the hopping pattern to the secondary stations is achieved when the hopping pattern is identified based on a unique identifier, such as ESN of the secondary station.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: June 15, 2010
    Assignees: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and Technology
    Inventors: Jae-Kyun Kwon, Kang-Soo Shin, Jae-Hoon Chung, Ji-Young Yun, Sung-Ho Moon, Soo-Mee Park, Dan-Keun Sung, Su-Won Park, Mun-Geon Kyeong, Jae-Sang Cha, Seo-Young Lee, Seog-Ill Song, In-Soo Sohn, Ju-Phil Cho, Jae-Joon Kim, Hee-Soo Lee
  • Publication number: 20100142595
    Abstract: A communication system generates a continuously orthogonal spreading code for a user, a user signal is spreading-modulated by using the continuously orthogonal spreading codes, and then the spread signal is pre-rake combined and transmitted. A receiver processes the received signal by using a matched filter for one path.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 10, 2010
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Mun-Geon Kyeong, Woo-Goo Park, In-Cheol Jeong, Jae-Sang Cha
  • Publication number: 20100055848
    Abstract: In inspecting for quality of underfill material dispensed in an IC package, a camera image is captured for the IC package having the underfill material dispensed between an IC die and a package substrate. A data processor analyzes the camera image to determine an occurrence of an unacceptable condition of the underfill material. Pre-heating and/or post-heating of the package substrate before and/or after dispensing the underfill material by a contact-less heater ensures uniform spreading of the underfill material.
    Type: Application
    Filed: October 9, 2009
    Publication date: March 4, 2010
    Inventors: Keng Sang Cha, Tek Seng Tan, Haris Fazelah, Ahmad Zahrain B. Mohamad Shakir
  • Patent number: 7622311
    Abstract: In inspecting for quality of underfill material dispensed in an IC package, a camera image is captured for the IC package having the underfill material dispensed between an IC die and a package substrate. A data processor analyzes the camera image to determine an occurrence of an unacceptable condition of the underfill material. Pre-heating and/or post-heating of the package substrate before and/or after dispensing the underfill material by a contact-less heater ensures uniform spreading of the underfill material.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 24, 2009
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Keng Sang Cha, Tek Seng Tan, Haris Fazelah, Ahmad Zahrain B. Mohamad Shakir
  • Patent number: 7558309
    Abstract: The proposed invention relates to the interference-free Ultra-Wide Band (UWB) wireless communication system using spreading codes with low correlation duration or Zero Correlation Duration (ZCD) property, the communication processing technique of the system and the record media of the program through the computer.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: July 7, 2009
    Assignee: INHA Industry Partnership Institute
    Inventors: Jae-Sang Cha, Chong-Hyun Lee, Kyung-Sup Kwak