Patents by Inventor Jungkyu Choi

Jungkyu Choi 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: 20190321785
    Abstract: The present invention relates to a method of post-treating a zeolite membrane, comprising treating a defective zeolite membrane with a chemical material such as a dye molecule, which has a size larger than that of the pores of the zeolite membranes and smaller than defects in the membrane, thereby healing the defects in the membrane. The post-treatment method performs post-treatment of the zeolite membrane under mild conditions (room temperature and normal pressure), thereby selectively healing the defects in the zeolite membrane and improving the performance of the zeolite membrane. In addition, the method may provide a high-performance membrane having a high separation factor, particularly under dry conditions.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 24, 2019
    Applicant: Korea University Research and Business Foundation
    Inventors: Jungkyu CHOI, Kwan Young LEE, Sung-Won HONG
  • Publication number: 20190143296
    Abstract: The present invention relates to a method of fabricating an organic structure directing agent-free CHA type zeolite membrane and a membrane fabricated thereby, and more particularly to a method of fabricating a continuous CHA type zeolite membrane, which exhibits CO2/N2 and CO2/CH4 separation performances comparable with those of conventional membranes, in a cost-effective manner without a calcination process by hydrothermal synthesis using an alkali metal hydroxide without using an organic structure directing agent, and to a membrane fabricated thereby.
    Type: Application
    Filed: July 31, 2018
    Publication date: May 16, 2019
    Applicant: Korea University Research and Business Foundation
    Inventors: Jungkyu CHOI, Kwan-Young LEE, Eunhee JANG
  • Publication number: 20180326365
    Abstract: The present invention relates to a chabazite zeolite membrane with a controlled pore size and a production method thereof, wherein the sizes of pore space and pore mouth of the chabazite zeolite membrane are finely controlled through chemical vapor deposition. Through the chemical vapor deposition, defects present in the chabazite zeolite membrane are eliminated, and the pore size is effectively controlled. Thus, unlike hydrophilic membranes showing excellent CO2/N2 separation performance under a dry condition, the chabazite zeolite membrane with a controlled pore size according to the present invention has a hydrophobic surface, and thus can maintain excellent CO2/N2 separation performance even under a wet condition. Accordingly, the chabazite zeolite membrane of the present invention can effectively capture carbon dioxide from nitrogen under various environmental conditions.
    Type: Application
    Filed: November 16, 2015
    Publication date: November 15, 2018
    Inventors: Jungkyu CHOI, Eun-Joo KIM
  • Publication number: 20180272288
    Abstract: The present invention relates to a method of preparing a perm-selective porous membrane and a method of separating gases using the prepared porous membrane. According to the present invention, a membrane is synthesized using a hierarchically structured alumina porous support by a counter diffusion method. During this synthesis, the diffusion rate of metal ions loaded on the porous support is controlled by controlling the pore size of the porous support, and the position at which the membrane is synthesized is controlled by synthesizing the membrane inside the support. This can increase the physical stability of the membrane and make the membrane thicker so as to ensure higher H2/CO2 separation factors.
    Type: Application
    Filed: March 26, 2018
    Publication date: September 27, 2018
    Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Jungkyu CHOI, Kwan Young LEE, Eunhee JANG
  • Publication number: 20180185792
    Abstract: The present invention relates to a method of preparing a decadodecasil 3R (DDR) type zeolite membrane and a membrane prepared thereby, and more particularly, to a method of preparing a hydrophobic decadodecasil 3R (DDR) type zeolite membrane having a continuous out-of-plane orientation by adding a substrate on which a seed layer is formed to a silica source synthetic precursor containing a methyltropinium salt and performing a hydrothermal synthesis, and a method of capturing and removing carbon dioxide using a membrane prepared thereby.
    Type: Application
    Filed: January 2, 2018
    Publication date: July 5, 2018
    Inventors: Jungkyu Choi, Kwan Young Lee, Eun-Joo Kim
  • Patent number: 10009645
    Abstract: A digital television including a display, an interface, a communication unit, a broadcast receiver, and a controller to: display broadcast content, display a screen corresponding to a voice recognition mode, receive a first voice command signal corresponding to a first voice command, which is a single voice command including a first part defining a search source of an Internet based search engine and a second part defining a first search keyword, display a web page corresponding to the search source, which includes a first search result corresponding to first information stored on a remote server, receive a second voice command signal corresponding to a second voice command, in which the second voice command is a single voice command including the first search keyword, and display a second search result corresponding to the first search keyword from the second voice command, which corresponds to second information stored in the digital television.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: June 26, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Seokbok Jang, Jongse Park, Joonyup Lee, Jungkyu Choi
  • Patent number: 9981852
    Abstract: Provided is a selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded uniform layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same, in which thin inorganic particles may be selectively deposited on a substrate or on a support, and even a physical interaction between the deposited particles and supports (or substrates) alone allows for obtaining high surface coverage to form a uniform layer, which is critical in reproducible production of membranes of inorganic materials, such as zeolite, by secondary growth.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 29, 2018
    Assignee: Korea University Research and Business Foundation
    Inventors: Jungkyu Choi, Eunjoo Kim, Wanxi Cai
  • Publication number: 20180131802
    Abstract: Provided are a mobile terminal and a control method therefor. The mobile terminal includes: a touchscreen disposed on one side of a main body of the terminal; a push key mounted on the main body to receive a push input; and a controller that displays virtual keys associated with the settings or control of the terminal on the touchscreen when the push key is pushed, and executes functions associated with a speech recognition mode when a set period of time elapses without at least one touch input on the virtual keys being sensed.
    Type: Application
    Filed: September 8, 2015
    Publication date: May 10, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Junho CHO, Jungkyu CHOI, Youngwoo KIM, Huran CHOI, Daeyeon YI
  • Patent number: 9866891
    Abstract: A digital television can include a display; an interface to receive a control signal from a remote controller; a communication unit for internet access; a broadcast receiver; and a controller to display broadcast content received through the broadcast receiver, display a screen corresponding to a voice recognition mode in response to entering the voice recognition mode, the screen includes a symbol and text indicating the voice recognition mode, receive a voice command signal corresponding to a voice command through the remote controller in the voice recognition mode while the broadcast content is displayed, in which the voice command is input via a microphone provided in the remote controller, and the input voice command includes a search source and a search keyword, and display a web page corresponding to the search source included in the voice command, which includes a search window including the search keyword and a search result.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: January 9, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Seokbok Jang, Jongse Park, Joonyup Lee, Jungkyu Choi
  • Patent number: 9794613
    Abstract: An electronic device and a method for controlling an electronic device are disclosed. The electronic device includes: a display unit; a voice input unit; and a controller displaying a plurality of contents on the display unit, receiving a voice command for controlling any one of the plurality of contents through the voice input unit, and controlling content corresponding to the received voice command. Multitasking performed by the electronic device can be effectively controlled through a voice command.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: October 17, 2017
    Assignee: LG Electronics Inc.
    Inventors: Seokbok Jang, Jongse Park, Joonyup Lee, Jungkyu Choi
  • Publication number: 20170264939
    Abstract: A digital television including a display, an interface, a communication unit, a broadcast receiver, and a controller to: display broadcast content, display a screen corresponding to a voice recognition mode, receive a first voice command signal corresponding to a first voice command, which is a single voice command including a first part defining a search source of an Internet based search engine and a second part defining a first search keyword, display a web page corresponding to the search source, which includes a first search result corresponding to first information stored on a remote server, receive a second voice command signal corresponding to a second voice command, in which the second voice command is a single voice command including the first search keyword, and display a second search result corresponding to the first search keyword from the second voice command, which corresponds to second information stored in the digital television.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 14, 2017
    Applicant: LG Electronics Inc.
    Inventors: Seokbok JANG, Jongse PARK, Joonyup LEE, Jungkyu CHOI
  • Publication number: 20170006329
    Abstract: A digital television can include a display; an interface to receive a control signal from a remote controller; a communication unit for internet access; a broadcast receiver; and a controller to display broadcast content received through the broadcast receiver, display a screen corresponding to a voice recognition mode in response to entering the voice recognition mode, the screen includes a symbol and text indicating the voice recognition mode, receive a voice command signal corresponding to a voice command through the remote controller in the voice recognition mode while the broadcast content is displayed, in which the voice command is input via a microphone provided in the remote controller, and the input voice command includes a search source and a search keyword, and display a web page corresponding to the search source included in the voice command, which includes a search window including the search keyword and a search result.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Applicant: LG Electronics Inc.
    Inventors: Seokbok JANG, Jongse PARK, Joonyup Lee, Jungkyu CHOI
  • Patent number: 9224397
    Abstract: A method of writing a specific time point through a familiar pattern input that can be instantaneously applied to a portion desired to be memorize or highlighted by the user during audio recording. An electronic device according to an embodiment disclosed in the present disclosure may include a storage unit configured to store audio data and the recording information of the audio data; a controller configured to convert an input audio signal into audio data to store the audio data; a display unit configured to display one or more texts based on the execution of a speech-to-text (STT) for the input audio signal; and an input unit configured to receive a specific pattern input or a selection input for part of the texts from the user while receiving the audio signal.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: December 29, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyehwan Lee, Younghan Lee, Jaebok Kim, Jungkyu Choi
  • Publication number: 20150340031
    Abstract: A method for controlling the operation of a terminal according to an embodiment of the present invention includes the steps of: operating the terminal in a voice-recognition mode by receiving a voice-recognition command from the user; analyzing a voice received from the user so as to determine the user's intention; outputting the primary response in a voice according to the user's intention; analyzing the user's reaction to the primary response; and controlling the operation of the terminal according to the result of analyzing the user's reaction.
    Type: Application
    Filed: January 9, 2013
    Publication date: November 26, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Juhee KIM, Jungkyu CHOI, Jonghwan KIM, ChoongNyoung SEON, Joonyup LEE
  • Patent number: 9171105
    Abstract: An electronic device and a method of operating the same are provided. More particularly, in an electronic device and a method of operating the same, by recognizing a keyword of contents, reflecting the contents, and executing an application corresponding to the recognized keyword, an application execution environment corresponding to a user intention is provided.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: October 27, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Juhee Kim, Jungkyu Choi, Jongse Park, Joonyup Lee, Seokbok Jang
  • Patent number: 9147395
    Abstract: The present disclosure relates to a mobile terminal and a voice recognition method thereof. The voice recognition method may include receiving a user's voice; providing the received voice to a first voice recognition engine provided in the server and a second voice recognition engine provided in the mobile terminal; acquiring first voice recognition data as a result of recognizing the received voice by the first voice recognition engine; acquiring second voice recognition data as a result of recognizing the received voice by the second voice recognition engine; estimating a function corresponding to the user's intention based on at least one of the first and the second voice recognition data; calculating a similarity between the first and the second voice recognition data when personal information is required for the estimated function; and selecting either one of the first and the second voice recognition data based on the calculated similarity.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: September 29, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Juhee Kim, Hyunseob Lee, Joonyup Lee, Jungkyu Choi
  • Patent number: 9120680
    Abstract: A thermal processing method for polycrystalline porous films is disclosed. The method and the resulting firms including zeolite films are claimed.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: September 1, 2015
    Inventors: Michael Tsapatsis, Hae-Kwon Jeong, Jungkyu Choi
  • Publication number: 20140315709
    Abstract: Provided is a selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded uniform layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same, in which thin inorganic particles may be selectively deposited on a substrate or on a support, and even a physical interaction between the deposited particles and supports (or substrates) alone allows for obtaining high surface coverage to form a uniform layer, which is critical in reproducible production of membranes of inorganic materials, such as zeolite, by secondary growth.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 23, 2014
    Applicant: Korea University Research and Business Foundation
    Inventors: Jungkyu CHOI, Eunjoo KIM, Wanxi CAI
  • Patent number: D752489
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: March 29, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Yamamoto, Jungkyu Choi, Kazuki Watanabe
  • Patent number: D760127
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 28, 2016
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Yamamoto, Jaesang Lee, Jungkyu Choi