Abstract: Disclosed is a dissimilar metal-supported catalyst for the production of aromatics by methane dehydroaromatization. In the dissimilar metal-supported catalyst, a noble metal such as gold (Au), silver (Ag), platinum (Pt), and/or rhodium (Rh) is introduced into a catalyst supported with iron (Fe) on a zeolite support to promote the dehydrogenation of methane and the formation of iron carbide (Fe3C) as an active species for dehydroaromatization, achieving a greatly improved yield of aromatics. Also disclosed is a method for producing aromatics using the dissimilar metal-supported catalyst.
Type:
Grant
Filed:
March 8, 2021
Date of Patent:
March 5, 2024
Assignees:
Korea University Research and Business Foundation, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Inventors:
Kwan-Young Lee, Do Heui Kim, Jae Ik Sim, Byung Jin Lee
Abstract: The present invention provides a composition for antifreezing including a gold (Au) nanostructure in which at least a portion thereof is concave, thereby it is possible to increase a survival rate of cells due to having excellent effect of inhibiting ice recrystallization when cryopreservation of the cells, and maintain a texture of food even when using in the freezing of food.
Type:
Grant
Filed:
December 3, 2019
Date of Patent:
February 27, 2024
Assignee:
Korea University Research and Business Foundation
Inventors:
Dong June Ahn, Sang Yup Lee, Yong Ho Cho
Abstract: Provided is a brain-machine interface based intention determination device using a virtual environment, including: an input unit that receives a control mode; a training output unit that outputs training information; a collection unit that collects a brain signal; a first preprocessing unit that extracts time-frequency information; a second preprocessing unit that generates physical information; a learning unit that learns control information according to a pattern of physical information; a determination unit that determines control information; and a command output unit that outputs a control command matching the control information.
Type:
Grant
Filed:
January 20, 2021
Date of Patent:
February 27, 2024
Assignee:
Korea University Research and Business Foundation
Abstract: Disclosed is a video processing system including multiple unmanned aerial vehicles (UAVs) configured to capture a video of a fire site, wherein each UAV has a control unit including an input layer and a first hidden layer (hidden layer 1) and a central server connected to the multiple UAVs by wireless communication, wherein the central server includes multiple hidden layers and an output layer. The video processing system performs a learning process to determine whether a fire has occurred using a feature map in which an original video is difficult to recognize and personal information is protected. Thus, it is possible to fundamentally prevent the exposure and infringement of personal information.
Type:
Grant
Filed:
April 14, 2022
Date of Patent:
February 27, 2024
Assignee:
Korea University Research and Business Foundation
Inventors:
Joongheon Kim, Yoo Jeong Ha, Minjae Yoo, SooHyun Park
Abstract: The present invention relates to a method and an apparatus for estimating a user pose using a three-dimensional virtual space model. The method of estimating a user pose including the position and orientation information of a user for a three-dimensional space includes a step of receiving user information including an image acquired in a three-dimensional space, a step of confirming a three-dimensional virtual space model constructed based on spatial information including depth information and image information for the three-dimensional space, a step of generating corresponding information corresponding to the user information in the three-dimensional virtual space model, a step of calculating similarity between the corresponding information and the user information, and a step of estimating a user pose based on the similarity.
Type:
Grant
Filed:
April 7, 2020
Date of Patent:
February 27, 2024
Assignee:
Korea University Research and Business Foundation
Inventors:
Nak Ju Doh, Ga Hyeon Lim, Jang Hun Hyeon, Dong Woo Kim, Bum Chul Jang, Hyung A Choi
Abstract: An apparatus for measuring blood components, includes: an impedance sensor configured to measure a bio-impedance of a user; and a processor configured to measure, by using a multiple-output artificial neural network (ANN) learning model, a concentration of a basic blood component and a concentration of at least one auxiliary blood component associated with the basic blood component, based on user metadata and the measured bio-impedance.
Type:
Application
Filed:
February 7, 2023
Publication date:
February 22, 2024
Applicants:
SAMSUNG ELECTRONICS CO., LTD., Korea University Research and Business Foundation
Inventors:
Yun S PARK, Seoung Bum KIM, Chunghyup MOK, Jinsoo BAE, Leekyung YOO, Yeol Ho LEE, Joon Hyung LEE, Keewon JEONG, Yoon Sang CHO
Abstract: Disclosed are a video conference image-based social anxiety treatment system using biofeedback and exposure therapy, and a recording medium having, recorded thereon, a program for executing a method for same. According to an embodiment of the inventive concept, a social anxiety treatment system includes an anxiety level measurement unit that measures an anxiety level of a subject, which is a target of social anxiety treatment, while the subject performs a speech task through a video conference, a video conference image provision unit that provides the subject with video conference images including a participant connected to and participating in the video conference and a virtual participant prepared in advance, and an exposure therapy level adjustment unit that adjusts an exposure therapy level according to the anxiety level of the subject, which changes according to the video conference images.
Type:
Application
Filed:
December 14, 2021
Publication date:
February 22, 2024
Applicant:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Abstract: A cell image segmentation method using scribble labels includes iteratively pre-training via an image segmentation network (U-Net) using a cell image and scribble labels indicating a cell region and a background region as training data, calculating an exponential moving average (EMA) of image segmentation prediction probabilities at a predetermined interval during the pre-training, self-training by assigning the cell region and the background region for which the EMA of image segmentation prediction probabilities is over a preset threshold to be a pseudo-label, and iteratively refining the image segmentation prediction probability based on a scribbled loss (Lsp) obtained through a result of the training and an unscribbled loss (Lup). Accordingly, it is possible to achieve cell image segmentation with high reliability using only scribble labels.
Type:
Grant
Filed:
September 17, 2021
Date of Patent:
February 20, 2024
Assignee:
Korea University Research and Business Foundation
Abstract: According to an embodiment of the present disclosure, a ring-learning with rounding (LWR)-based quantum-resistant signature method includes: a key generation step of receiving a security parameter, and outputting a signature key and a verification key, via an operation on a ring defined by a cyclotomic equation including three terms; a signature value output step of outputting a signature value based on the output signature key; and a signature verification step of calculating an operation value based on the output verification key and signature value, and verifying a signature based on a result of comparing the output signature value with the calculated operation value.
Type:
Grant
Filed:
September 30, 2022
Date of Patent:
February 20, 2024
Assignees:
AGENCY FOR DEFENSE DEVELOPMENT, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventors:
Jong Hwan Park, Kwang Su Lee, So Hyun Park, Joo Woo, Donghwan Lee, Myung Kil Ahn
Abstract: The present invention relates to a method of controlling a defect structure in a chabazite (CHA) zeolite membrane, the CHA zeolite membrane having a controlled defect structure by the method and a method of separating CO2, H2, or He and water from a mixture of water and an organic solvent using the CHA zeolite membrane, and more particularly, to a method of controlling a defect structure in a CHA zeolite membrane that improves the separation performance by reducing the amount and size of defects formed in the CHA membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.
Type:
Grant
Filed:
January 15, 2021
Date of Patent:
February 20, 2024
Assignee:
Korea University Research and Business Foundation
Inventors:
Jungkyu Choi, Kwan Young Lee, Minseong Lee
Abstract: A low dropout (LDO) regulator includes: one or more power transistors configured to dispose between an input node and an output node, wherein the input node is a node to which an input voltage is applied and the output node is a node from which an output voltage is output; a voltage comparing unit configured to generate a comparative signal based on a difference between the output voltage and a first reference voltage; a digital control unit configured to generate a control signal for gating of the one or more power transistors in response to the comparative signal; and a gate driving unit configured to output a gating signal for the one or more power transistors in response to the control signal, wherein the gating signal is corresponding to one of the input voltage and a negative of the input voltage.
Type:
Application
Filed:
June 27, 2023
Publication date:
February 15, 2024
Applicant:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventors:
Hyung-Min Lee, Hyunjun Park, Woojoong Jung
Abstract: In a non-contact pressure measurement system of a balloon catheter and a non-contact pressure measurement method of the balloon catheter using the same, the system includes a chamber part, a balloon, a tube part, a pump part and a displacement sensor. The chamber part stores a saline solution. The balloon is disposed inside of a body and is configured to be expanded with supply of the saline solution. The tube part is configured to connect the chamber part with the balloon. The pump part is configured to control the supply of the saline solution via the tube part. The displacement sensor is configured to measure an amount of the expansion of the tube part expanded with the supply of the saline solution, in a predetermined section of the tube part.
Type:
Application
Filed:
November 1, 2021
Publication date:
February 15, 2024
Applicants:
OSONG MEDICAL INNOVATION FOUNDATION, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventors:
Kang Moo LEE, Eun Ju YOO, Min Chul SONG, Chang Jun CHOI, Jin Woo AHN, Geum Joon CHO
Abstract: Provided is an inductively coupled plasma etching apparatus comprising: a reaction chamber having an inner space to which a gas source is provided; an upper coil part for inducing an electric field into the inner space of the reaction chamber and configured to form an inductively coupled plasma from the gas source by the electric field; a mounting part which faces the upper coil part and on which an object to be etched by the inductively coupled plasma is disposed; and a lower electrode part provided on the lower side of the mounting part to induce at least any one of ions and neutral active species constituting the inductively coupled plasma and involved in etching toward the object to be etched disposed on the mounting part, wherein the frequency of the lower electrode part is lower than the frequency of the upper coil part.
Type:
Application
Filed:
October 16, 2023
Publication date:
February 15, 2024
Applicant:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS
Inventors:
Kwang Ho KWON, No Min LIM, Byung Jun LEE
Abstract: The present invention relates to an optimum method for mass-producing colanic acid by changes in the genetic factors of the strain and the environmental factors of the strain culture. The biological production amount of colanic acid can be significantly increased using the recombinant strain and culture conditions of the present invention.
Type:
Application
Filed:
August 15, 2022
Publication date:
February 15, 2024
Applicant:
Korea University Research and Business Foundation
Inventors:
Kyoung Heon KIM, Eun Ju YUN, Yoon Ho CHO, So Ra YU
Abstract: The present invention relates to an in-vivo bulking agent which can be used as a medicinal agent for prevention or treatment of at least one disease selected from the group consisting of urinary incontinence, fecal incontinence, and gastroesophageal reflux or as a filler for use in a plastic surgery procedure, and to a preparation method therefor. The in-vivo bulking agent can exhibit a bulking effect when injected into the body and particularly, is highly biocompatible because a first composition in which silicone particles are coated with a zwitterionic polymer having a surfactant property is introduced into a second composition, whereby the bulking agent can inhibit inflammatory reactions in vivo.
Type:
Grant
Filed:
June 11, 2020
Date of Patent:
February 13, 2024
Assignee:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventors:
Kwang Dae Hong, Jihun Seo, Joon Bum Lee
Abstract: A method for discarding personal information comprises at least one among partial overwriting, SLC programming, and applying an erase pulse. The method for discarding personal information comprises a step for acquiring the program status of personal information-containing data of a memory block to be erased, generating data having a status that is equal to or higher than the program status corresponding to the personal information, and carrying out a partial overwriting operation on the personal information by using the generated data.
Type:
Grant
Filed:
December 9, 2020
Date of Patent:
February 13, 2024
Assignee:
Korea University Research and Business Foundation
Abstract: Disclosed is an apparatus for classifying immoral images according to one embodiment of the present invention, comprising: a text encoder unit that receives a learning text as an input to create a textual embedding vector; an image encoder unit that receives an image as an input to create a visual embedding vector; and a morality classification unit that receives either the textual embedding vector or the visual embedding vector as an input to create and output a classification result indicating whether the input text or image is moral or immoral, wherein the morality classification unit learns the classification results of the input learning texts only from a learning dataset containing a plurality of learning texts in which whether each learning text is moral or immoral is mapped to a binary class.
Type:
Application
Filed:
October 19, 2023
Publication date:
February 8, 2024
Applicant:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventors:
Jin Kyu KIM, Yu Jin JEONG, Seong Beom PARK
Abstract: The present invention relates to an antigen composition for preventing or treating viral infectious diseases, comprising, as an active ingredient, a multiple variant protein of a recombinant hemagglutinin monomeric protein in an influenza virus. In addition, the present invention relates to an antigen composition for preventing or treating viral infectious diseases, comprising a scaffold-based fusion protein. The antigen composition for preventing or treating viral infectious diseases, according to the present invention, has an outstanding preventive effect of inhibiting the proliferation and replication of viruses having various mutations, and is recyclable and safe by means of using a recombinant protein, and thus can be widely used in various industrial fields, such as the medicine and life science fields.
Type:
Application
Filed:
January 15, 2021
Publication date:
February 8, 2024
Applicant:
Korea University Research and Business Foundation, Sejong Campus
Abstract: Disclosed is a method of reducing smart contract fees for a decentralized application (DApp). A parameter of a request reception event and a public key of a user are stored in a task queue of a computation server. The computation server performs a task requested by the user, calls a state change function for the performed task from a smart contract, and transmits a transaction result to the user when the transaction result is returned. The user pays, to the smart contract, a fee corresponding to the generation of the request reception event, and the computation server pays, to the smart contract, a fee corresponding to a state change of the smart contract. Thus, by minimizing and uniformizing a fee to be paid by a user of a DApp system, it is possible to increase accessibility to a corresponding DApp.
Type:
Grant
Filed:
February 10, 2022
Date of Patent:
February 6, 2024
Assignee:
Korea University Research and Business Foundation
Inventors:
Hwangnam Kim, Seong-Joon Park, Jaeseung Lee, Nam-Kyung Yoon
Abstract: Provided is a carbon dioxide reduction composite catalyst, comprising an organic-inorganic porous body, and a molecular reduction catalyst combined with the organic-inorganic porous body, wherein the organic-inorganic porous body includes metal oxide clusters, and a light-condensing organic material as linkers between the metal oxide clusters, and the linkers absorb visible light to form excitons, and move the excitons through energy transfer between the linkers to transfer the electrons of the excitons to the molecular reduction catalyst.
Type:
Grant
Filed:
February 25, 2021
Date of Patent:
February 6, 2024
Assignee:
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS
Inventors:
Ho Jin Son, Sang Ook Kang, Sung Han Choi, Chul Hoon Kim