公开(公告)号：US11517745B2

公开(公告)日：2022-12-06

申请号：US16490846

申请日：2018-03-08

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION ,  GACHON UNIVERSITY OF INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Seong-woo Kim ,  Jungsuk Kim

IPC: A61N1/05 ,  A61F2/14 ,  A61N1/36

Abstract: Provided is an artificial retina system for improving contrast sensitivity. The artificial retina system includes an artificial retina which is installed under the retina and includes a plurality of photodiode cells and a microcomputer. The microcomputer compares, with at least one reference value, the magnitude of an electric signal outputted from a photodiode in each of the photodiode cells. The microcomputer controls to amplify or reduce the electric signal outputted by each of the photodiode cells according to the result of comparison. Visual cells corresponding to each of the photodiode cells can be stimulated with an electric signal controlled by the microcomputer.

公开(公告)号：US11505557B2

公开(公告)日：2022-11-22

申请号：US16712291

申请日：2019-12-12

Applicant: LG Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： Dae-Wi Yoon ,  Bo-Min Seo ,  Chun-Ki Kim ,  Dong-Hoon Choi ,  Min-Ju Cho ,  Su-Na Choi ,  Mallesham Godumala

IPC: C07D491/052 ,  C07D519/00 ,  H01L51/00 ,  H01L51/50

Abstract: Discussed is an organic compound of Formula 1 and an organic light emitting diode and an OLED device including the organic compound. In the organic compound, Ar1 is a heteroaryl group comprising a nitrogen atom, and Ar2 is a C6 to C30 aryl group, and R is a C1 to C10 alkyl group. The organic compound may be included in an emitting material layer of the organic light emitting diode as a host such that an emitting efficiency and a lifespan of the organic light emitting diode and the OLED device are improved.

公开(公告)号：US20220354413A1

公开(公告)日：2022-11-10

申请号：US17622713

申请日：2020-06-25

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Yoon Chan RAH

IPC: A61B5/00 ,  A61B3/113 ,  A61B5/11 ,  A61B3/00 ,  A63F13/65 ,  A63F13/212

Abstract: A virtual reality game- and biosignal sensor-based VOR assessment and rehabilitation apparatus includes: a biosignal sensing unit which senses and notifies of head movement and eye movement of a patient using an eye tracker and an inertial measurement unit (IMU) sensor attached or installed to a head-mounted display device; a VOR function assessment unit which configures and provides a game for VOR function assessment; a patient-personalization control unit which determines, on the basis of the VOR gain of the patient, the types and order of rehabilitation games, and a rehabilitation level; and a rehabilitation game providing unit which configures and provides games for at least one among smooth pursuit, saccades, VOR rehabilitation exercise, amplified VOR rehabilitation exercise, and suppressive VOR rehabilitation exercise, and determines the difficulty levels of the games on the basis of the rehabilitation level.

公开(公告)号：US20220323930A1

公开(公告)日：2022-10-13

申请号：US17615652

申请日：2020-05-28

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Chang Seop HONG ,  Jong Hyeak CHOE

IPC: B01J20/22 ,  B01J20/08 ,  B01J20/28 ,  B01J20/30 ,  B01J20/32

Abstract: The present invention relates to a carbon dioxide adsorbent based on a hydrophobic silane-coated amine-functionalized MOF/alumina composite and, more specifically, to a carbon dioxide adsorbent based on a hydrophobic silane-coated amine-functionalized MOF/alumina composite, capable of maintaining structural stability by means of the moisture present in exhaust gas, and thus can effectively capture carbon dioxide in a real fluidized bed. According to the present invention, provided are a carbon dioxide adsorbent and a preparation method therefor, the carbon dioxide adsorbent being capable of maintaining structural stability by means of the moisture present in exhaust gas since the surface of a porous metal-organic framework/alumina oxide composite is coated with hydrophobic silane.

公开(公告)号：US11465959B2

公开(公告)日：2022-10-11

申请号：US17050925

申请日：2019-04-30

Applicant: Korea University Research and Business Foundation

Inventor： Chang Seop Hong ,  Jong Hyeak Choe ,  Jeong Eun Kim

IPC: C07C51/15 ,  C07C51/50 ,  C07C65/105

Abstract: The present invention relates to a method for preparing 4,4′-dihydroxy-[1,1′-biphenyl-3,3′-dicarboxylic acid], the method comprising a step for preparing a compound represented by chemical formula 1 by reacting a compound represented by chemical formula 2 with a base according to reaction formula 1. [reaction formula 1] [chemical formula 1] [chemical formula 2] According to the present invention, because use of additional carbon dioxide is unnecessary during the reaction, internal pressure is lowered during same, the reaction can be carried out at a lower temperature, the yield from the synthesis is notably improved as hardening of the resulting substance is absent, and H4dobpdc can be synthesized in large amounts as an additional process for obtaining pure ligands is unnecessary.

公开(公告)号：US20220314219A1

公开(公告)日：2022-10-06

申请号：US17698055

申请日：2022-03-18

Applicant: Korea University Research and Business Foundation

Inventor： Chang Soo HAN

IPC: B01L3/00

Abstract: Disclosed is a device for analyzing a single cell using a micropore including an inlet chamber; an outlet chamber provided on an opposite side of the inlet chamber; a pore membrane disposed between the inlet chamber and the outlet chamber; a pressure generating means provided in the inlet chamber or the outlet chamber; and a pair of electrodes respectively disposed in front and rear of the pore membrane, wherein a diameter D of the micropore is larger than a diameter of the target cell, a thickness t of the pore membrane is 0.5 μm to 1 mm, and a slenderness ratio (t/D) is 0.001 to 5.

公开(公告)号：US11462675B2

公开(公告)日：2022-10-04

申请号：US16886150

申请日：2020-05-28

Applicant: LG Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： Taeheon Kim ,  Sahn Nahm ,  YongGyoon Jang ,  Jonghyun Kim ,  Ku-Tak Lee ,  Chiwan Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Seok-June Chae

IPC: H01L41/187 ,  G06F3/041 ,  G10K9/122 ,  G06F1/16 ,  G06F3/01

Abstract: A piezoelectric element comprising a compound represented by Formula 1, a piezoelectric device including the piezoelectric element, a vibration module including the piezoelectric device, and a display apparatus including the piezoelectric device are provided, where (1-x)(LizNa0.5-zK0.5)(Nb1-ySby)O3.xCaZrO3  [Formula 1] where x, y, and z have a range of 0.001≤x≤0.2, a range of 0≤y≤0.5, and a range of 0≤z≤0.2, respectively.

公开(公告)号：US11458441B2

公开(公告)日：2022-10-04

申请号：US16729587

申请日：2019-12-30

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Jungkyu Choi ,  Kwan Young Lee ,  Sung-Won Hong

IPC: B01D53/22 ,  B01D71/02 ,  B01D69/10

Abstract: Disclosed are a CHA zeolite membrane and a method of preparing the same, and more particularly, a CHA zeolite membrane having high capacity to separate CO2/N2 and CO2/CH4 even under wet conditions using a membrane produced using a synthetic precursor having a controlled ratio of Si and Al, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.

公开(公告)号：US20220308568A1

公开(公告)日：2022-09-29

申请号：US17294028

申请日：2019-10-17

Applicant: Korea University Research and Business Foundation

Inventor： Yun Yeong OH ,  Seong Taek YUN

IPC: G05B23/02

Abstract: The present invention relates to an universal integrated environmental monitoring and management technique for operating underground storage sites of gaseous substances including CO2 capture and storage (CCS) site. According to the present invention, Firstly, a base dataset for observed soil gases and related surrounding environmental variables by a step of configuring/refining procedures. Next, extracting the time varying characteristics of the base dataset using wavelet-based multiresolution state-space modeling, and identifying the driving forces that governing the soil gases dynamics and evaluating their contributions through multiscale time-frequency domain correlation analysis. And finally, predicting and forecasting future scenarios with deep leaning models which intensively trained by the key driving forces. Furthermore, the present invention can provide quantitative based for analyzing the causation between driving forces and observed soil gases. In addition, the present invention can effectively be used to detect early leakage signs and to assess environmental impacts of leakage based on the identification, evaluation, and prediction results.

公开(公告)号：US11444606B2

公开(公告)日：2022-09-13

申请号：US17168395

申请日：2021-02-05

Applicant: Korea University Research and Business Foundation

Inventor： Sang Sig Kim ,  Kyoung Ah Cho ,  Doo Hyeok Lim

IPC: H03K3/03 ,  H01L23/00

Abstract: Provided is a spike pulse generation circuit comprising a single silicon device configured to non-periodically or periodically generate a spike pulse. More particularly, the spike pulse generation circuit comprising the single silicon device can utilize a positive feedback loop and a negative feedback loop to be mutually connected so as to selectively output a spike pulse related to a neural oscillation function similar to biological oscillation, thereby being capable of serving as a ring oscillator and performing a neuron function operation.