Patents by Inventor Hoon Choi

Hoon 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).

  • Patent number: 12030082
    Abstract: Provided is a bilayer composition for surface treatment of a steel plate and a surface-treated steel plate using same. The bilayer composition for surface treatment of a steel plate, comprising an undercoat coating composition including 1 to 12 wt % of a phenoxy resin, 0.001 to 1.0 wt % of colloidal silica, 0.001 to 1.0 wt % of a silane coupling agent, 0.1 to 1.0 wt % of a corrosion inhibitor, 0.001 to 1.0 wt % of a phosphoric acid compound as a long-term corrosion resistance improving agent, and a balance of water; and a topcoat coating composition including 0.1 to 5.0 wt % of an acrylic acid resin, 30 to 50 wt % of colloidal silica, 40 to 60 wt % of alkoxy silane, 5 to 15 wt % of an acrylate-based monomer, 0.01 to 1.00 wt % of an acidity control agent, and a balance of an organic solvent.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: July 9, 2024
    Assignee: POSCO CO., LTD
    Inventors: Chang-Hoon Choi, Won-Ho Son, Hee-Jea Eun
  • Publication number: 20240220833
    Abstract: Provided are a method for predicting usage for cloud storage service and system therefor. The method according to some embodiments may include obtaining a time series dataset through monitoring usage of storage resource, extracting a plurality of candidate training sets from the time series dataset, evaluating suitability of the plurality of candidate training sets to a linear regression model, wherein an independent variable of the linear regression model comprises a time variable and a dependent variable represents usage of the storage resource; selecting a training set from the plurality of candidate training sets based on the evaluation result, and predicting future usage of the storage resource through the linear regression model trained with the training set.
    Type: Application
    Filed: October 23, 2023
    Publication date: July 4, 2024
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: Hyo Jung LEE, Jeong Hyun LEE, Seung Wan HAN, Sung Hoon CHOI
  • Patent number: 12023952
    Abstract: Provided is a security item using the intensity of fluorescent materials and a user identification system using same, the security item containing fluorescent materials that have intrinsic luminescent characteristics when irradiated with excitation light, wherein the fluorescent materials are contained in an amount of 0.2-3.0 wt % on the basis of the weight of the security item, and the difference in relative value calculated by formula (I), according to a 0.2-0.5 wt % difference in the amount of the fluorescent materials, is at least 3. Formula (I): the relative value of ? wt % of fluorescent materials=(the relative intensity of the emission wavelength of ? wt % of the fluorescent materials×100)/(the relative intensity of the emission wavelength of 3.0 wt % of the fluorescent materials).
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: July 2, 2024
    Assignee: KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORPORATION
    Inventors: Hyun Jun Kim, Il Hoon Choi, Hong Keon Kim, Hyun Jin Oh
  • Patent number: 12024441
    Abstract: A cathode active material for a lithium secondary battery has a structure of a lithium-nickel-based metal oxide. A crystal size in a (104) plane defined by Equation 1 is less than 200 nm. A thickness of a TM slab measured by a Rietveld method in a crystal structure of a space group R-3m by an X-ray diffraction (XRD) analysis is 2.15 ? or less. A thickness of a Li slab thickness measured by the Rietveld method in the crystal structure of the space group R-3m by the XRD analysis is 2.585 ? or more.
    Type: Grant
    Filed: August 14, 2023
    Date of Patent: July 2, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Hee Jun Kweon, Jeong Bae Yoon, Ji Hoon Choi
  • Publication number: 20240214254
    Abstract: Provided is a discrete Fourier transform (DFT)-spread orthogonal frequency division multiplexing (OFDM) transmission method and transmitter including a phase shifter configured to generate a pi/2-binary phase shift keying (BPSK) symbol vector by phase-shifting a vector including M BPSK symbols, a DFT spreader configured to generate a DFT-spread pi/2-BPSK symbol vector by spreading the pi/2-BPSK symbol vector using an M-point DFT matrix, a circular extender configured to generate a circularly extended pi/2-BPSK symbol vector by periodically extending the DFT-spread pi/2-BPSK symbol vector, a frequency domain spectrum shaper configured to generate a frequency domain spectrum shaped pi/2-BPSK symbol vector by multiplying each element of the circularly extended pi/2-BPSK symbol vector by each element of a first shaping vector, and a subcarrier allocator configured to allocate the frequency domain spectrum shaped pi/2-BPSK symbol vector to subcarriers in an allocated frequency range.
    Type: Application
    Filed: September 1, 2021
    Publication date: June 27, 2024
    Inventors: Joon Ho CHO, Jeong Hoon CHOI
  • Patent number: 12019471
    Abstract: A window includes a first cover layer, a second cover layer, and a first adhesive part. The first cover layer includes a first non-folding area, a folding area, and a second non-folding area that are arranged in a first direction, and a plurality of first recessed portions recessed from a top surface of the folding area and extended in a second direction intersecting the first direction. The second cover layer is disposed on the first cover layer. The first adhesive part is disposed between the first cover layer and the second cover layer, and includes protrusions disposed in the plurality of first recessed portions of the first cover layer.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: June 25, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sanghoon Kim, Minsang Koo, Kyung-Man Kim, Seungho Kim, Min-Hoon Choi, Seongjin Hwang
  • Patent number: 12020373
    Abstract: In method for replaying a scanning process according to the present invention, position information and rotation information of a scanner are acquired while scanning a scan target is a scanning step, and the distance relationship and angle relationship with the scan target can be calculated according to the position information and rotation information of the scanner. The acquired information and relationship values can be linked with a scan time and stored, and scanning data, along with the acquired information, can be sequentially displayed over time in a display step. According to the method for replaying a scanning process, the process of scanning performed by a user can be examined in chronological order, and the examination process can be quickly performed by controlling replay speed and selecting scan time.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: June 25, 2024
    Assignee: MEDIT CORP.
    Inventors: Dong Hoon Lee, Won Hoon Choi
  • Patent number: 12021205
    Abstract: The present invention relates to a method of reusing a positive electrode material, and more particularly, the method includes: inputting a positive electrode for a lithium secondary battery comprising a current collector, and a positive electrode active material layer formed on the current collector and including a first positive electrode active material, a first binder and a first conducting agent, into a solvent; separating at least a portion of the positive electrode active material layer from the current collector; adding second binder powder to the solvent and performing primary mixing a resulting mixture; and preparing a positive electrode material slurry by adding a second positive electrode active material and a second conducting agent to the solvent and performing secondary mixing a resulting mixture.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: June 25, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Joo Yul Baek, Woo Ha Kim, In Seong Kim, Jun Muk Lim, Sang Hoon Choy
  • Publication number: 20240206095
    Abstract: An electronic device includes a display module including a folding display unit which extends in a first direction and be foldable with reference to a folding axis and a first non-folding display unit and a second non-folding display unit which are spaced apart from each other with the folding display unit therebetween; a support member disposed below the display module, and including a folding part having a plurality of patterns defined therein and corresponding to the folding display unit and a first non-folding part and a second non-folding part respectively corresponding to the first non-folding display unit and the second non-folding display unit; and an adhesive layer disposed between the display module and the support member. The adhesive layer has a modulus of about 1 megapascal (MPa) to about 1500 MPa at ?20 degrees Celsius) (° C.).
    Type: Application
    Filed: September 13, 2023
    Publication date: June 20, 2024
    Inventors: TAEHYEOG JUNG, BYUNGHOON KANG, MIN-HOON CHOI, SEONGJIN HWANG
  • Publication number: 20240206333
    Abstract: The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, the organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared with the conventional device using one component host compound.
    Type: Application
    Filed: January 18, 2024
    Publication date: June 20, 2024
    Inventors: Hee-Choon AHN, Young-Kwang KIM, Doo-Hyeon MOON, Su-Hyun LEE, Seon-Woo LEE, Chi-Sik KIM, Kyoung-Jin PARK, Nam-Kyun KIM, Kyung-Hoon CHOI, Jae-Hoon SHIM, Young-Jun CHO, Kyung-Joo LEE
  • Publication number: 20240204185
    Abstract: The cathode active material according to exemplary embodiments includes lithium metal oxide particle including a layered crystal structure and a cubic crystal structure, wherein the lithium metal oxide particle contains 80 mol % or more of nickel based on a total number of moles of all elements except for lithium and oxygen, and the lithium metal oxide particle includes the cubic crystal structure only in a region having a thickness of less than 200 nm from a surface thereof when analyzing a crystal structure thereof by a high-resolution transmission electron microscopy.
    Type: Application
    Filed: February 16, 2024
    Publication date: June 20, 2024
    Inventors: Yeong Bin YOO, Hee Jun KWEON, Tae Kyoung LEE, Ji Hoon CHOI, Kook Hyun HAN
  • Publication number: 20240204135
    Abstract: A display device includes a display panel including a first non-folding area, a second non-folding area, and a folding area disposed between the first non-folding area and the second non-folding area and a support member disposed under the display panel, including a glass, and including a first non-folding portion overlapping the first non-folding area in a plan view, a second non-folding portion overlapping the second non-folding area in a plan view, and a folding portion disposed between the first non-folding portion and the second non-folding portion, overlapping the folding area in a plan view, and including an opening pattern including openings extending in a first direction and having a width in a second direction intersecting the first direction of in a range of about 10 micrometers to about 200 micrometers.
    Type: Application
    Filed: July 31, 2023
    Publication date: June 20, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: MIN-HOON CHOI, SANGHOON KIM, SUNGHOON KIM, JINGYU SIM, TAEHYEOG JUNG, SEONGJIN HWANG
  • Patent number: 12011936
    Abstract: The present disclosure provides a droplet discharging device capable of minimizing misalignment of a plurality of heads. The droplet discharging device comprises a base including a head fixing region to which a plurality of heads are fixed; a pack holder disposed on the base and including an opening penetrated by the plurality of heads installed on the base; a guide pin installed on the pack holder and protruding towards the base; a guide holder installed on the base and fastened to the guide pin; a first fastening part installed on the pack holder and protruding towards the base; and a second fastening part installed on the base and fastened to the first fastening part, wherein a lock air is supplied to one of the first fastening part and the second fastening part, thus fastening the first fastening part and the second fastening part.
    Type: Grant
    Filed: September 17, 2022
    Date of Patent: June 18, 2024
    Assignee: SEMES CO., LTD.
    Inventors: Jang Mi Woo, Ki Hoon Choi, Young Hoon Jeong, Myung Jin Kim
  • Publication number: 20240190721
    Abstract: A cathode active material for a lithium secondary battery has a structure of a lithium-nickel-based metal oxide. A crystal size in a (104) plane defined by Equation 1 is less than 200 nm. A thickness of a TM slab measured by a Rietveld method in a crystal structure of a space group R-3m by an X-ray diffraction (XRD) analysis is 2.15 ? or less. A thickness of a Li slab thickness measured by the Rietveld method in the crystal structure of the space group R-3m by the XRD analysis is 2.585 ? or more.
    Type: Application
    Filed: August 14, 2023
    Publication date: June 13, 2024
    Inventors: Hee Jun KWEON, Jeong Bae YOON, Ji Hoon CHOI
  • Patent number: 12007514
    Abstract: A dynamic X-ray detecting panel, an X-ray detector including the same, and a method of driving an X-ray detector are disclosed. The method of driving the X-ray detector is a method of driving a dynamic X-ray detector including the X-ray detecting panel. The X-ray detecting panel includes multiple pixels arranged in a matrix, each of the pixels includes a readout thin film transistor, a reset thin film transistor, and a photodiode, and line reset, window time, and readout proceed with respect to the multiple pixels in each row.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: June 11, 2024
    Assignee: BIOSENSTECH INC
    Inventors: Seung Ik Jun, Han Bin Jang, Jae Hoon Choi
  • Publication number: 20240184328
    Abstract: A display device includes a display panel in which a first non-folding area, a folding area, and a second non-folding area may be sequentially defined in a first direction, and a lower plate which is coupled to a lower portion of the display panel, the lower plate including a plurality of patterns overlapping the folding area, wherein a minimum width of the display panel in the first direction is smaller than a minimum width of the lower plate in the first direction.
    Type: Application
    Filed: November 29, 2023
    Publication date: June 6, 2024
    Applicant: Samsung Display Co., Ltd.
    Inventors: SEONGJIN HWANG, BYUNGHOON KANG, SANGHOON KIM, SUNGHOON KIM, SEUNGHO KIM, JINGYU SIM, HYUNJI LEE, MIN-HOON CHOI
  • Publication number: 20240185558
    Abstract: An image sensing device including an image sensor configured to output a raw image by capturing an image of a subject and an image signal processor configured to perform a bad pixel correction process on the raw image on an image patch-by-image patch unit, compare pixels of an image patch of the raw image with a local saturation threshold value, determine a state of local saturation of the image patch based on a number of saturated pixels whose pixel values exceed the local saturation threshold value, and output a corrected image patch, which is obtained by correcting a pixel of the image patch with a corrected pixel value, with a replacement pixel value, or with a raw pixel value depending on the state of local saturation of the image patch.
    Type: Application
    Filed: November 20, 2023
    Publication date: June 6, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Hoon CHOI, Dong-Bum CHOI, Hyun Yup KWAK, Seung Won CHOI
  • Publication number: 20240186364
    Abstract: A display device is disclosed that includes a substrate, a light-emitting element disposed on the substrate, a first insulating layer disposed on the light-emitting element, and a driving element disposed on the first insulating layer, wherein the driving element passes through the first insulating layer and is electrically connected to the light-emitting element.
    Type: Application
    Filed: November 21, 2023
    Publication date: June 6, 2024
    Inventors: Hyo Jong Yi, Chong Hwon Lee, Seung Hyun Lee, Hoon Choi
  • Publication number: 20240188424
    Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.
    Type: Application
    Filed: October 13, 2023
    Publication date: June 6, 2024
    Inventors: Su-Hyun LEE, Kyung-Hoon CHOI, So-Young JUNG, Chi-Sik KIM, Soo-Yong LEE, Sang-Hee CHO, Young-Jun CHO, Young-Gil KIM, Bitnari KIM, Young-Jae KIM, Hyo-Nim SHIN
  • Publication number: 20240170636
    Abstract: An electrode manufacturing device that applies pressure to an electrode containing a coating part and a non-coating part is provided. The electrode manufacturing device includes: a first pressure roll that applies pressure to the non-coating part; a second pressure roll that applies pressure to the coating part; and a connection part that penetrates through the center of the first pressure roll and the center of the second pressure roll, respectively, wherein a difference between a radius of the first pressure roll and a radius of the second pressure roll is equal to or smaller than a step difference between the coating part and the non-coating part.
    Type: Application
    Filed: October 6, 2022
    Publication date: May 23, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Won Seob Song, Hwan Han Kim, Sang Hoon Choy, Jeong Soo Seol, Bumhyuk Lee