Patents by Inventor Kwan Han

Kwan Han 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: 12370161
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating pruritus and/or atopy using an N-acetylamino acid or an N-acylamino acid having almost no side effects on the human body. Also, the present disclosure relates to a cosmetic composition for moisturizing skin or soothing skin. The composition of the present disclosure may be utilized to ameliorate a problematic skin condition caused by various causes, or to safely and effectively alleviate or treat pruritus and/or atopy without concern about side effects.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: July 29, 2025
    Assignees: STEMDR INC., INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Myung-Kwan Han, Kwangho Lee
  • Patent number: 12261927
    Abstract: The master device includes a first pad connected to a slave device through a first wire; a second pad connected to the slave device through a second wire; and a communication interface to transmit a communication control signal to the slave device through the first pad, and, through the second pad, to transmit a first data signal synchronized with the communication control signal to the slave device and to receive a second data signal synchronized with the communication control signal from the slave device. The first data signal is transmitted to the slave device by the master device in a write mode and the second data signal is transmitted to the master device by the slave device in a read mode. The communication interface is configured to start the read mode by transiting the communication control signal from a first voltage level to a second voltage level while the second pad has a predetermined voltage level.
    Type: Grant
    Filed: July 13, 2023
    Date of Patent: March 25, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong Kwan Han
  • Patent number: 12212238
    Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: January 28, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Dong Kwan Han
  • Publication number: 20240283628
    Abstract: The master device includes a first pad connected to a slave device through a first wire; a second pad connected to the slave device through a second wire; and a communication interface to transmit a communication control signal to the slave device through the first pad, and, through the second pad, to transmit a first data signal synchronized with the communication control signal to the slave device and to receive a second data signal synchronized with the communication control signal from the slave device. The first data signal is transmitted to the slave device by the master device in a write mode and the second data signal is transmitted to the master device by the slave device in a read mode. The communication interface is configured to start the read mode by transiting the communication control signal from a first voltage level to a second voltage level while the second pad has a predetermined voltage level.
    Type: Application
    Filed: July 13, 2023
    Publication date: August 22, 2024
    Inventor: Dong Kwan HAN
  • Patent number: 11869431
    Abstract: A power provider includes: a first power converter to convert an input voltage, and output a first power voltage to a display panel through a first power line; a second power converter to convert the input voltage, and output a second power voltage to the display panel through a second power line; and a short circuit detecting circuit to detect a short-circuit of the first power line and the second power line in the display panel, by determining whether or not a level of a sensed voltage measured at the second power line is greater than or equal to a reference short circuit voltage level during a short circuit detecting period. The short circuit detecting circuit is to vary a length of the short circuit detecting period and the reference short circuit voltage level in response to a driving frequency.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: January 9, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong Kwan Han
  • Publication number: 20230248682
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating pruritus and/or atopy using an N-acetylamino acid or an N-acylamino acid having almost no side effects on the human body. Also, the present disclosure relates to a cosmetic composition for moisturizing skin or soothing skin. The composition of the present disclosure may be utilized to ameliorate a problematic skin condition caused by various causes, or to safely and effectively alleviate or treat pruritus and/or atopy without concern about side effects.
    Type: Application
    Filed: March 23, 2023
    Publication date: August 10, 2023
    Applicants: STEMDR INC., INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Myung-Kwan HAN, Kwangho LEE
  • Publication number: 20230238885
    Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.
    Type: Application
    Filed: March 31, 2023
    Publication date: July 27, 2023
    Inventor: Dong Kwan Han
  • Publication number: 20230138351
    Abstract: A power provider includes: a first power converter to convert an input voltage, and output a first power voltage to a display panel through a first power line; a second power converter to convert the input voltage, and output a second power voltage to the display panel through a second power line; and a short circuit detecting circuit to detect a short-circuit of the first power line and the second power line in the display panel, by determining whether or not a level of a sensed voltage measured at the second power line is greater than or equal to a reference short circuit voltage level during a short circuit detecting period. The short circuit detecting circuit is to vary a length of the short circuit detecting period and the reference short circuit voltage level in response to a driving frequency.
    Type: Application
    Filed: June 24, 2022
    Publication date: May 4, 2023
    Inventor: Dong Kwan HAN
  • Publication number: 20230125582
    Abstract: The subject invention relates to two-stage inoculation and two-stage fermentation process which are performed by the inoculation time difference and staged fermentation. In the first stage, yeast, lactic acid bacteria and Acetobacter aceti are inoculated into a fermentation tank to perform primary fermentation to produce primary fermented material. In the second stage, yeast is added into the primary fermented material in a container to perform the secondary fermentation to produce secondary fermented material, and then the secondary fermented material is pasteurized to deactivate yeast, lactic acid bacteria and Acetobacter aceti in the container and stop fermentation reaction. Finally, the secondary fermented material is cooled to ambient temperature to prepare the kombucha fermented beverage preserving active fermentative bacteria and enzyme at ambient temperature. The invention is help to improve the preservation convenience of the kombucha fermented beverage and avoid excessive alcohol concentration.
    Type: Application
    Filed: September 19, 2022
    Publication date: April 27, 2023
    Inventors: Yu-Fen WANG, Kwan-Han CHEN, Hung-Chi HSIAO, Meng-Hsuan CHUANG, Yen-Chung CHEN, Yu-Shin CHEN, Pi-Feng TSAO, Chun-En GAO
  • Patent number: 11637495
    Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 25, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Dong Kwan Han
  • Publication number: 20230026277
    Abstract: Provided is a novel compound and a use thereof. A novel compound according to the presently claimed subject matter induces the activation of MKP-1 protein to block the cellular signaling pathway proceeding in the order of p38/CK2?/NF-?B, thereby very effectively inhibiting an inflammatory response occurring in a respiratory disease. Therefore, a respiratory disease can be prevented, alleviated, or treated by orally administering the novel compound according to the presently claimed subject matter.
    Type: Application
    Filed: November 24, 2020
    Publication date: January 26, 2023
    Applicant: MICROX CO., LTD.
    Inventors: Hern Ku LEE, Myung Kwan HAN, Ki Bum HONG, Ji Hoon LEE, Ji Hoon YU, Jusuk LEE, Shun Young IM, Hwa Ryung SONG
  • Publication number: 20220400695
    Abstract: Disclosed herein is a process for producing a peanut milk product, which includes subjecting a milk material to a hydrolysis reaction with lactase and transglucosidase to obtain a milk product, immersing peanut kernels in water to obtain swelled peanut kernels, subjecting the swelled peanut kernels to a steam cooking treatment to obtain steamed peanut kernels, and admixing the milk product with the steamed peanut kernels, followed by subjecting a mixture thus obtained to a heating treatment, so as to obtain the peanut milk product. A method for improving gut health using the peanut milk product and a canned food containing the peanut milk product are also disclosed.
    Type: Application
    Filed: June 17, 2022
    Publication date: December 22, 2022
    Inventors: Kwan-Han CHEN, Hung-Chi HSIAO, Chun-Liang CHOU, Li-Chueh HUANG, Yun-Wen CHEN, Pei-Hsiu HUANG
  • Publication number: 20220338496
    Abstract: The present invention relates to an oligo-saccharide oat liquid composition, an oligo-saccharide oat powder composition and an oligo-saccharide oat drink having improved properties and immunomodulatory efficacy (for example, promotion of proliferation of immune cells), a micro-milling process involving quadri-enzyme hydrolysis for preparing the same, and uses thereof.
    Type: Application
    Filed: April 21, 2022
    Publication date: October 27, 2022
    Inventors: Kwan-Han CHEN, HUNG-CHI HSIAO, CHUN-LIANG CHOU, HAI-FENG CHANG, YI-SHIAN WANG, YUN-WEN CHEN, PEI-HSIU HUANG, PEI-CHEN HSIEH
  • Publication number: 20220257664
    Abstract: The present disclosure is novel musculoskeletal stem cells (MSSCs) derived from embryonic stem cells (ESCs) or induced pluripotent stem cells (iPSCs), and a medium composition for selectively differentiation into bone, tooth, cartilage, ligament and muscle, and a method for inducing differentiation thereof.
    Type: Application
    Filed: April 23, 2020
    Publication date: August 18, 2022
    Applicant: CELLATOZ THERAPEUTICS, INC.
    Inventor: Myung-Kwan HAN
  • Patent number: 11413333
    Abstract: The present invention relates to a composition containing an inducer of SIRT1 (silent mating type information regulation 2 homolog) expression for preventing or treating sepsis or septic shock. The inducer of SIRT1 expression can remarkably reduce the mortality caused by sepsis or septic shock by reducing pro-inflammatory cytokines and increasing anti-inflammatory cytokines. Therefore, the inducer of SIRT1 expression is useful for preventing or treating sepsis or septic shock.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: August 16, 2022
    Inventors: Myung Kwan Han, Chae Hwa Yoo, Eun Kyung Song, Seung Ok Lee
  • Publication number: 20220233502
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating asthma, rhinitis and/or conjunctivitis using an N-acylamino acid, which has almost no side effect on the human body. The composition of the present disclosure has an excellent effect of alleviating the symptoms of asthma by exhibiting alleviation effects on both inflammatory response in the airway and airway fibrosis, which are major clinical symptoms of asthma, and thus can be effectively used in drugs or foods for alleviating asthma. In addition, it can be usefully used in drugs or foods for alleviating rhinitis and conjunctivitis since it significantly alleviates the clinical symptoms of rhinitis and conjunctivitis.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 28, 2022
    Applicant: STEMDR INC.
    Inventors: Myung-Kwan HAN, Kwangho LEE
  • Publication number: 20220233485
    Abstract: The present disclosure relates to a composition for preventing, alleviating or treating pruritus and/or atopy using an N-acetylamino acid or an N-acylamino acid having almost no side effects on the human body. Also, the present disclosure relates to a cosmetic composition for moisturizing skin or soothing skin. The composition of the present disclosure may be utilized to ameliorate a problematic skin condition caused by various causes, or to safely and effectively alleviate or treat pruritus and/or atopy without concern about side effects.
    Type: Application
    Filed: February 10, 2022
    Publication date: July 28, 2022
    Applicants: STEMDR INC., INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Myung-Kwan HAN, Kwangho LEE
  • Patent number: 11393393
    Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: July 19, 2022
    Inventors: Dong Kwan Han, Sung Chun Park
  • Publication number: 20220093040
    Abstract: A display device and an operating method of the display device are provided. The display device may include: a first transistor controlled by a first control signal to connect an input terminal to which an input voltage is applied and a first node; a second transistor controlled by a second control signal to connect a second node to which a power supply voltage is outputted and the first node; an overcharge recognition circuit configured to receive a first reference voltage, a feedback voltage, and a second reference voltage, to determine whether it is overcharged, and to output an overcharge recognition signal; and a discharge circuit configured to provide a first discharge path for discharging the power supply voltage based on an enable signal generated depending on the overcharge recognition signal.
    Type: Application
    Filed: May 14, 2021
    Publication date: March 24, 2022
    Inventors: Dong Kwan HAN, Sung Chun PARK
  • Patent number: RE50313
    Abstract: The present disclosure relates to a novel musculoskeletal stem cell (MSSC) differentiated from an ESC (embryonic stem cell) or an iPSC (induced pluripotent stem cell). The musculoskeletal stem cell of the present disclosure can be easily induced from a human embryonic stem cell or a human-derived pluripotent stem cell and can be effectively differentiated not only into bone but also into cartilage, tendon and muscle. Accordingly, it can be usefully used for prevention or treatment of various musculoskeletal diseases.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: February 25, 2025
    Assignee: CELLATOZ THERAPEUTICS, INC.
    Inventor: Myung-Kwan Han