Patents by Inventor Jihoon Na

Jihoon Na 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: 20240376413
    Abstract: The present invention provides alcoholic beverages comprising salt and a preparation method thereof, and specifically, provides an effect of shielding bitterness as salt is comprised.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 14, 2024
    Inventors: Jaewoong LIM, Jihwan IM, Sua SHIM, Seong Wan PARK, Jihoon NA, Ji Yun KIM
  • Patent number: 12119542
    Abstract: An electronic device according to an embodiment disclosed herein includes a housing and a plurality of antenna modules disposed adjacent to an edge of the housing, wherein the plurality of antenna modules may include: a first antenna array including a printed circuit board, which includes a first face, a second face facing away from the first face, and a side face disposed between the first face and the second face, and a plurality of first antenna elements extending from a point on the first face to a point on the second face through the side face; and a second antenna array including a plurality of second antenna elements disposed on the first face. In addition, various embodiments conceived through the specification are possible.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: October 15, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jihoon Kim, Hyoseok Na, Jongin Lee
  • Patent number: 12074572
    Abstract: An electronic device and method thereof of are provided to prevent burnout due to overcurrent. An electronic device includes a power amplifier configured to amplify a transmission signal; a battery configured to provide a bias voltage to the at least one power amplifier; and an overcurrent protection circuit configured to prevent overcurrent from flowing through the power amplifier. The overcurrent protection circuit includes a configurer configured to configure a reference current value, based on the power amplifier; a measurer configured to measure a bias current value due to the bias voltage; a comparator configured to compare the measured bias current value with the reference current value; and a controller configured to recognize overcurrent flowing through the power amplifier and control provision of the bias voltage, based on a result of the comparison.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: August 27, 2024
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyunseok Choi, Jooseung Kim, Jihoon Kim, Hyoseok Na, Sanghun Sim, Namjun Cho
  • Patent number: 11729896
    Abstract: An apparatus for generating extreme ultraviolet (EUV) light includes a raw material supply unit supplying a plasma source for generating EUV light. An EUV light source unit uses a laser to generate plasma from the plasma source. A filter is configured to extract EUV light from the light. A first protective layer is disposed on a front surface of the filter. A frame having a first region exposing at least a portion of the filter or the first protective layer is disposed on the first protective layer. A width of the first region is smaller than a width of the first protective layer and smaller than or equal to a width of the filter.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: August 15, 2023
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jihoon Na, Mun Ja Kim, Jaewhan Sung, Byungchul Yoo, Jibeom Yoo, Hakseok Lee, Myeongjin Jeong, Hyunjune Cho
  • Publication number: 20230194845
    Abstract: An EUV photomask inspection apparatus includes a plurality of optical systems respectively forming different confocal points in a mask structure including an EUV photomask and a pellicle on the EUV photomask. A first optical system among the plurality of optical systems includes a first light source emitting first light having a wavelength in a visible light range, a beam splitter transmitting or reflecting the first light, an objective lens configured to allow the first light to pass through at least a portion of the mask structure to form a first focus in the mask structure, a first light detector configured to detect first reflected light reflected from the mask structure by the incident first light, and a pinhole plate in front of the first light source. The first light detector includes a detection module including a PMT and an APD, and a thermoelectric cooling.
    Type: Application
    Filed: November 18, 2022
    Publication date: June 22, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Garam Choi, Taejoong Kim, Jihoon Na, Changhoon Choi
  • Patent number: 11531277
    Abstract: An EUV mask inspection system includes a mask receiving unit configured to receive a manufactured EUV mask, a main chamber configured to perform an inspection on the EUV mask, and a load-lock chamber disposed between the mask receiving unit and the main chamber. The load-lock chamber includes a mask table for loading the EUV mask, an UV lamp disposed adjacent the mask table in a first direction, a cold trap disposed adjacent the mask table in a second direction, and a vacuum pump. The first direction is a direction perpendicular to a sidewall of the mask table, and the second direction is a direction perpendicular to a top surface of the mask table. The UV lamp is configured to evaporate water molecules on the EUV mask by irradiating UV light onto the EUV mask. The cold trap is configured to trap the water molecules evaporated from the EUV mask.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: December 20, 2022
    Inventors: Jihoon Na, Sungho Kang, Jaewhan Sung, Hak-Seok Lee, Hyunjune Cho
  • Publication number: 20220283519
    Abstract: An EUV mask inspection system includes a mask receiving unit configured to receive a manufactured EUV mask, a main chamber configured to perform an inspection on the EUV mask, and a load-lock chamber disposed between the mask receiving unit and the main chamber. The load-lock chamber includes a mask table for loading the EUV mask, an UV lamp disposed adjacent the mask table in a first direction, a cold trap disposed adjacent the mask table in a second direction, and a vacuum pump. The first direction is a direction perpendicular to a sidewall of the mask table, and the second direction is a direction perpendicular to a top surface of the mask table. The UV lamp is configured to evaporate water molecules on the EUV mask by irradiating UV light onto the EUV mask. The cold trap is configured to trap the water molecules evaporated from the EUV mask.
    Type: Application
    Filed: October 12, 2021
    Publication date: September 8, 2022
    Inventors: Jihoon Na, Sungho Kang, Jaewhan Sung, Hak-Seok Lee, Hyunjune Cho
  • Publication number: 20220167492
    Abstract: An apparatus for generating extreme ultraviolet (EUV) light includes a raw material supply unit supplying a plasma source for generating EUV light. An EUV light source unit uses a laser to generate plasma from the plasma source. A filter is configured to extract EUV light from the light. A first protective layer is disposed on a front surface of the filter. A frame having a first region exposing at least a portion of the filter or the first protective layer is disposed on the first protective layer. A width of the first region is smaller than a width of the first protective layer and smaller than or equal to a width of the filter.
    Type: Application
    Filed: September 7, 2021
    Publication date: May 26, 2022
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: JIHOON NA, MUN JA KIM, JAEWHAN SUNG, BYUNGCHUL YOO, JIBEOM YOO, HAKSEOK LEE, MYEONGJIN JEONG, HYUNJUNE CHO
  • Publication number: 20090052849
    Abstract: Disclosed are an optical fiber probe for side imaging and a method of manufacturing the same. An optical fiber probe according to an aspect of the invention includes a photonic crystal fiber, and an optical fiber lens that is formed by applying heat to a predetermined region including one end of the photonic crystal fiber and substantially removing air holes formed in the predetermined region. The optical fiber lens includes a light diffusion region that diffuses light propagating along a core of the photonic crystal fiber and focuses the light to enable side imaging, a reflector surface that reflects the light at a right angle to enable side imaging, and a lens surface that focuses the light. A small-sized optical fiber probe can be manufactured using a simple manufacturing process, and the optical fiber probe can be miniaturized. Therefore, a light measurement system can be miniaturized, which makes it possible to obtain side images of a very small sample, such as a blood vessel.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 26, 2009
    Applicant: Gwangju Institute of Science and Technology
    Inventors: Byeong Ha LEE, Hae Young Choi, Seon Young Ryu, Jihoon Na, Ik-Bu Sohn, Young-Chul Noh, Jongmin Lee