Patents by Inventor Seong Ahn

Seong Ahn 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: 20240254991
    Abstract: A compressor and a method for controlling the compressor detects the state of the suction refrigerant, thereby preventing the damage of the compressor and enabling stable operation. The compressor includes a compression unit equipped with a compression means for compressing a refrigerant, a motor unit coupled to the compression unit and compresses a suction refrigerant sucked through a suction port, an inverter unit with a detection unit for detecting a state of the suction refrigerant sucked through the suction port, and a control unit which controls the compression unit. The control unit controls by comparing a low flow condition which is set on the basis of a state in which the compression unit operates under an operating condition of a low refrigerant amount of the suction refrigerant and an actual flow condition of the suction refrigerant sucked into the motor unit when the compression unit is actually operated.
    Type: Application
    Filed: May 19, 2022
    Publication date: August 1, 2024
    Inventors: Gu Hyun Ryu, Chi Myeong Moon, Kweon Soo Lim, Chang Eon Park, Hyun Seong Ahn
  • Publication number: 20240228979
    Abstract: Disclosed are a novel Korean isolate of tomato yellow leaf curl virus (TYLCV) and infectious clones thereof, wherein: the use of an inventive recombinant vector comprising the nucleotide sequence of tomato yellow leaf curl virus (TYLCV) and Agrobacterium tumefaciens comprising the recombinant vector can effectively induce tomato yellow leaf curl virus infection in a crop even without an insect vector; an inventive infection system, compared with existing TYLCV Korean isolates, shows excellent infectivity in a plant, and thus can induce symptoms even in TYLCV-resistant varieties of tomatoes having existing widely used Ty-1 or Ty-2 resistant gene, so that the infectious system can be utilized as an artificial infection system in the future and can be applied in various studies in the future, such as a host plant range for tomato yellow leaf curl virus (TYLCV) and the correlation with the host plant.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 11, 2024
    Inventors: Suk Chan LEE, Nattanong BUPI, Nam Ju AHN, Woo Seong AHN, Dong Hyeon KIM, Hyojin IM
  • Patent number: 12031441
    Abstract: A scroll compressor including a first bearing rotatably supporting a rotary shaft relative to a casing at one side of the rotary shaft with respect to a motor, a second bearing rotatably supporting the rotary shaft relative to the casing at the other side of the rotary shaft with respect to the motor, and a third bearing rotatably supporting the rotary shaft relative to an orbiting scroll at the opposite side of the first bearing with respect to the second bearing. The distance between a first bearing center and a third bearing center is a predetermined distance, the distance between a motor center and the third bearing center is longer than the distance between the motor center and the first bearing center, and the distance between a second bearing center and the motor center is longer than the distance between the second bearing center and the third bearing center.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: July 9, 2024
    Assignee: Hanon Systems
    Inventors: Hyun Seong Ahn, Chi Myeong Moon, Kweon Soo Lim, Jae Hoon Lim, Soo Cheol Jeong
  • Patent number: 11802172
    Abstract: A composition for seeded polymerization includes: a compound having dithioate; a mercaptan compound; an aromatic vinyl monomer; and a conjugated diene monomer.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: October 31, 2023
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Du Seong Ahn, Gwanghoon Kwag, Jae Kon Suh
  • Patent number: 11692054
    Abstract: A composition for seeded polymerization includes: a seed copolymer which has a compound having dithioate, a mercaptan compound, a first aromatic vinyl monomer, and a first conjugated diene monomer, and has an average particle diameter of 10-30 nm; a second aromatic vinyl monomer; and a second conjugated diene monomer.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: July 4, 2023
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Du Seong Ahn, Gwanghoon Kwag, Jae Kon Suh
  • Publication number: 20230087740
    Abstract: A positive electrode active material precursor for a secondary battery, which is a secondary particle in which primary particles are aggregated, includes a core portion including nickel (Ni), cobalt (Co), and manganese (Mn), and a shell portion surrounding a surface of the core portion and including nickel (Ni), cobalt (Co), manganese (Mn), and aluminum (Al), wherein the core portion and the shell portion has rod-shaped primary particles, and an average major axis length of the primary particles of the shell portion is smaller than an average major axis length of the primary particles of the core portion. A method of preparing the positive electrode active material precursor, and a positive electrode active material prepared by using the positive electrode active material precursor are also provided.
    Type: Application
    Filed: January 29, 2021
    Publication date: March 23, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jin Hoo Jeong, Jun Seong Ahn, Myung Gi Jeong, Jun Won Lee
  • Patent number: 11473578
    Abstract: Provided is a scroll compressor which has a reduced noise vibration by minimizing an impact sound generated when the operation of the scroll compressor is stopped.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: October 18, 2022
    Assignee: Hanon Systems
    Inventors: Hyun Seong Ahn, Hyun Jun Park, In Cheol Shin, Kweon Soo Lim, Chi Myeong Moon, Chang Eon Park
  • Patent number: 11453272
    Abstract: A photocatalyst device including: a body; a light source part fixed to the body to irradiate ultraviolet light and having an LED and a substrate for fixing the LED thereto; a catalyst part fixed to the body to conduct photocatalytic reaction with the light irradiated by the light source part and thus to generate superoxygen radicals; and a heat radiating part disposed on the light source part to radiate the heat generated from the light source part, whereby the photocatalyst device purifies air and sterilizes and deodorizes the evaporator, while being easily mountable as a single module.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: September 27, 2022
    Assignee: Hanon Systems
    Inventors: Jae-Ho Kim, Ji-Yong Park, Youn-Woo Lim, Yong-Jun Jee, Gi-Woo Ro, Jun-Seong Ahn
  • Publication number: 20220268277
    Abstract: A scroll compressor including a first bearing rotatably supporting a rotary shaft relative to a casing at one side of the rotary shaft with respect to a motor, a second bearing rotatably supporting the rotary shaft relative to the casing at the other side of the rotary shaft with respect to the motor, and a third bearing rotatably supporting the rotary shaft relative to an orbiting scroll at the opposite side of the first bearing with respect to the second bearing. The distance between a first bearing center and a third bearing center is a predetermined distance, the distance between a motor center and the third bearing center is longer than the distance between the motor center and the first bearing center, and the distance between a second bearing center and the motor center is longer than the distance between the second bearing center and the third bearing center.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Inventors: Hyun Seong AHN, Chi Myeong MOON, Kweon Soo LIM, Jae Hoon LIM, Soo Cheol JEONG
  • Patent number: 11359627
    Abstract: A scroll compressor including a first bearing rotatably supporting a rotary shaft relative to a casing at one side of the rotary shaft with respect to a motor, a second bearing rotatably supporting the rotary shaft relative to the casing at the other side of the rotary shaft with respect to the motor, and a third bearing rotatably supporting the rotary shaft relative to an orbiting scroll at the opposite side of the first bearing with respect to the second bearing. The distance between a first bearing center and a third bearing center is a predetermined distance, the distance between a motor center and the third bearing center is longer than the distance between the motor center and the first bearing center, and the distance between a second bearing center and the motor center is longer than the distance between the second bearing center and the third bearing center.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: June 14, 2022
    Assignee: Hanon Systems
    Inventors: Hyun Seong Ahn, Chi Myeong Moon, Kweon Soo Lim, Jae Hoon Lim, Soo Cheol Jeong
  • Patent number: 11286020
    Abstract: A ballast water-free ship using a difference in the depth of the bottom shell plate between the bow/stern and the midship section and a construction method thereof. A stepped portion is formed between either the bow or the stern and the midship section, such that the depth of the bottom shell plate of either the bow or the stern differs from the depth of the bottom shell plate of the cargo containment in the midship section, so that cargo can be loaded and unloaded without ballast water operation.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 29, 2022
    Assignee: Korea Institute of Ocean Science & Technology
    Inventors: Hee Jin Kang, Jin Choi, Hae Seong Ahn, Kwang Soo Kim, Geun Tae Yim, Myoung Soo Kim
  • Patent number: 11261864
    Abstract: Scroll compressor includes a shaft rotatably supported to a casing; an eccentric bush having a recess part into which one end portion of the shaft is inserted, an eccentric part eccentric to the shaft, and a balance weight disposed at the opposite side of the eccentric part with respect to the recess part; an orbiting scroll for performing the orbiting motion in interlock with the eccentric part; and a fixed scroll for forming a compression chamber together with the orbiting scroll. The casing has an orbiting groove in which the eccentric bush performs the orbiting motion, a buffer member is interposed between the orbiting groove and the balance weight. Rotation clearance is formed between the recess part and the shaft. The buffer member is compressed between the balance weight and the orbiting groove before the recess part and the shaft contact each other by the rotation clearance.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: March 1, 2022
    Assignee: Hanon Systems
    Inventors: Chi Myeong Moon, Chang Eon Park, In Cheol Shin, Hyun Seong Ahn, Kweon Soo Lim
  • Patent number: 11225966
    Abstract: A scroll compressor includes a shaft being rotated by a drive source, an eccentric bush including a recess part into which the shaft is inserted and an eccentric part being eccentric to the shaft, an orbiting scroll configured to perform an orbiting motion in interlock with the eccentric part, a fixed scroll tooth-engaged with the orbiting scroll, and a buffer member configured to prevent an outer periphery of the shaft and an inner periphery of the recess part from coming in contact with each other, wherein the buffer member is formed to be able to perform a relative motion with respect to the shaft and the recess part. Accordingly, the scrolls are prevented from being damaged, an impact sound is prevented from being generated, and an increase of an inertial force and an unbalance force of a rotating body is suppressed.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: January 18, 2022
    Assignee: HANON SYSTEMS
    Inventors: Chi Myeong Moon, Chang Eon Park, Hyun Seong Ahn
  • Patent number: 11189829
    Abstract: The present disclosure relates to a positive electrode active material for a lithium secondary battery and a method of preparing the same, and more particularly, to a positive electrode active material for a lithium secondary battery comprising a lithium-nickel-based transition metal oxide; and a coating layer formed on the lithium-nickel-based transition metal oxide, the coating layer comprising a metal oxalate compound, and a method of preparing the same.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: November 30, 2021
    Inventors: Jun Seok Nho, Seung Beom Cho, Hyun Ah Park, Jun Seong Ahn
  • Patent number: 11136979
    Abstract: A scroll compressor that includes a rotating shaft, an eccentric bush having a recess, into which one end of the shaft is inserted, and an eccentric portion eccentric to the shaft, an orbiting scroll operatively connected to the eccentric portion for orbiting, a fixed scroll engaged with the orbiting scroll, and a buffer member interposed between the one end of the shaft and the recess. Therefore, it is possible to prevent damage to the scrolls due to liquid refrigerant compression during initial operation and to prevent an impact sound between the shaft and the eccentric bush due to the rotational clearance therebetween.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: October 5, 2021
    Assignee: HANON SYSTEMS
    Inventors: Chi Myeong Moon, In Cheol Shin, Kweon Soo Lim, Chang Eon Park, Hyun Seong Ahn, Soo Cheol Jeong
  • Publication number: 20210277895
    Abstract: Disclosed herein is a scroll compressor that includes a first bearing rotatably supporting a rotary shaft relative to a casing at one side of the rotary shaft with respect to a motor, a second bearing rotatably supporting the rotary shaft relative to the casing at the other side of the rotary shaft with respect to the motor, and a third bearing rotatably supporting the rotary shaft relative to an orbiting scroll at the opposite side of the first bearing with respect to the second bearing, wherein the distance between a first bearing center and a third bearing center may be a predetermined distance, the distance between a motor center and the third bearing center may be longer than the distance between the motor center and the first bearing center, and the distance between a second bearing center and the motor center may be longer than the distance between the second bearing center and the third bearing center. Thus, it is possible to prevent the damage of the second bearing under poor load conditions.
    Type: Application
    Filed: February 13, 2018
    Publication date: September 9, 2021
    Inventors: Hyun Seong AHN, Chi Myeong MOON, Kweon Soo LIM, Jae Hoon LIM, Soo Cheol JEONG
  • Patent number: 11084355
    Abstract: Disclosed herein is a compressor that includes a casing, a fastening part disposed at a portion corresponding to a support bracket provided in a compressor mounting part of a vehicle on the casing, and a fastener connecting the support bracket to the fastening part, wherein a compressor's center of gravity and a compressor's point of support supported by the fastener are positioned in a longitudinal direction of the fastener. The present disclosure has an effect of relieving rotational moment and fatigue stress occurring in the compressor when the compressor is mounted to the vehicle.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: August 10, 2021
    Assignee: Hanon Systems
    Inventors: In Cheol Shin, Chi Myeong Moon, Hyun Seong Ahn, Kweon Soo Lim, Jae Hoon Lim, Soo Cheol Jeong
  • Publication number: 20210221471
    Abstract: A ballast water-free ship using a difference in the depth of the bottom shell plate between the bow/stern and the midship section and a construction method thereof. A stepped portion is formed between either the bow or the stern and the midship section, such that the depth of the bottom shell plate of either the bow or the stern differs from the depth of the bottom shell plate of the cargo containment in the midship section, so that cargo can be loaded and unloaded without ballast water operation.
    Type: Application
    Filed: March 28, 2018
    Publication date: July 22, 2021
    Inventors: Hee Jin KANG, Jin CHOI, Hae Seong AHN, Kwang Soo KIM, Geun Tae YIM, Myoung Soo KIM
  • Publication number: 20210039480
    Abstract: A photocatalyst device including: a body; a light source part fixed to the body to irradiate ultraviolet light and having an LED and a substrate for fixing the LED thereto; a catalyst part fixed to the body to conduct photocatalytic reaction with the light irradiated by the light source part and thus to generate superoxygen radicals; and a heat radiating part disposed on the light source part to radiate the heat generated from the light source part, whereby the photocatalyst device purifies air and sterilizes and deodorizes the evaporator, while being easily mountable as a single module.
    Type: Application
    Filed: October 23, 2020
    Publication date: February 11, 2021
    Inventors: Jae-Ho KIM, Ji-Yong PARK, Youn-Woo LIM, Yong-Jun JEE, Gi-Woo RO, Jun-Seong AHN
  • Patent number: 10879529
    Abstract: The present invention relates to surface-coated positive electrode active material particles and a secondary battery including the same, and specifically, it provides surface-coated positive electrode active material particles including positive electrode active material particles and a coating layer applied on a surface of the positive electrode active material particles, wherein the coating layer includes a polyimide comprising one or more structures selected from the group consisting of pyrrole, aniline, and carbazole. The surface-coated positive electrode active material particles according to the present invention includes a coating layer including a polyimide and metal ions; and since a direct contact between the positive electrode active material particles and an electrolyte can be prevented, a side reaction therebetween can be inhibited, and both excellent lithium ion mobility and excellent electron conductivity can be exhibited.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: December 29, 2020
    Inventors: Wook Jang, Seung Beom Cho, Jin Young Park, Kyung Jun Kim, Jun Seong Ahn