Patents by Inventor Ah Rang LEE

Ah Rang LEE 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: 20230391743
    Abstract: The present invention relates to a method of preparing an organosulfur compound, and more particularly, to a method of preparing an organosulfur compound including a step of synthesizing an organosulfur compound by reacting specific compounds with a metal hypohalite under a ruthenium catalyst in a mixed solvent containing water and an organic solvent, wherein the metal hypohalite is introduced in a solid state and a portion thereof reacts in an undissolved state. According to the present invention, the present invention has an effect of providing an organosulfur compound preparation method capable of preparing an organosulfur compound in high yield due to excellent reaction stability, short reaction time, and reduced side reactions.
    Type: Application
    Filed: December 18, 2020
    Publication date: December 7, 2023
    Inventors: Jong Jin HA, Ah Rang LEE, Seok Jong LEE, Hee Geun PARK, Kwang Ju JUNG, Jeong Geun PARK
  • Publication number: 20230391793
    Abstract: The present invention relates to a method of preparing an organosulfur compound, and more particularly, to a method of preparing an organosulfur compound including a step of synthesizing an organosulfur compound by reacting specific compounds with a metal hypohalite under a ruthenium catalyst in a mixed solvent containing water and an organic solvent, wherein reaction temperature during the synthesis is 0 to 25° C. According to the present invention, the present invention has an effect of providing an organosulfur compound preparation method capable of preparing an organosulfur compound in high yield due to excellent reaction stability, short reaction time, and reduced side reactions.
    Type: Application
    Filed: December 18, 2020
    Publication date: December 7, 2023
    Inventors: Jong Jin HA, Ah Rang LEE, Seok Jong LEE, Hee Geun PARK, Kwang Ju JUNG, Jeong Geun PARK
  • Patent number: 11667647
    Abstract: The disclosure provides a delayed fluorescent compound of the Formula and an organic light emitting diode including a first electrode, a second electrode and an organic emitting layer between the first and second electrodes, where the delayed fluorescent compound is included in the organic emitting layer, and an organic light emitting display device including the organic emitting layer.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 6, 2023
    Assignees: LG Display Co., Ltd., Soulbrain Co., Ltd.
    Inventors: Suk-Young Bae, Tae-Ryang Hong, Jun-Yun Kim, Jin-Hee Kim, Ah-Rang Lee
  • Patent number: 11557731
    Abstract: The present disclosure provides an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; and an emitting material layer. The emitting material layer includes a p-type host, a n-type host and a phosphorescent dopant and positioned between the first electrode and the second electrode, wherein a first energy level of a HOMO of the p-type host is equal to or lower than a second energy level of a HOMO of the n-type host, and a difference between an energy level of a singlet state of the n-type host and an energy level of a triplet state of the n-type host is greater than 0.3 eV and smaller than 0.5 eV.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 17, 2023
    Assignees: LG DISPLAY CO., LTD., SOULBRAIN CO., LTD.
    Inventors: Hyong-Jong Choi, Tae-Ryang Hong, Jun-Yun Kim, Jin Hee Kim, Ah-Rang Lee
  • Patent number: 10890456
    Abstract: A method of providing route guidance includes: acquiring, by a sensor, traveling environment information including at least a target time of arrival at a destination in a vehicle; determining, by a controller, whether the target time of arrival is satisfiable by the vehicle; determining, by the controller, whether the target time of arrival is satisfiable by a public transport connection upon determining that the target time of arrival is not satisfiable by the vehicle, and selecting, by the controller, a parking lot according to a criterion upon determining that the target time of arrival is satisfiable by the public transport connection.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: January 12, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ah Rang Lee, Kyo Woong Choo, Yeon Ji Kim, Jeong Hun Kim
  • Publication number: 20200212309
    Abstract: The present disclosure provides an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; and an emitting material layer. The emitting material layer includes a p-type host, a n-type host and a phosphorescent dopant and positioned between the first electrode and the second electrode, wherein a first energy level of a HOMO of the p-type host is equal to or lower than a second energy level of a HOMO of the n-type host, and a difference between an energy level of a singlet state of the n-type host and an energy level of a triplet state of the n-type host is greater than 0.3 eV and smaller than 0.5 eV.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicants: LG Display Co., Ltd., Soulbrain Co., Ltd.
    Inventors: Hyong-Jong CHOI, Tae-Ryang HONG, Jun-Yun KIM, Jin Hee KIM, Ah-Rang LEE
  • Publication number: 20200207778
    Abstract: The disclosure provides a delayed fluorescent compound of the Formula and an organic light emitting diode including a first electrode, a second electrode and an organic emitting layer between the first and second electrodes, where the delayed fluorescent compound is included in the organic emitting layer, and an organic light emitting display device including the organic emitting layer.
    Type: Application
    Filed: December 12, 2019
    Publication date: July 2, 2020
    Applicants: LG Display Co., Ltd., Soulbrain Co., Ltd.
    Inventors: Suk-Young BAE, Tae-Ryang HONG, Jun-Yun KIM, Jin-Hee KIM, Ah-Rang LEE
  • Publication number: 20200189525
    Abstract: An active vehicle control notification method may include receiving external data from a server by a vehicle, determining whether the external data received from the server and a control driving condition of the vehicle are matched, by the vehicle, when the external data and the control driving condition are not matched, correcting the external data based on the control driving condition inside the vehicle, and uploading the corrected external data to the server.
    Type: Application
    Filed: May 17, 2019
    Publication date: June 18, 2020
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yeon Ji KIM, Kyo Woong CHOO, Jeong Hun KIM, Ah Rang LEE
  • Publication number: 20200049518
    Abstract: A method of providing route guidance includes: acquiring, by a sensor, traveling environment information including at least a target time of arrival at a destination in a vehicle; determining, by a controller, whether the target time of arrival is satisfiable by the vehicle; determining, by the controller, whether the target time of arrival is satisfiable by a public transport connection upon determining that the target time of arrival is not satisfiable by the vehicle, and selecting, by the controller, a parking lot according to a criterion upon determining that the target time of arrival is satisfiable by the public transport connection.
    Type: Application
    Filed: December 6, 2018
    Publication date: February 13, 2020
    Inventors: Ah Rang LEE, Kyo Woong CHOO, Yeon Ji KIM, Jeong Hun KIM
  • Publication number: 20190288215
    Abstract: The present invention provides a compound of Chemical Formula 1 and a light emitting device comprising the same.
    Type: Application
    Filed: November 15, 2018
    Publication date: September 19, 2019
    Inventors: Seok-Jong LEE, Jin-Hee KIM, Eun-Chul SHIN, Jae-Kyo PARK, Hyun-Young YOO, Ah Rang LEE