Patents by Inventor Chang-hwan Kim

Chang-hwan Kim 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).

  • Method for displaying soft key and electronic device thereof
    Patent number: 10852944
    Abstract: A method and an apparatus for displaying a soft key in an electronic device are provided. The electronic device includes a display, and a processor. The processor may control the display to display an execution screen of an application and a soft key, determine whether the execution screen of the application is changed, and control the display to change a graphic attribute of a soft key display region in response to changing the execution screen of the application.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: December 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Hwan Kim, Jeong-Won Ko, Joong-Hun Kwon, Sangdeuk Nam, Seung Wook Nam, Myoung-Soo Park, Sunyoung Park, Kyungjun Lee, Dong Oh Lee, Junwon Jung, Huichul Yang, Hyunyeul Lee, Soojin Jeong Lim
  • Catalyst and method for preparing catalyst
    Patent number: 10850263
    Abstract: A catalyst includes LTA zeolite including copper ions, wherein a Si/Al ratio of the LTA zeolite is 2 to 50. The catalyst is coated on a honeycomb carrier or a filter. The catalyst removes NOx from a reaction gas at 100° C. or above. The catalyst has an NOx conversion rate of 80% at 450° C. or above.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 1, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Suk Bong Hong, Donghui Jo, Taekyung Ryu, Gi Tae Park, In-Sik Nam, Pyung Soon Kim, Chang Hwan Kim
  • HYDROCARBON ADSORBENT
    Publication number: 20200360891
    Abstract: A hydrocarbon adsorbent, according to one embodiment of the present invention, comprises a copper-containing ZSM-5 zeolite, wherein a Si/Al molar ratio of the ZSM-5 zeolite may be 11.5 to 40, and the amount of the copper included is 1 wt % to 10 wt %.
    Type: Application
    Filed: December 28, 2018
    Publication date: November 19, 2020
    Inventors: Chun Yong Kang, Chang Hwan Kim, Jungkyu Choi, Eun-Hee Jang, Jin Seong Kim, La Young Choi
  • After treatment system and after treatment method for lean-burn engine
    Patent number: 10830118
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. In the after treatment method, a rich air/fuel ratio (AFR) is controlled in multiple phases in response to detecting that conversion to the rich AFR is desired.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 10, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Seung Jae Yi
  • After treatment system and after treatment method for lean-burn engine
    Patent number: 10808588
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. NH3 generation in the ammonia production catalyst module is changed according to a temperature and a temperature change rate of the SCR catalyst.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 20, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Dohyung Kim
  • HYDROCARBON ADSORBENT
    Publication number: 20200324268
    Abstract: A hydrocarbon adsorbent, according to one embodiment of the present invention, comprises a copper-containing ZSM-5 zeolite, wherein a Si/Al molar ratio of the ZSM-5 zeolite may be 11.5 to 40, and the amount of the copper included is 1 wt % to 10 wt %.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 15, 2020
    Inventors: Chun Yong Kang, Chang Hwan Kim, Jungkyu Choi, Eun-Hee Jang, Jin Seong Kim, La Young Choi
  • Cu/LTA catalyst and exhaust system, and manufacturing method of cu/LTA catalyst
    Patent number: 10799854
    Abstract: Provided herein is an exhaust system comprising a diesel particulate filter coated with a selective catalytic reduction (SDPF) wherein the SCR is coated with a Cu/LTA catalyst comprising a LTA zeolite that includes copper ions and the SCR is coated on a high pore diesel particulate matter filter, wherein a ratio of copper and aluminum is from about 0.14 to about 0.48, and wherein the Si/Al ratio of the LTA zeolite is from about 8 to about 100.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 13, 2020
    Assignee: Hyundai Motor Company
    Inventors: Pyung Soon Kim, Chang Hwan Kim, ChangHo Jung
  • Catalyst oxygen purge control apparatus and method
    Patent number: 10760461
    Abstract: A catalyst oxygen purge control method may include a catalyst oxygen purge control method during a cold engine period of a catalyst oxygen purge control apparatus which includes a three way catalytic converter through which an exhaust gas combusted when air and fuel are mixed in a combustion chamber is exhausted and the exhaust gas passes, wherein the method includes determining whether a fuel cut condition of an injector which injects the fuel to the combustion chamber is satisfied, performing fuel cut of the injector when the fuel cut condition is satisfied, measuring an oxygen storage capacity of the three way catalyst, and adjusting an oxygen purge time based on the measured oxygen storage capacity.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: September 1, 2020
    Assignees: Hyundai Motor Company, Hyundai Kefico Corporation, Kia Motors Corporation
    Inventors: Jin Woo Choung, Chang Hwan Kim, SungJae Kim, SooMin Lee
  • PORTABLE COMPLEX SENSOR DEVICE FOR MEASURING MULTIPLE ITEMS OF BIOMETRIC INFORMATION, AND MEASUREMENT METHOD
    Publication number: 20200268295
    Abstract: A portable complex sensor device for measuring multiple items of biometric information, according to the present invention, comprises: a plurality of electrodes for receiving the biometric information; a plurality of biometric information measuring circuits for measuring the biometric information received from the plurality of electrodes; a plurality of current sensors which are always supplied with power so as to sense electric current when an object to be measured contacts the electrodes; a wireless communication means for transmitting and receiving data to and from a smart phone; and a microcontroller for controlling the power supply of a battery by being operated in a sleep mode or an active mode on the basis of whether the current sensors have sensed the electric current.
    Type: Application
    Filed: August 8, 2017
    Publication date: August 27, 2020
    Applicant: WELLBEINGSOFT INC.
    Inventors: In Deok Hwang, Chang Hwan Kim
  • EXHAUST GAS PURIFICATION SYSTEM FOR VEHICLE AND METHOD OF CONTROLLING THE SAME
    Publication number: 20200271067
    Abstract: An exhaust gas purification system for vehicle includes: a housing disposed on an exhaust pipe to receive a exhaust gas discharged from an engine and to exhaust the exhaust gas passed rearward; a front end catalyst disposed in the housing to purify the exhaust gas flowing into the housing through a front end of the housing; a rear end catalyst disposed in the housing to purify the exhaust gas passing through the front end catalyst before the exhaust gas flows out to a rear end of the housing; and a controller connected to the exhaust pipe at a front end of the housing to control a concentration of unburned fuel contained in the exhaust gas flowing into the housing.
    Type: Application
    Filed: August 26, 2019
    Publication date: August 27, 2020
    Inventors: Hyokyung LEE, Chang Hwan Kim
  • ELECTRONIC DEVICE AND METHOD FOR CONTROLLING DISPLAY IN ELECTRONIC DEVICE
    Publication number: 20200264717
    Abstract: An electronic device is provided. The electronic device includes a touchscreen, at least one processor electrically connected with the touchscreen, and a memory electrically connected with the processor. The memory may store instructions executed to enable the at least one processor to display a first window for running a first application and a second window for running a second application on the touchscreen, display a virtual keypad on a portion of the first window and a portion of the second window corresponding to a first input to a focused window of the first window and the second window, and vary a size of the virtual keypad corresponding to a second input to the virtual keypad.
    Type: Application
    Filed: May 4, 2020
    Publication date: August 20, 2020
    Inventors: Sun-Young PARK, Jeong-Won KO, Joong-Hun KWON, Chang-Hwan KIM, Sang-Deuk NAM, Seung-Wook NAM, Myoung-Soo PARK, Kyung-Jun LEE, Dong-Oh LEE, Jun-Won JUNG, Hui-Chul YANG, Hyun-Yeul LEE, Soojin Jeong Lim
  • AFTER TREATMENT SYSTEM AND AFTER TREATMENT METHOD FOR LEAN-BURN ENGINE
    Publication number: 20200248605
    Abstract: An after treatment system for a lean-burn engine is disclosed. The after treatment system is sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. An exhaust flow changer is disposed between the ammonia production catalyst module and the SCR catalyst. The exhaust flow changer changes flow of an exhaust gas discharged from the ammonia production catalyst module according to a temperature of the SCR catalyst.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Dohyung Kim
  • AMMONIA PRODUCTION CATALYST AND AFTER TREATMENT SYSTEM
    Publication number: 20200248606
    Abstract: An after treatment system is disclosed. The after treatment system may include an exhaust pipe through which an exhaust gas flows; a three-way catalyst (TWC) mounted on the exhaust pipe and purifying HC, CO, and NOx contained in the exhaust gas, an ammonia production catalyst (APC) mounted on the exhaust pipe at a downstream of the TWC, storing NOx at a lean air/fuel ratio, and generating H2, releasing the stored NOx, and generating NH3 using the released NOx and the generated H2 at a rich air/fuel ratio, and a selective catalytic reduction (SCR) catalyst mounted on the exhaust pipe at a downstream of the APC, storing the NH3 generated in the TWC and the APC, and reducing the NOx contained in the exhaust gas using the stored NH3.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, Chang Hwan Kim, ChangHo Jung
  • AFTER TREATMENT SYSTEM AND AFTER TREATMENT METHOD FOR LEAN-BURN ENGINE
    Publication number: 20200248608
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. In the after treatment method, a rich air/fuel ratio (AFR) is controlled in multiple phases in response to detecting that conversion to the rich AFR is desired.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Seung Jae Yi
  • CO CLEAN-UP CATALYST, AFTER TREATMENT SYSTEM AND AFTER TREATMENT METHOD
    Publication number: 20200248603
    Abstract: An after treatment method is disclosed. The after treatment method may include: operating an engine at a lean air/fuel ratio; calculating an amount of NH3 stored in an SCR catalyst; calculating an amount of NOx which will flow into the SCR catalyst; determining whether conversion to a rich air/fuel ratio is desired; calculating, when the conversion to the rich air/fuel ratio is desired, a rich duration for which the rich air/fuel ratio is maintained and a target air/fuel ratio; and operating the engine at the target air/fuel ratio for the rich duration.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, Chang Hwan Kim, ChangHo Jung
  • CO CLEAN-UP CATALYST, AFTER TREATMENT SYSTEM AND AFTER TREATMENT METHOD
    Publication number: 20200248604
    Abstract: An after treatment system is disclosed. The after treatment system may include a three-way catalyst (TWC), a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows. The CUC may include a zeolite in which Cu and Fe are ion-exchanged and CeO2 in which Pt is supported, wherein a weight ratio of the CeO2 to a total weight of the CUC is 30-70 wt % such that the CUC purifies NH3 at a lean air/fuel ratio and purifies NH3 during a delay time at a rich air/fuel ratio.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, Chang Hwan Kim, ChangHo Jung
  • AFTER TREATMENT SYSTEM AND AFTER TREATMENT METHOD FOR LEAN-BURN ENGINE
    Publication number: 20200248607
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. NH3 generation in the ammonia production catalyst module is changed according to a temperature and a temperature change rate of the SCR catalyst.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Applicants: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Nahm Roh Joo, ChangHo Jung, Chang Hwan Kim, Dohyung Kim
  • Organic light emitting diode
    Patent number: 10727430
    Abstract: An embodiment of the present invention discloses an organic light emitting diode comprising an organic layer consisting of one layer or more, which includes a transparent electrode, a reflective electrode provided facing the transparent elector, and a light emitting layer provided between the transparent electrode and the reflective electrode. Here, the light emitting layer includes two or more light emitting materials and is characterized in that the difference between the dipole moment value of one light emitting material and the dipole moment value of another light emitting material from among the light emitting materials is 1.5 Debye or more.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: July 28, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hwakyung Kim, Chang Hwan Kim, Minseung Chun, Seongmi Cho, Dongheon Kim, Wooyung Jung
  • After treatment system and after treatment method for lean-burn engine
    Patent number: 10697340
    Abstract: An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction catalyst, and a CO clean-up catalyst on an exhaust pipe through which an exhaust gas flows. In the after treatment method, the engine is operated sequentially at a stoichiometric air/fuel ratio (AFR) and a lean AFR prior to entering a rich AFR.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: June 30, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nahm Roh Joo, Chang Hwan Kim, ChangHo Jung, Chulho Yu
  • ACCELERATED OUTDOOR EXPOSURE TEST EQUIPMENT
    Publication number: 20200182775
    Abstract: Accelerated outdoor exposure test equipment is disclosed. In the accelerated outdoor exposure test equipment, a specimen is moved for an accelerated outdoor test or an artificial radiation source to irradiate artificial light is moved at sunrise or sunset. Accordingly, the specimen is exposed to natural light such as sunlight during daytime and exposed to artificial light during nighttime.
    Type: Application
    Filed: December 30, 2019
    Publication date: June 11, 2020
    Inventors: Chang Hwan Kim, Sun Woong Choi, Hyy Young Han