Patents by Inventor Hee Seung CHANG

Hee Seung CHANG 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: 10886598
    Abstract: An antenna module includes: a coil part including an antenna wiring disposed on an insulating substrate; a first magnetic part disposed on a first surface of the insulating substrate; and a second magnetic part disposed on a second surface of the insulating substrate, wherein the first magnetic part and the second magnetic part overlap with each other on a center region of the antenna wiring.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 5, 2021
    Assignee: WITS Co., Ltd.
    Inventors: Hee Seung Kim, Ki Won Chang, Jae Sun Won, Chang Hee Lee, Hyo Jung Yoon
  • Patent number: 10580560
    Abstract: A coil module including a magnetic body having a first body portion extended in a first axial direction and a second body portion extended in a second axial direction different from the first axial direction; and a transmitting coil including a first coil wound around a portion of the first body portion and a second coil wound around a portion of the second body portion.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 3, 2020
    Assignee: WITS Co., Ltd.
    Inventors: Hee Seung Kim, Ki Won Chang, Chang Hee Lee, Jae Sun Won, Hyo Jung Yoon, Gie Hyoun Kweon
  • Patent number: 10522913
    Abstract: An antenna module includes a coil part including a second antenna wiring disposed in a spiral shape on an insulating substrate and a first antenna wiring disposed in an internal region of the second antenna wiring; and a magnetic part including a second magnetic part disposed on a second surface of the insulating substrate and a first magnetic part extending from the second magnetic part, penetrating through the internal region of the second antenna wiring, and disposed on a first surface of the insulating substrate.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: December 31, 2019
    Assignee: WITS Co., Ltd.
    Inventors: Jae Sun Won, Hee Seung Kim, Young Min Cheon, Gie Hyoun Kweon, Jae Hyuk Jang, Ki Won Chang, Chang Hee Lee, Hyo Jung Yoon, Young Seung Roh
  • Publication number: 20190242744
    Abstract: The present invention provides an online diagnostic/prognostic system, for a rotation device, which does not require a diagnostic apparatus to be transferred and enables easy transmission of waveform data to a remote site. To this end, the present invention comprises: a vibration sensor mounted on a rotation device; a data analyzing unit connected to the vibration sensor and for extracting valid data, which is required for the diagnosis of the rotation device, from data obtained from the vibration sensor; and a diagnostic/prognostic server for diagnosing for abnormalities in the rotation device by means of comparing the valid data and prestored data. Therefore, the present invention does not require an apparatus for measuring vibrations to be transferred and enables transmission of waveform data to a remote cite, thereby enabling more efficient diagnosis for a rotation device and preventing abnormalities in the rotation device.
    Type: Application
    Filed: August 29, 2017
    Publication date: August 8, 2019
    Inventors: Yang Seok Kim, Dae Woong KIM, Bum Nyun KIM, Ji In KIM, Nam Woo CHOI, Jae Hun SHIN, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Hee Seung CHANG, You Soo SHIN
  • Publication number: 20190195249
    Abstract: Method for diagnosing a pneumatic control valve by using a positioner model includes: establishing relational expression for outputting valve stem displacement according to control pressure, the relational expression including parameters for the characteristics of a positioner, an actuator, and a valve, determining initial parameter value by adjusting the values of the parameters until the difference between a measured value for a normal operation of the pneumatic control valve and output value obtained by the relational expression is smaller than predetermined error limit, determining diagnostic parameter value by adjusting the values of the parameters until the difference between a measured value for a diagnostic operation of the pneumatic control valve and an output value obtained by the relational expression is smaller than a predetermined error limit, and comparing the initial parameter value and the diagnostic parameter value so as to determine whether the pneumatic control valve has abnormality.
    Type: Application
    Filed: August 30, 2017
    Publication date: June 27, 2019
    Inventors: Yang Seok KIM, Dae Woong KIM, Bum Nyun KIM, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Ji In KIM, Nam Woo CHOI, Yong Hoon PARK, Hee Seung CHANG, You Soo SHIN
  • Patent number: 10332663
    Abstract: A coil module includes a substrate; a wireless charging coil formed in a substantially central portion of the substrate positioned on both surfaces of the substrate; and a first wireless communications coil which does not directly contact the wireless charging coil and is formed in the substantially central portion of the substrate on both surfaces of the substrate, wherein, in a region of the substrate in which the wireless charging coil and the first wireless communications coil are overlapped with each other, the wireless charging coil is formed on one surface of the region and the first wireless communications coil is formed on the other surface of the region, respectively.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 25, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyung Wook Cho, Si Hyung Kim, Sung Heum Park, Hee Seung Kim, Ki Won Chang, Jae Suk Sung, Chang Mok Han
  • Publication number: 20190188345
    Abstract: The present invention provides a method for diagnosing a rotation device by means of a rotor-bearing-foundation model, the method characterized by utilizing the characteristics of a simulation rotor system. To this end, the present invention comprises the steps of: simulating a rotation device as a rotor system; forming a mathematical model for the rotor system; estimating the state of the rotation device by means of the mathematical model and a vibration measurement value of the rotation device; and diagnosing for abnormalities in the rotation device from the changes in an estimated value. Therefore, since a rotation device is diagnosed for abnormalities by means of forming a mathematical model for a rotor system, the present invention enables more accurate diagnosis of the rotation device.
    Type: Application
    Filed: August 29, 2017
    Publication date: June 20, 2019
    Inventors: Yang Seok Kim, Dae Woong KIM, Bum Nyun KIM, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Ji In KIM, Nam Woo CHOI, Ji Soo RYU, Hee Seung CHANG, You Soo SHIN