Patents by Inventor Dong Il Chang

Dong Il 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: 9879226
    Abstract: Disclosed is a basic culture medium for mesenchymal stem cells, and a cell therapeutic agent cultured and differentiated using same. The basic culture medium reduces the time taken from collection to mass culturing by increasing the proliferation rate of undifferentiated mesenchymal stem cells derived from an adult tissue such as human marrow and adipose tissue, and also is capable of various differentiations into treating agents for bone-forming cells, for cartilage cells, or for fat cells.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: January 30, 2018
    Assignee: SEWON CELLONTECH CO., LTD.
    Inventors: Dong-Sam Suh, Jun Keun Lee, Dong Il Chang, Min Jung Choi, Jang Hoon Kim, Ga Ram Kim, Cheong Ho Chang
  • Patent number: 9347507
    Abstract: Disclosed herein are an electronic parking brake (EPB) system and a method of controlling the same. The EPB system including an EPB actuator which has a motor and provides disc brakes provided in wheels with parking brake power includes a parking switch configured to be turned on or off by a driver, a current detector configured to detect a motor current flowing through the motor of the EPB actuator, a motor driving unit configured to drive the motor of the EPB actuator, and an electronic control unit which applies a parking brake in which the motor of the EPB actuator is rotated by the motor driving unit in one direction to provide the disc brakes with the parking brake power when the parking switch is turned on, calculates an impedance of the motor when a motor current value detected by the current detector is higher than a preset value while applying the parking brake, and determines whether a motor stuck failure occurs based on the calculated impedance of the motor.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: May 24, 2016
    Assignee: MANDO CORPORATION
    Inventors: Jin Yeong Choe, Dong-Il Chang
  • Publication number: 20150369317
    Abstract: Disclosed herein are an electronic parking brake (EPB) system and a method of controlling the same. The EPB system including an EPB actuator which has a motor and provides disc brakes provided in wheels with parking brake power includes a parking switch configured to be turned on or off by a driver, a current detector configured to detect a motor current flowing through the motor of the EPB actuator, a motor driving unit configured to drive the motor of the EPB actuator, and an electronic control unit which applies a parking brake in which the motor of the EPB actuator is rotated by the motor driving unit in one direction to provide the disc brakes with the parking brake power when the parking switch is turned on, calculates an impedance of the motor when a motor current value detected by the current detector is higher than a preset value while applying the parking brake, and determines whether a motor stuck failure occurs based on the calculated impedance of the motor.
    Type: Application
    Filed: June 19, 2015
    Publication date: December 24, 2015
    Inventors: Jin Yeong CHOE, Dong-Il CHANG
  • Publication number: 20140370600
    Abstract: Disclosed is a basic culture medium for mesenchymal stem cells, and a cell therapeutic agent cultured and differentiated using same. The basic culture medium reduces the time taken from collection to mass culturing by increasing the proliferation rate of undifferentiated mesenchymal stem cells derived from an adult tissue such as human marrow and adipose tissue, and also is capable of various differentiations into treating agents for bone-forming cells, for cartilage cells, or for fat cells.
    Type: Application
    Filed: September 6, 2011
    Publication date: December 18, 2014
    Applicant: SEWON CELLONTECH CO., LTD.
    Inventors: Dong-Sam Suh, Jun Keun Lee, Dong Il Chang, Min Jung Choi, Jang Hoon Kim, Ga Ram Kim, Cheong Ho Chang
  • Patent number: 8116753
    Abstract: A mobile terminal and a method for playing at least one multimedia object are disclosed. The method for playing multimedia objects comprises synchronizing at least one attribute value of the at least one multimedia object with an attribute value of a multimedia player module provided in the mobile terminal; and playing the at least one multimedia object in accordance with the synchronized at least one attribute value using the multimedia player module.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: February 14, 2012
    Assignee: LG Electronics Inc.
    Inventors: Jong Hwan Kim, Dong Il Chang, Deung Ku Kang
  • Publication number: 20100056115
    Abstract: A mobile terminal and a method for playing at least one multimedia object are disclosed. The method for playing multimedia objects comprises synchronizing at least one attribute value of the at least one multimedia object with an attribute value of a multimedia player module provided in the mobile terminal; and playing the at least one multimedia object in accordance with the synchronized at least one attribute value using the multimedia player module.
    Type: Application
    Filed: June 8, 2009
    Publication date: March 4, 2010
    Inventors: Jong Hwan Kim, Dong Il Chang, Deung Ku Kang
  • Publication number: 20090126285
    Abstract: A facility module is provided for producing and storing a cell therapy product comprising: a Cell Therapy (CT) module one including separately prefabricated units having specific functions and separate entrances and exits so as to minimize contamination, and being capable of producing the cell therapy product, and a Banking of Cell and Tissue (BC) module Two including prefabricated units having specific functions and separate entrances and exits so as to minimize contamination, and being capable of appropriately storing hematopoietic stem cells, bone marrow cells and other cells for a prolonged period. It enables easy and low cost production of the cell therapy product, with sufficient quality to be transplanted into patients, within a short period, and permits clinical application to patients expeditiously.
    Type: Application
    Filed: March 16, 2006
    Publication date: May 21, 2009
    Inventors: Dong-Sam Suh, Chang-Kwon Ko, Seung-Ju Ryu, Sung-Jun Koh, Eun-Young Lee, Soo-Jin Jung, Dong-il Chang, Jun-Keun Lee, Hyun-Gi Yoon, Hyang-Soon Chang, Yong-Hyun Yoo, Jin-Wook Chung, Cheong-Ho Chang
  • Patent number: D1043228
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: September 24, 2024
    Assignees: DAEJIN ENTERPRISE CORPORATION, TIGER COMPANY LTD.
    Inventor: Dong Il Chang