Patents by Inventor Wook Chang

Wook 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).

  • Publication number: 20230416684
    Abstract: A cell death inhibitor including a mesenchymal stem cell genetically engineered to secrete growth-regulated oncogene-alpha (GRO-?) or overexpress GRO-? compared to a parent cell, GRO-?, or a combination thereof. A method of treating a muscle disease, including administering a pharmaceutically effective amount of a mesenchymal stem cell, which is genetically engineered to secrete growth-regulated oncogene-alpha (GRO-?) or overexpress GRO-? compared to a parent cell, or GRO-?, to a subject in need thereof.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 28, 2023
    Applicants: SAMSUNG LIFE PUBLIC WELFARE FOUNDATION, ENCELL CO., LTD.
    Inventors: Jong Wook CHANG, Hong Bae JEON, Sang Eon PARK, Soojin KWON
  • Patent number: 11851189
    Abstract: A hybrid air mobility system is capable of flying a long distance through effective operation of an engine and batteries. The hybrid air mobility system includes a fuselage configured to supply power to a propeller and electric equipment, the fuselage being provided with a duct including an inlet and an outlet so as to circulate air to the engine and the electric equipment; a deflector rotatably installed at the outlet of the duct so as to convert a discharge direction of exhaust gas generated by the engine and cooling air after cooling the electric equipment; and a controller configured to determine whether or not the engine is driven and to control a rotated position of the deflector depending on an amount of driving of the engine so as to selectively adjust movement of the exhaust gas and the cooling air towards the propeller.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: December 26, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Woo Suk Jung, Sang Hyun Jung, Byung Wook Chang, Keun Seok Lee, Hee Kwang Lee
  • Publication number: 20230398160
    Abstract: The present invention relates to a composition comprising or consisting of two or more bacteria strains, formulated for the prophylaxis or treatment of intestinal barrier dysfunction and/or heat stress in a subject. More particularly, the composition comprises two or more of Lactobacillus reuteri MM2-3, Lactobacillus plantarum WCSF1, Streptococcus thermophilus B of R and Escherichia coli Nissle 1917. The present invention also includes uses of the invention to treat conditions such as inflammatory bowel disease (IBD) and heat stress.
    Type: Application
    Filed: October 30, 2020
    Publication date: December 14, 2023
    Applicant: National University of Singapore
    Inventors: Matthew Wook Chang, Koon Jiew Chua, Hua Ling, In Young Hwang
  • Publication number: 20230381409
    Abstract: The present disclosure provides a pump including a housing having a shaft hole, a membrane assembly disposed inside the housing, and a shaft assembly mounted on the housing. The shaft assembly includes a shaft inserted into the shaft hole, and a sealing member disposed on an end portion of the shaft and having a plurality of contact regions on an inner surface of the housing along a longitudinal direction of the shaft.
    Type: Application
    Filed: August 11, 2023
    Publication date: November 30, 2023
    Applicant: EOFLOW CO., LTD.
    Inventors: Do Kyung LEE, Joon Sung Jeon, Young Wook Chang
  • Patent number: 11812632
    Abstract: A display device includes a base, a light emitting element disposed on the base, a capping layer disposed on the light emitting element, a thin-film encapsulation layer which is disposed on the capping layer and includes an inorganic layer at the bottom, and a wavelength conversion pattern which is disposed on the thin-film encapsulation layer and overlaps the light emitting element. The capping layer includes a first sub-capping layer disposed on the light emitting element and a second sub-capping layer disposed between the first sub-capping layer and the inorganic layer, and a refractive index of the second sub-capping layer is greater than a refractive index of the inorganic layer and smaller than a refractive index of the first sub-capping layer.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: November 7, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Je Hong Choi, Jin Woo Park, Sung Ho Seo, Seung Wook Chang, Sang Woo Pyo
  • Publication number: 20230298530
    Abstract: A gate driver includes a plurality of gate stages. Each of the plurality of gate stages includes a carry generating circuit outputting a second carry signal having a phase which is later than a phase of a first carry signal, on the basis of a first clock signal and a second clock signal having different phases and a scan generating circuit outputting a scan signal having a phase which differs from phases of the first and second carry signals, on the basis of the first clock signal, the second clock signal, and the first carry signal. Each of the first clock signal, the second clock signal, the first carry signal, and the second carry signal may be a P-type pulse, and the scan signal may be an N-type pulse.
    Type: Application
    Filed: May 22, 2023
    Publication date: September 21, 2023
    Inventor: Sung Wook Chang
  • Patent number: 11694629
    Abstract: A gate driver includes a plurality of gate stages. Each of the plurality of gate stages includes a carry generating circuit outputting a second carry signal having a phase which is later than a phase of a first carry signal, on the basis of a first clock signal and a second clock signal having different phases and a scan generating circuit outputting a scan signal having a phase which differs from phases of the first and second carry signals, on the basis of the first clock signal, the second clock signal, and the first carry signal. Each of the first clock signal, the second clock signal, the first carry signal, and the second carry signal may be a P-type pulse, and the scan signal may be an N-type pulse.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: July 4, 2023
    Assignee: LG Display Co., Lid.
    Inventor: Sung Wook Chang
  • Publication number: 20230176698
    Abstract: The present disclosure provides a display device having a touch sensor for reducing the size of a bezel area. The display device having a touch sensor is configured such that touch electrodes and touch lines are disposed in a mesh shape on an encapsulation layer encapsulating light-emitting elements and such that some of the touch lines are connected to a touch-driving circuit via an upper bezel area, thereby reducing the size of left and right bezel areas.
    Type: Application
    Filed: February 1, 2023
    Publication date: June 8, 2023
    Inventors: Eun-Min Jo, Sung-Wook Chang
  • Publication number: 20230159898
    Abstract: A method of culturing mesenchymal stem cells includes performing primary culture of umbilical cord-derived mesenchymal stem cells under hypoxic conditions with an oxygen partial pressure of 1 to 8% and pressure conditions of 1.0 to 8.0 PSI. The method of culturing umbilical cord-derived mesenchymal stem cells can maintain stemness by inhibiting the differentiation of stem cells and particularly can achieve a remarkably high proliferation rate.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 25, 2023
    Applicants: ENCELL CO., LTD., SAMSUNG LIFE PUBLIC WELFARE FOUNDATION
    Inventors: Jong Wook CHANG, Hong Bae JEON, Sang Eon PARK
  • Publication number: 20230146610
    Abstract: The present disclosure relates to a medium composition for enhancing proliferation of stem cells, comprising ethionamide, and a use thereof. It is possible, according to the present disclosure, to mass-produce highly-efficient next-generation stem cells through a simple and safe method of controlling a culturing environment, without using genetic modification or viral vectors, etc.
    Type: Application
    Filed: January 10, 2023
    Publication date: May 11, 2023
    Inventors: Duk Lyul NA, Jong Wook Chang, Hyo Jin Son, Su Hyeon Myeong
  • Publication number: 20230138160
    Abstract: Provided are a composition for ciliogenesis, containing a mesenchymal stem cell or a culture medium of mesenchymal stem cell. The mesenchymal stem cell or the culture medium of mesenchymal stem cell increases the number and promotes growth of primary cilia in cells. The mesenchymal stem cell or the culture medium of mesenchymal stem cell can be used as a pharmaceutical composition for preventing or treating diseases caused by ciliopathy or ciliary impairment. The mesenchymal stem cell or the culture medium of mesenchymal stem cell can be used as a cosmetic composition. A method for preventing or treating ciliopathy or ciliary impairment is disclosed.
    Type: Application
    Filed: March 23, 2021
    Publication date: May 4, 2023
    Applicants: ENCELL CO.,LTD., SAMSUNG LIFE PUBLIC WELFARE FOUNDATION.
    Inventors: Jong Wook CHANG, Hong Bae JEON, Sang Eon PARK
  • Publication number: 20230128867
    Abstract: Provided are a membrane-electrode assembly for an electroosmotic pump, the membrane-electrode assembly including a first electrode having a porous structure, containing a first electrochemical reactant, and having applied thereto a (+) or (?) voltage; a first membrane provided on one surface of the first electrode, having a porous structure, and having a (+) or (?) zeta potential; a second electrode provided on one surface of the first membrane opposite to a side of the first electrode, having a porous structure, containing a second electrochemical reactant, and having applied thereto a voltage having a polarity opposite to that of the voltage applied to the first electrode; a second membrane provided on one surface of the second electrode opposite to a side of the first membrane, having a porous structure, and having a zeta potential opposite to that of the zeta potential of the first membrane; and a third electrode provided on one surface of the second membrane opposite to a side of the second electrode, ha
    Type: Application
    Filed: March 12, 2021
    Publication date: April 27, 2023
    Inventors: Young Wook Chang, Jae Hong Kim, Yongchul Song
  • Publication number: 20230123501
    Abstract: The present invention relates to the metabolic engineering of a microbial host for the synthesis of value-added products from oil palm empty fruit brunches (OPEFBs). In one embodiment, the genetically engineered microorganism is Escherichia coli comprising a metabolic pathway consisting of 9 enzymes (11 genes) to utilize depolymerized lignin, namely vanillin, p-coumaric acid, p-hydroxybenzaldehyde, vanillic acid, p-hydroxybenzoic acid and ferulic acid, to produce ?-ketoadipic acid, which can be subsequently converted into commercially important derivatives such as adipic acid and levulinic acid. The enzymes are feruloyl-CoA synthetase (fcs), enoyl-CoA hydratase (ech), vanillin dehydrogenase (vdh), vanillate O-demethylase (vanA; vanA and vanB), p-hydroxy benzoate hydroxylase (pobA), protocatechuate 3,4-dioxygenase {pcaGH; pcaG and pcaH), 3-carboxy-cis, cis-muconate cycloisomerase (pcaB), 4-carboxymuconolactone decarboxylase (pcaC), and ?-ketoadipate enol-lactone hydrolase (pcaD).
    Type: Application
    Filed: March 5, 2021
    Publication date: April 20, 2023
    Applicant: National University of Singapore
    Inventors: Tat Ming Samuel Lo, In Young Hwang, Matthew Wook Chang, Han-Saem Cho
  • Publication number: 20230123431
    Abstract: The present invention provides for a method to increase the free lipoic acid production in an isolated genetically engineered bacteria or yeast cell. The method involves culturing in a cysteine supplemented culture medium the engineered bacteria or yeast that is transformed with a recombinant expression vector encoding polynucleotide molecules that results in the overexpression of the following genes that are linked to at least one promoter: (1) substrate protein (e.g. Gcv3p); (2) octanoyltransferase or lipoyl synthase; (3) cofactor S-adenosyl methionine synthase; and (4) lipoamidase. The invention also relates to the engineered bacteria or yeast cell thereof.
    Type: Application
    Filed: March 2, 2021
    Publication date: April 20, 2023
    Applicant: National University of Singapore
    Inventors: Matthew Wook Chang, Binbin Chen, Jee Loon Foo, Hua Ling
  • Publication number: 20230115453
    Abstract: Provided are an electroosmotic pump including a membrane; a first electrode disposed on a surface of the membrane and including a first porous support including a first conductor and a first precious metal and a first conductive polymer positioned in or on at least some of pores and surfaces of the first porous support; and a second electrode disposed on another surface of the membrane and including a second porous support including a second conductor and a second precious metal and a second conductive polymer positioned in or on at least some of pores and surfaces of the second porous support, a method of manufacturing the electroosmotic pump, and a fluid pumping system including the electroosmotic pump.
    Type: Application
    Filed: March 12, 2021
    Publication date: April 13, 2023
    Inventors: Young Wook Chang, Jae Hong Kim, Yongchul Song, Mihyun Lee
  • Patent number: 11625115
    Abstract: A touch display device for preventing the occurrence of a short circuit between routing lines is disclosed. The touch display device includes a dam forming a boundary with an encapsulation unit covering a light-emitting element, and the dam is formed such that the height thereof in a region that overlaps routing lines, which are connected to touch electrodes disposed on the encapsulation unit, and the height thereof in a region that does not overlap the routing lines are different from each other, thereby preventing the occurrence of a short circuit between the routing lines.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: April 11, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Neung-Hee Lee, Min-Su Kim, Sung-Wook Chang
  • Publication number: 20230077910
    Abstract: An electro-osmosis pump system includes an inlet line through which a fluid is introduced, an outlet line through which the fluid is discharged, a first pump disposed between the inlet line and the outlet line and including a first housing in which a first operation fluid is disposed, a second pump disposed in parallel to the first pump between the inlet line and the outlet line and including a second housing in which a second operation fluid disposed, and a power supply configured to supply voltages to the first pump and the second pump. The first pump includes a first membrane, a 1A-th electrode, and a 2A-th electrode, the second pump includes a second membrane, a 1B-th electrode, and a 2B-th electrode, and the power supply supplies the voltage to the 1A-th electrode and the 2A-th electrode, and supplies the voltage to the 1B-th electrode and the 2B-th electrode.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 16, 2023
    Applicant: EOFLOW CO., LTD.
    Inventors: Jae Hong KIM, Young Wook CHANG, Mihyun LEE
  • Publication number: 20230081894
    Abstract: The present invention relates to a pharmaceutical composition, for preventing or treating Charcot-Marie-Tooth disorder, comprising mesenchymal stem cells or insulin secreted by mesenchymal stem cells.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 16, 2023
    Inventors: Jong Wook CHANG, Hong Bae JEON, Sang Eon PARK, Shin Ji OH
  • Patent number: 11605677
    Abstract: A display device includes a first base member having a first light-emitting area, a second light-emitting area, and a non-light-emitting area between the first and second light-emitting areas; a second base member on the first base member; a first color filter on a first surface of the second base member that faces the first base member and overlapping with the first light-emitting area; a second color filter on the first surface of the second base member and overlapping with the second light-emitting area; a color pattern on the first surface of the second base member, between the first and second color filters, and overlapping with the non-light-emitting area; a light-shielding member on the color pattern and overlapping with the non-light-emitting area; and a first wavelength conversion pattern on the second color filter and including a first wavelength shifter.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: March 14, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Hee Lee, Hyun Shik Lee, Seung Wook Chang, Byoung Seong Jeong, Sang Woo Pyo, Jae Hoon Hwang, Ji Hwan Yoon
  • Patent number: 11592944
    Abstract: The present disclosure provides a display device having a touch sensor for reducing the size of a bezel area. The display device having a touch sensor is configured such that touch electrodes and touch lines are disposed in a mesh shape on an encapsulation layer encapsulating light-emitting elements and such that some of the touch lines are connected to a touch-driving circuit via an upper bezel area, thereby reducing the size of left and right bezel areas.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: February 28, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Eun-Min Jo, Sung-Wook Chang