Patents by Inventor Chang-gyu Kim

Chang-gyu 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).

  • Publication number: 20230244004
    Abstract: A transparent article is described herein that includes: a glass-ceramic substrate comprising first and second primary surfaces opposing one another and a crystallinity of at least 40% by weight; and an optical film structure disposed on the first primary surface. The optical film structure comprises a plurality of alternating high refractive index (RI) and low RI layers and a scratch-resistant layer. The article also exhibits an average photopic transmittance of greater than 80% and a maximum hardness of greater than 10 GPa, as measured by a Berkovich Hardness Test over an indentation depth range from about 100 nm to about 500 nm. The glass-ceramic substrate comprises an elastic modulus of greater than 85 GPa and a fracture toughness of greater than 0.8 MPa·?m. Further, the optical film structure exhibits a residual compressive stress of ? 700 MPa and an elastic modulus of ?140 GPa.
    Type: Application
    Filed: March 13, 2023
    Publication date: August 3, 2023
    Inventors: Jaymin Amin, Jason Thomas Harris, Shandon Dee Hart, Chang-gyu Kim, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Dong-gun Moon, Jeonghong Oh, James Joseph Price, Charlene Marie Smith, Ananthanarayanan Subramanian, Ljerka Ukrainczyk, Tingge Xu
  • Publication number: 20230002884
    Abstract: A system is described herein for film deposition includes a drum; a motor configured to rotate the drum in a direction of rotation; a target including a target material; and a holder attached to the drum. The holder is configured to accommodate a substrate and to expose the substrate to free particles of the target material sputtered from the target, and the holder has an asymmetric shape.
    Type: Application
    Filed: November 19, 2020
    Publication date: January 5, 2023
    Inventors: Chang-gyu Kim, Jeonghong Oh, Jung-Hun Yun
  • Publication number: 20220317340
    Abstract: A transparent article is described herein that includes: a glass-ceramic substrate comprising first and second primary surfaces opposing one another and a crystallinity of at least 40% by weight; and an optical film structure disposed on the first primary surface. The optical film structure comprises a plurality of alternating high refractive index (RI) and low RI layers and a scratch-resistant layer. The article also exhibits an average photopic transmittance of greater than 80% and a maximum hardness of greater than 10 GPa, as measured by a Berkovich Hardness Test over an indentation depth range from about 100 nm to about 500 nm. The glass-ceramic substrate comprises an elastic modulus of greater than 85 GPa and a fracture toughness of greater than 0.8 MPa·?m. Further, the optical film structure exhibits a residual compressive stress of ?700 MPa and an elastic modulus of ?140 GPa.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Jaymin Amin, Jason Thomas Harris, Shandon Dee Hart, Chang-gyu Kim, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Dong-gun Moon, Jeonghong Oh, James Joseph Price, Charlene Marie Smith, Ljerka Ukrainczyk, Tingge Xu
  • Publication number: 20220221617
    Abstract: An optical element including an optically transparent lens which defines a curved surface having a steepness given by an R/# of from about 0.5 to about 1.0. A film is positioned on the curved surface. The film includes an index layer. A composite layer is positioned on the curved surface having a refractive index greater than the index layer. The composite layer includes HfO2 and Al2O3. The composite layer has a mole fraction X of HfO2, wherein X is from about 0.05 to about 0.95 and a mole fraction of Al2O3 in the composite layer is 1?X.
    Type: Application
    Filed: April 1, 2022
    Publication date: July 14, 2022
    Inventors: Ming-Huang Huang, Chang-gyu Kim, Hoon Kim, Soo Ho Park, Jue Wang
  • Patent number: 11320568
    Abstract: An optical element including an optically transparent lens which defines a curved surface having a steepness given by an R/# of from about 0.5 to about 1.0. A film is positioned on the curved surface. The film includes an index layer. A composite layer is positioned on the curved surface having a refractive index greater than the index layer. The composite layer includes HfO2 and Al2O3. The composite layer has a mole fraction X of HfO2, wherein X is from about 0.05 to about 0.95 and a mole fraction of Al2O3 in the composite layer is 1?X.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: May 3, 2022
    Assignee: Corning Incorporated
    Inventors: Ming-Huang Huang, Chang-gyu Kim, Hoon Kim, Soo Ho Park, Jue Wang
  • Publication number: 20200158916
    Abstract: An optical film structure that includes: an optical film comprising a physical thickness from about 50 nm to about 3000 nm, and a silicon-containing nitride or a silicon-containing oxynitride. The optical film exhibits a maximum hardness of greater than 18 GPa, as measured by a Berkovich Indenter Hardness Test over an indentation depth range from about 100 nm to about 500 nm on a hardness stack comprising a test optical film with a physical thickness of about 2 microns disposed on an inorganic oxide test substrate, the test optical film having the same composition as the optical film. Further, the optical film exhibits an optical extinction coefficient (k) of less than 1×10?2 at a wavelength of 400 nm and a refractive index (n) of greater than 1.8 at a wavelength of 550 nm.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Inventors: Shandon Dee Hart, Chang-gyu Kim, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Dong-gun Moon, Jung-keun Oh, Charles Andrew Paulson, James Joseph Price
  • Patent number: 10578777
    Abstract: According to one or more embodiments disclosed herein, a coated article may include a substrate and an optical coating. The optical coating may be disposed on a major surface of the substrate and may form an air-side surface. The optical coating may include an optical stack, an adhesion coating, and an easy-to-clean coating. The adhesion coating may comprise an alumina layer and a silica layer. The present disclosure is also directed to methods for depositing optical coatings on substrates and to consumer electronic products which include the coated articles.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: March 3, 2020
    Assignee: Corning Incorporated
    Inventors: Robert Alan Bellman, Chang-gyu Kim, Eric Louis Null, Jung-keun Oh, Sang-Yoon Oh, Jin-ah Yoo
  • Publication number: 20190346590
    Abstract: An optical element including an optically transparent lens which defines a curved surface having a steepness given by an R/# of from about 0.5 to about 1.0. A film is positioned on the curved surface. The film includes an index layer. A composite layer is positioned on the curved surface having a refractive index greater than the index layer. The composite layer includes HfO2 and Al2O3. The composite layer has a mole fraction X of HfO2, wherein X is from about 0.05 to about 0.95 and a mole fraction of Al2O3 in the composite layer is 1-X.
    Type: Application
    Filed: May 2, 2019
    Publication date: November 14, 2019
    Inventors: Ming-Huang Huang, Chang-gyu Kim, Hoon Kim, Soo Ho Park, Jue Wang
  • Publication number: 20180372920
    Abstract: According to one or more embodiments disclosed herein, a coated article may include a substrate and an optical coating. The optical coating may be disposed on a major surface of the substrate and may form an air-side surface. The optical coating may include an optical stack, an adhesion coating, and an easy-to-clean coating. The adhesion coating may comprise an alumina layer and a silica layer. The present disclosure is also directed to methods for depositing optical coatings on substrates and to consumer electronic products which include the coated articles.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 27, 2018
    Inventors: Robert Alan Bellman, Chang-gyu Kim, Eric Louis Null, Jung-keun Oh, Sang Oh, Jin-ah Yoo
  • Patent number: 9442313
    Abstract: A thermochromic window, the sunlight transmittance of which is adjustable depending on temperature, and a method of fabricating the same. The thermochromic window includes a substrate, a plurality of nanodots formed on the substrate, and a thermochromic thin film coating the substrate and the nanodots. The thermochromic thin film is made of a thermochromic material. The thickness of the thermochromic thin film disposed on the substrate is smaller than the thickness of the thermochromic thin film disposed on the nanodots.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG CORNING PRECISION MATERIALS CO., LTD.
    Inventors: Yongwon Choi, Yung-Jin Jung, Chang Gyu Kim, Hyun Bin Kim
  • Publication number: 20150332802
    Abstract: Disclosed is a polyamide resin composition, which includes a polyamide resin and 5˜100 parts by weight of a polypropylene resin, 10˜135 parts by weight of glass fiber, and 0.1˜8 parts by weight of a phenolic heat-resistance agent, based on 100 parts by weight of the polyamide resin, and which also has low ion release, few changes in properties even when being exposed to external environment of high or low temperature, and high productivity, thus making it easy to serve as a material for a humidifier for a fuel cell membrane for vehicles.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 19, 2015
    Applicant: KOLON PLASTICS, INC.
    Inventors: Heon Kyu JEONG, Chang Gyu KIM
  • Patent number: 9146408
    Abstract: A thermochromic window that can effectively insulate heat when warming is conducted in winter. The thermochromic window that includes a substrate, a thermochromic thin film formed on the substrate, and a transparent conductive film formed on at least one surface of the upper surface and the undersurface of the thermochromic thin film. The emissivity of the transparent conductive film is lower than the emissivity of the thermochromic thin film.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: September 29, 2015
    Assignee: Corning Precision Materials Co., Ltd.
    Inventors: Seulgi Bae, Sang-Ryoun Ryu, Chang Gyu Kim, Hyun Bin Kim, Dong-Gun Moon, Young Soo Jung, Yung-Jin Jung, Jee Yun Cha, Yong Won Choi
  • Publication number: 20140333984
    Abstract: A thermochromic window, the sunlight transmittance of which is adjustable depending on temperature, and a method of fabricating the same. The thermochromic window includes a substrate, a plurality of nanodots formed on the substrate, and a thermochromic thin film coating the substrate and the nanodots. The thermochromic thin film is made of a thermochromic material. The thickness of the thermochromic thin film disposed on the substrate is smaller than the thickness of the thermochromic thin film disposed on the nanodots.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 13, 2014
    Applicant: SAMSUNG CORNING PRECISION MATERIALS CO., LTD.
    Inventors: Yongwon CHOI, Yung-Jin JUNG, Chang Gyu KIM, Hyun Bin KIM
  • Publication number: 20140228492
    Abstract: Disclosed is a polyamide resin composition for a wheel cover, which has an excellent balance between rigidity and toughness, improved low temperature impact property, excellent heat resistance, and improved strength of the surface of the composition and the weld. In particular, the polyamide resin composition comprises a polyamide 6 resin, an ethylene-based copolymer, a styrene-based copolymer, a maleic anhydride grafted styrene, an imide-based copolymer, nano-minerals, and a phenolic heat-resistant material.
    Type: Application
    Filed: July 8, 2013
    Publication date: August 14, 2014
    Inventors: Duck-Hyoung Hwang, Yong-Chul Lee, Sung-Woo Lee, Chang-Gyu Kim, Ji-Hyuk Park
  • Publication number: 20130335803
    Abstract: A thermochromic window that can effectively insulate heat when warming is conducted in winter. The thermochromic window that includes a substrate, a thermochromic thin film formed on the substrate, and a transparent conductive film formed on at least one surface of the upper surface and the undersurface of the thermochromic thin film. The emissivity of the transparent conductive film is lower than the emissivity of the thermochromic thin film.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Inventors: Seulgi Bae, Sang-Ryoun Ryu, Chang Gyu Kim, Hyun Bin Kim, Dong-Gun Moon, Young Soo Jung, Yung-Jin Jung, Jee Yun Cha, Yong Won Choi
  • Patent number: 7857986
    Abstract: A chemical mechanical polishing (CMP) slurry and a chemical mechanical polishing (CMP) apparatus and method reduce defects, such as scratches, while maintaining a high polishing rate of a target film to be polished through a CMP process. The CMP slurry includes a ceria-based abrasive having a concentration of 0.001-10 percent by weight and a silica-based abrasive having a concentration of 1-24 percent by weight.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: December 28, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Suk Jung Ma, Ju Young Lee, Chang Gyu Kim
  • Publication number: 20090151371
    Abstract: The present invention relates to a compressor (5) and a refrigerator with the same, and more particularly, to a power saving type compressor which can prevent unnecessary consumption of a current for the compressor to have high energy efficiency, and a refrigerator with the same and a method for controlling the same, wherein the power saving type compressor includes a main winding and a sub-winding respectively having a main terminal (R) and a sub-terminal(s) main winding and a sub-winding being connected with a common terminal to each other, and a PTC switching unit between a PTC unit connected to the sub-terminal for increasing a starting torque in operation of the compressor and the main terminal, for making selective switching on/off of a power input to the PTC unit.
    Type: Application
    Filed: September 6, 2006
    Publication date: June 18, 2009
    Applicant: LG Electronics Inc.
    Inventors: Sang Joon Eum, Yun Hi Lee, Yeon Woo Kim, Seoung Min Kang, Jea Young Choi, Jeong Ho Lee, Bum Dong Sa, Chang Gyu Kim, Jae Hun Lee
  • Publication number: 20080160880
    Abstract: A chemical mechanical polishing (CMP) slurry and a chemical mechanical polishing (CMP) apparatus and method reduce defects, such as scratches, while maintaining a high polishing rate of a target film to be polished through a CMP process. The CMP slurry includes a ceria-based abrasive having a concentration of 0.001-10 percent by weight and a silica-based abrasive having a concentration of 1-24 percent by weight.
    Type: Application
    Filed: June 7, 2007
    Publication date: July 3, 2008
    Applicant: Hynix Semiconductor Inc.
    Inventors: Suk Jung Ma, Ju Young Lee, Chang Gyu Kim
  • Patent number: 7186655
    Abstract: The disclosure relates to a method for manufacturing a semiconductor device by performing a planarization process including a first CMP process using a slurry including 0.05˜0.5 wt % CeO2 or MnO2 as an abrasive and a second CMP process using a slurry including SiO2 as the other abrasive regardless of order of the processes.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: March 6, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Chang Gyu Kim, Chi Hong Kim, Hi Soon Kang, Tae Won Lee, Kwang Suk Park
  • Publication number: 20050016686
    Abstract: Disclosed is apparatus and method for fabricating semiconductor devices, in particular comprising a wafer chuck for holding a semiconductor wafer on which a predetermined thin layer is deposited; a processing chamber for injecting etching gas toward the wafer to form a predetermined pattern; and a clamp or a shadow ring provided on an edge of the wafer being held by the wafer chuck and preventing the edge from being etched, and thereby forming a protective step around the edge. Therefore, during a subsequent CMP process, the pattern adjacent to the edge of the wafer can be prevented from being over-polished, and reliability as well as productivity of the semiconductor devices can be improved.
    Type: Application
    Filed: August 18, 2004
    Publication date: January 27, 2005
    Inventors: Chang Gyu Kim, Wan Shick Kim