Patents by Inventor Sei Jin Oh

Sei Jin Oh 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: 10154945
    Abstract: According to one aspect of the present disclosure, there is provided a single paste type hydraulic dental filling composition. The single paste type hydraulic dental filling composition includes hydraulic cement, non-aqueous liquid having hygroscopic properties, and a radiopaque material.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: December 18, 2018
    Assignee: MARUCHI
    Inventors: Sung Wook Jang, Ho Nam Lim, Eui Seong Kim, Sei Jin Oh
  • Publication number: 20160361237
    Abstract: According to one aspect of the present disclosure, there is provided a single paste type hydraulic dental filling composition. The single paste type hydraulic dental filling composition includes hydraulic cement, non-aqueous liquid having hygroscopic properties, and a radiopaque material.
    Type: Application
    Filed: August 25, 2016
    Publication date: December 15, 2016
    Applicant: Maruchi
    Inventors: Sung Wook JANG, Ho Nam LIM, Eui Seong KIM, Sei Jin OH
  • Patent number: 8279370
    Abstract: An optical laminate film, a backlight unit, and a liquid crystal display module, the optical laminate film including a multilayer film composed of multiple layers including at least two polymers having different refractive indexes, the multilayer film transmitting only a light component vibrating in a direction parallel to one transmittance axis while reflecting other light components; an embossed diffusing film laminated on one side of the multilayer film, the embossed diffusing film having roughness on a surface thereof; and a microlens film laminated on another side of the multilayer film, the microlens film having microlenses arranged on a surface thereof.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: October 2, 2012
    Assignee: Cheil Industries, Inc.
    Inventors: Jin Woo Lee, Gyu Chan Cho, Sun Hong Park, Sei Jin Oh
  • Patent number: 8062730
    Abstract: A light diffusion film includes a thermoplastic resin, a surface of the light diffusion film has a roughness (Ra) of about 0.5 to about 3 ?m and a height distribution index (HDI) of about 3 to about 8 ?m, and the light diffusion film has a retardation of not more than about 25 nm.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: November 22, 2011
    Assignee: Cheil Industries, Inc.
    Inventors: Jin Woo Lee, Chang Gyu Im, Bang Duk Kim, Sun Hong Park, Sei Jin Oh
  • Publication number: 20110116014
    Abstract: An optical laminate film, a backlight unit, and a liquid crystal display module, the optical laminate film including a multilayer film composed of multiple layers including at least two polymers having different refractive indexes, the multilayer film transmitting only a light component vibrating in a direction parallel to one transmittance axis while reflecting other light components; an embossed diffusing film laminated on one side of the multilayer film, the embossed diffusing film having roughness on a surface thereof; and a microlens film laminated on another side of the multilayer film, the microlens film having microlenses arranged on a surface thereof.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 19, 2011
    Inventors: Jin Woo Lee, Gyu Chan Cho, Sun Hong Park, Sei Jin Oh
  • Publication number: 20100247891
    Abstract: Disclosed herein is a transfer belt for an image forming apparatus comprising (A) a base layer comprising a thermoplastic resin; and (B) a surface layer comprising a thermoplastic resin composite in which carbon nanotubes are dispersed, wherein the surface layer is laminated on one side of the base layer. The transfer belt for an image forming apparatus can have high surface electrical resistance, resistance homogeneity, homogeneous electrical conductivity, and good mechanical properties.
    Type: Application
    Filed: June 11, 2010
    Publication date: September 30, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young Kyu CHANG, Young Sil LEE, Sei Jin OH
  • Publication number: 20100151204
    Abstract: A light diffusion film includes a thermoplastic resin, wherein a surface of the light diffusion film has an embossed pattern thereon, and the surface of the light diffusion film having the embossed pattern has a surface roughness (Ra) of about 0.5 ?m to about 3 ?m and a height distribution index (HDI) of about 3 ?m to about 8 ?m.
    Type: Application
    Filed: March 1, 2010
    Publication date: June 17, 2010
    Inventors: Jin Woo Lee, Bang Duk Kim, Sei Jin Oh, Chang Gyu Im, Sun Ae Hwang
  • Publication number: 20090147499
    Abstract: A light diffusion film includes a thermoplastic resin, a surface of the light diffusion film has a roughness (Ra) of about 0.5 to about 3 ?m and a height distribution index (HDI) of about 3 to about 8 ?m, and the light diffusion film has a retardation of not more than about 25 nm.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 11, 2009
    Inventors: Jin Woo Lee, Chang Gyu Im, Bang Duk Kim, Sun Hong Park, Sei Jin Oh