Patents by Inventor Jung-hyuck Cho

Jung-hyuck Cho 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: 10881111
    Abstract: The present invention provides a composition of long-term constant-concentration aqueous chlorine dioxide solution including dissolved chlorine dioxide, a decomposition inhibitor for dissolved chlorine dioxide, and a pH modifier, and a method for preparing the same.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: January 5, 2021
    Assignees: NEOCL Co., Ltd.
    Inventors: Yong Jun Kim, Jung Hyuck Cho
  • Patent number: 9383501
    Abstract: A scanner module and an image scanning apparatus employing the same include a light source to generate light, a light guide member to guide the light toward an object, a sensor configured to detect the light reflected by the object, at least one reflecting mirror to reflect the light reflected by the object to the sensor, and a focusing lens to focus the reflected light redirected by the at least one reflecting mirror on the sensor. The light guiding member includes an incident surface to receive the light, a reflective surface to reflect the light received through the incident surface, a plurality of guide surfaces to guide the light received through the incident surface, and an exit surface to allow light reflected by the reflective surface to exit. An interval between reflective linear elements increases from a center of the light guide member towards the incident surface.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung Rok Kim, Jung Hyuck Cho
  • Patent number: 8168797
    Abstract: Novel oxazolidinone derivatives with a difluorophenyl moiety, represented by Chemical Formula 1, pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition containing the same as an active ingredient are provided. Exhibiting potent inhibitory activity against Gram-positive bacteria including Haemophilus influenza and Coagulase negative staphylococci and resistant bacteria including vancomycin-resistant enterococci (VRE), the pharmaceutical composition is useful as an antibiotic (wherein, R is as defined in the specification).
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 1, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Chang Hyun Oh, Jung Hyuck Cho
  • Publication number: 20110157661
    Abstract: Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object such that the light source is installed on the light guide member. The light guide member has a reflective surface for reflecting the light generated from the light source, an exit surface for radiating the light, which is reflected from the reflective surface, toward the object, and a plurality of guide surfaces that guide the light toward the exit surface by totally reflecting the light when a traveling direction of the light reflected from the reflective surface deviates from the exit surface.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 30, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kyung Rok KIM, Jung Hyuck Cho
  • Patent number: 7924478
    Abstract: Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object to be scanned. The light guide member has a reflective surface for reflecting the light generated from the light source, an exit surface for radiating the light, which is reflected from the reflective surface, toward the object, and a plurality of guide surfaces each guiding the light toward the exit surface by reflecting the light reflected from the reflective surface deviates from the exit surface. The light is effectively guided to be output from the exit surface without substantial light loss.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: April 12, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung Rok Kim, Jung Hyuck Cho
  • Patent number: 7852523
    Abstract: Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object. The light guide member has a reflective surface defined by a plurality of reflective grooves, some of which arranged to be non-parallel with other ones. Light is effectively diffused and/or scattered in the width direction of the light guide member by the reflective grooves, allowing a uniform light distribution across the scanning width.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: December 14, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Hyuck Cho, Kyung Rok Kim
  • Publication number: 20100069449
    Abstract: Novel oxazolidinone derivatives with a difluorophenyl moiety, represented by Chemical Formula 1, pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition containing the same as an active ingredient are provided. Exhibiting potent inhibitory activity against Gram-positive bacteria including Haemophilus influenza and Coagulase negative staphylococci and resistant bacteria including vancomycin-resistant enterococci (VRE), the pharmaceutical composition is useful as an antibiotic.
    Type: Application
    Filed: November 25, 2008
    Publication date: March 18, 2010
    Applicant: Korea Institute of Science & Technology
    Inventors: Chang Hyun Oh, Jung Hyuck Cho
  • Publication number: 20100063117
    Abstract: Novel oxazolidinone derivatives with a difluorophenyl moiety, represented by Chemical Formula 1, pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition containing the same as an active ingredient are provided. Exhibiting potent inhibitory activity against Gram-positive bacteria including Haemophilus influenza and Coagulase negative staphylococci and resistant bacteria including vancomycin-resistant enterococci (VRE), the pharmaceutical composition is useful as an antibiotic.
    Type: Application
    Filed: November 20, 2008
    Publication date: March 11, 2010
    Applicant: Korea Institute of Science & Technology
    Inventors: Chang Hyun Oh, Jung Hyuck Cho
  • Publication number: 20090015886
    Abstract: Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object to be scanned. The light guide member has a reflective surface for reflecting the light generated from the light source, an exit surface for radiating the light, which is reflected from the reflective surface, toward the object, and a plurality of guide surfaces each guiding the light toward the exit surface by reflecting the light reflected from the reflective surface deviates from the exit surface. The light is effectively guided to be output from the exit surface without substantial light loss.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 15, 2009
    Inventors: Kyung Rok Kim, Jung Hyuck Cho
  • Publication number: 20090015884
    Abstract: Disclosed are a scanner module and an image scanning apparatus employing the same. The scanner module includes a light source generating light to be irradiated onto an object and a light guide member extending in correspondence with a width of the object. The light guide member has a reflective surface defined by a plurality of reflective grooves, some of which arranged to be non-parallel with other ones. Light is effectively diffused and/or scattered in the width direction of the light guide member by the reflective grooves, allowing a uniform light distribution across the scanning width.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 15, 2009
    Inventors: Jung Hyuck CHO, Kyung Rok Kim
  • Publication number: 20070058233
    Abstract: A light scanning unit includes a light source, a collimating unit for collimating light emitted from the light source, and a rotatory polygonal mirror for deflecting light radiated from the collimating unit. One sheet of an f-theta lens scans the light deflected by the rotatory polygonal mirror to a plane at a substantially uniform velocity to form an image on the plane and to correct a field curvature aberration in a main scanning direction. The f-theta lens may be a meniscus lens having a convex surface directed toward a deflection plane. A curvature of the f-theta lens in the main scanning direction differs from a curvature in a sub scanning direction. The f-theta lens has an aspherical shape in which a curvature in the sub scanning direction is varied continuously. A ratio of the radius of curvature of a first surface to the radius of curvature of a second surface at an optical axis is approximately at least 1.7.
    Type: Application
    Filed: March 24, 2006
    Publication date: March 15, 2007
    Inventors: Hyung-soo Kim, Gi-sung Park, Kyung-nam Jang, Jung-hyuck Cho
  • Publication number: 20060208177
    Abstract: A device to prevent diffused reflection of light in a light scanning unit includes a light source to generate and irradiate light, a housing in which the light source is installed and which has an opening through which the light irradiated by the light source passes, a collimator lens separated from the light source by a predetermined distance and condensing the light that has passed through the opening, and a holder in which the collimator lens is installed, and where an uneven portion is formed on an inner surface of the opening or the holder to prevent the diffused reflection of the light. Light is prevented from being diffusely reflected from the inner surface of the opening or the holder such that the quality of an image being formed is not degraded by diffused reflection.
    Type: Application
    Filed: February 23, 2006
    Publication date: September 21, 2006
    Inventor: Jung-hyuck Cho
  • Patent number: 7092136
    Abstract: A laser scanning unit includes a light source unit generating a plurality of laser beams, at least one horizontal polarizer arranged on an optical axis of a part of the laser beams, at least one vertical polarizer arranged on an optical axis of a remainder of the laser beams, a polygon mirror deflecting, within a range of a predetermined angle, a horizontally-polarized beam and a vertically-polarized beam respectively generated by the horizontal and the vertical polarizers, and an optical filter passing a horizontally-polarized beam of the plurality of polarized beams deflected by the polygon mirror, and reflecting a vertically-polarized beam at a predetermined angle.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: August 15, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jung-hyuck Cho
  • Publication number: 20050024478
    Abstract: A laser scanning unit includes a light source unit generating a plurality of laser beams, at least one horizontal polarizer arranged on an optical axis of a part of the laser beams, at least one vertical polarizer arranged on an optical axis of a remainder of the laser beams, a polygon mirror deflecting, within a range of a predetermined angle, a horizontally-polarized beam and a vertically-polarized beam respectively generated by the horizontal and the vertical polarizers, and an optical filter passing a horizontally-polarized beam of the plurality of polarized beams deflected by the polygon mirror, and reflecting a vertically-polarized beam at a predetermined angle.
    Type: Application
    Filed: April 20, 2004
    Publication date: February 3, 2005
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jung-hyuck Cho