Patents by Inventor Seung-eon Lee

Seung-eon Lee 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: 11396636
    Abstract: Proposed is a mineral lubricating base oil having improved low-temperature performance, in which the lubricating base oil has kinematic viscosity of 9.0 cSt or less (at 40° C.), kinematic viscosity of 2.5 cSt or less (at 100° C.), and a pour point of ?50° C. or less.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: July 26, 2022
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Seung Eon Lee, Hak Mook Kim, Jin Hee Ok, Kyung Seok Noh, Jun Soo Park, Yong Rae Cho
  • Patent number: 11225616
    Abstract: Disclosed is a method of producing a lubricating base oil, including providing a feedstock including a diesel fraction, subjecting the feedstock to catalytic dewaxing, and recovering a lubricating base oil from a product of the catalytic dewaxing. A lubricating base oil produced thereby and a lubricant product including the lubricating base oil are also provided.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 18, 2022
    Assignees: SK INNOVATION CO., LTD, SK LUBRICANTS CO., LTD.
    Inventors: Seung Eon Lee, Hak Mook Kim, Jin Hee Ok
  • Publication number: 20210403823
    Abstract: Proposed is a mineral lubricating base oil having improved low-temperature performance, in which the lubricating base oil has kinematic viscosity of 9.0 cSt or less (at 40° C.), kinematic viscosity of 2.5 cSt or less (at 100° C.), and a pour point of ?50° C. or less.
    Type: Application
    Filed: September 24, 2019
    Publication date: December 30, 2021
    Applicants: SK INNOVATION CO., LTD., SK LUBRICANTS CO., LTD.
    Inventors: Seung Eon LEE, Hak Mook KIM, Jin Hee OK, Kyung Seok NOH, Jun Soo PARK, Yong Rae CHO
  • Publication number: 20210087477
    Abstract: Disclosed is a method of producing a lubricating base oil, including providing a feedstock including a diesel fraction, subjecting the feedstock to catalytic dewaxing, and recovering a lubricating base oil from a product of the catalytic dewaxing. A lubricating base oil produced thereby and a lubricant product including the lubricating base oil are also provided.
    Type: Application
    Filed: July 6, 2020
    Publication date: March 25, 2021
    Inventors: Seung Eon LEE, Hak Mook KIM, Jin Hee OK
  • Patent number: 9382334
    Abstract: Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: July 5, 2016
    Assignee: SK Innovation Co., Ltd.
    Inventors: Myoung Lae Kim, Hyuk Jun Kim, Won Yeob Kim, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Publication number: 20150068427
    Abstract: Provided is an optical film used for the optical compensation, in which additives are added to thereby have a good stability at high temperature and high humidity, a higher chromaticity, a higher Haze and a higher moisture resistance, as well as a small thickness direction retardation (Rth).
    Type: Application
    Filed: May 7, 2013
    Publication date: March 12, 2015
    Inventors: Won Yeob Kim, Myoung Lae Kim, Hyuk Jun Kim, Yong Gyun Cho, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Publication number: 20150004333
    Abstract: Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.
    Type: Application
    Filed: January 4, 2013
    Publication date: January 1, 2015
    Inventors: Myoung Lae Kim, Hyuk Jun Kim, Won Yeob Kim, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Publication number: 20140311381
    Abstract: Provided is a cellulose acylate film for an optical film usable for optical compensation sheet, an optical filter for stereoscopic images, a polarizer and a liquid crystal display and the like.
    Type: Application
    Filed: March 7, 2014
    Publication date: October 23, 2014
    Applicant: SK Innovation Co., Ltd.
    Inventors: Hyo Shin Kwak, Min Joung Im, Seung Eon Lee, Tae Sug Jang, Myoung Lae Kim, Yong Gyun Cho, Won Yeob Kim, Min Sang Park
  • Publication number: 20140116292
    Abstract: The present invention relates to a cellulose acetate film used for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).
    Type: Application
    Filed: June 20, 2012
    Publication date: May 1, 2014
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Won Yeob Kim, Min Joung Im, Seung Eon Lee, Myoung Lae Kim, Yong Gyun Cho, Sang Yeup Lee, Ki Yup Kim
  • Publication number: 20140116293
    Abstract: The present invention relates to a cellulose acetate film for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).
    Type: Application
    Filed: June 20, 2012
    Publication date: May 1, 2014
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Won Yeob Kim, Min Joung Im, Seung Eon Lee, Hyo Shin Kwak, Myoung Lae Kim, Yong Gyun Cho
  • Patent number: 8659715
    Abstract: A liquid crystal display (LCD) apparatus is provided. The LCD apparatus includes a frame, a liquid crystal panel which is disposed inside the frame, at least one fluorescent lamp which is disposed inside the frame to project light toward the liquid crystal panel, a voltage supply printed circuit board (PCB) which supplies a driving voltage to the fluorescent lamp and includes a connection end and at least one connection terminal arranged on the connection end; and at least one fluorescent lamp connector to which the fluorescent lamp and the voltage supply PCB are connected and which includes a PCB insertion recess into which the connection end is inserted, and the PCB insertion recess has opposite sides which are open in a width direction of the fluorescent lamp connector.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: February 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-taek Lee, Dae-hyoun Byoun, Seung-eon Lee
  • Patent number: 7869227
    Abstract: A method of supplying a power to elements in a power supply apparatus including a primary side and a second side. Particularly, a method of supplying a driving power to an element at the primary side of the power supply apparatus from a primary coil of a transformer. A power factor improvement section improves a power factor of a received alternating current (AC) power. A transformer then receives the AC power having the improved power factor from a primary coil and generates an induced power at a secondary coil. The transformer then provides the AC power to drive a predetermined element located at the primary side of the power supply apparatus from the primary coil.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: January 11, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Seung-eon Lee, Kyoung-geun Lee, Jong-cheol Lee
  • Publication number: 20100253871
    Abstract: A liquid crystal display (LCD) apparatus is provided. The LCD apparatus includes a frame, a liquid crystal panel which is disposed inside the frame, at least one fluorescent lamp which is disposed inside the frame to project light toward the liquid crystal panel, a voltage supply printed circuit board (PCB) which supplies a driving voltage to the fluorescent lamp and includes a connection end and at least one connection terminal arranged on the connection end; and at least one fluorescent lamp connector to which the fluorescent lamp and the voltage supply PCB are connected and which includes a PCB insertion recess into which the connection end is inserted, and the PCB insertion recess has opposite sides which are open in a width direction of the fluorescent lamp connector.
    Type: Application
    Filed: November 20, 2009
    Publication date: October 7, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ju-taek LEE, Dae-hyoun BYOUN, Seung-eon LEE
  • Publication number: 20080088554
    Abstract: A liquid crystal display (LCD) apparatus includes: an LCD panel; a light source unit which emits light to the LCD panel; a heating device which preheats the light source unit; a temperature sensing unit which senses temperature of the light source unit and outputs a temperature information; and a variable voltage supplying unit which changes a driving voltage to be supplied to the heating device according to the temperature information of the temperature sensing unit.
    Type: Application
    Filed: September 17, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Seung-eon LEE
  • Publication number: 20060070768
    Abstract: A PCB assembly includes a main PCB having an accommodating slit part penetratingly formed therethrough and at least one main terminal part disposed at sides of the accommodating slit part, and a sub PCB having an inserting part which is insertable into the accommodating slit part, the sub PCB including a sub terminal part disposed to correspond to the main terminal part, and a through slot formed in the inserting part along an inserting direction of the sub PCB. Accordingly, the PCB assembly stably combines the sub PCB and the main PCB.
    Type: Application
    Filed: September 9, 2005
    Publication date: April 6, 2006
    Inventor: Seung-eon Lee
  • Publication number: 20060044303
    Abstract: A method of supplying a power to elements in a power supply apparatus including a primary side and a second side. Particularly, a method of supplying a driving power to an element at the primary side of the power supply apparatus from a primary coil of a transformer. A power factor improvement section improves a power factor of a received alternating current (AC) power. A transformer then receives the AC power having the improved power factor from a primary coil and generates an induced power at a secondary coil. The transformer then provides the AC power to drive a predetermined element located at the primary side of the power supply apparatus from the primary coil.
    Type: Application
    Filed: June 9, 2005
    Publication date: March 2, 2006
    Inventors: Seung-eon Lee, Kyoung-geun Lee, Jong-cheol Lee
  • Patent number: 6997723
    Abstract: A power inlet socket includes a socket body; live and neutral terminals provided on the socket body, and each having a first pin connected to the power plug and a second pin soldered on the substrate. A ground terminal is provided between the live terminal and the neutral terminal of the socket body; and a ground member is connected to the ground terminal and soldered on the substrate at opposite sides of the socket body. The socket body has a cavity formed with a bottom wall, opposite side walls, a top wall, and a rear wall, and which is open at one side thereof. The ground member is structured to connect the ground terminal at the rear wall and is forked so as to branch from the connection to the ground terminal to surround the upper wall and the opposite side walls.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: February 14, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seung-eon Lee
  • Publication number: 20050112919
    Abstract: A power inlet socket includes a socket body; live and neutral terminals provided on the socket body, and each having a first pin connected to the power plug and a second pin soldered on the substrate. A ground terminal is provided between the live terminal and the neutral terminal of the socket body; and a ground member is connected to the ground terminal and soldered on the substrate at opposite sides of the socket body. The socket body has a cavity formed with a bottom wall, opposite side walls, a top wall, and a rear wall, and which is open at one side thereof. The ground member is structured to connect the ground terminal at the rear wall and is forked so as to branch from the connection to the ground terminal to surround the upper wall and the opposite side walls.
    Type: Application
    Filed: November 22, 2004
    Publication date: May 26, 2005
    Inventor: Seung-eon Lee