Patents by Inventor Sung-gi Kim

Sung-gi 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).

  • Patent number: 9007072
    Abstract: There is provided a capacitor sensor capable of controlling sensitivity, wherein the capacitor sensor measures the magnitude and direction of a shear force applied to the sensor, as well as the magnitude of a normal force applied on the surface of the sensor, and consists of a single cell including a pattern electrode capable of varying its shape to control the sensitivity of the sensor.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: April 14, 2015
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Ja Choon Koo, Hyouk Ryeol Choi, Hyung Pil Moon, Young Kwan Lee, Jae Do Nam, Baek Chul Kim, Jin Ah Chung, Sung Gi Kim
  • Publication number: 20140363985
    Abstract: Provided are a novel amino-silyl amine compound, a method for preparing the same, and a silicon-containing thin-film using the same, wherein the amino-silyl amine compound has thermal stability and high volatility and is maintained in a liquid state at room temperature and under a pressure where handling is easy to thereby form a silicon-containing thin-film having high purity and excellent physical and electrical properties by various deposition methods.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 11, 2014
    Inventors: Se Jin Jang, Sang Do Lee, Sung Gi Kim, Jong Hyun Kim, Byeong IL Yang, Jang Hyeon Seok, Sang Ick Lee, Myong Woon Kim
  • Publication number: 20140345453
    Abstract: There is provided a cylinder device having optimal arrangement of fine textures and optimal surface roughness capable of reducing wear of a cylinder bore side and a piston ring by processing fine textures in an optimal selection region of the cylinder bore side to improve lubrication characteristics between the piston ring and the cylinder bore side while reducing engine oil consumption by processing surface roughness of the cylinder bore side to an optimal status.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 27, 2014
    Inventors: Seok Ju Oh, Sung Gi Kim, Kyu Bong Han
  • Publication number: 20140350215
    Abstract: This disclosure relates to a method for preparing polyarylene sulfide having reduced iodine content while having excellent thermal stability, specifically to a method comprising polymerization reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 27, 2014
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, Il-Hoon Cha, Jae-Bong Lim, Sung-Gi Kim
  • Patent number: 8859720
    Abstract: The present invention relates to a method for preparing polyarylene sulfide, in which the polyarylene sulfide is prepared by a polymerization reaction of reactants including a diiodo aromatic compound and a sulfur compound, the method including: further adding 0.01 to 10.0 wt. % of diphenyl disulfide with respect to the weight of the polyarylene sulfide to the reactants to form the polyarylene sulfide having a melting point of 265 to 320° C. The diphenyl disulfide included in the reactants according to the present invention costs far less than other conventional polymerization inhibitors to dramatically lower the production cost, and the polyarylene sulfide prepared using the diphenyl disulfide exhibits low iodine content and very excellence in thermal stability.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: October 14, 2014
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, Jae-Bong Lim, Joon-Sang Cho, Il-Hoon Cha, Sung-Gi Kim
  • Patent number: 8807105
    Abstract: Disclosed is a cam follower of which the structure is improved such that the limit load can be increased. The cam follower is one which moves relative to a cam, mediated by a liquid lubricant, wherein a plurality of recesses are provided on the contact surface of the cam follower which makes contact with the cam, and the depth of the plurality of recesses of the contact surface is between 0.005 and 0.03 mm. By providing the plurality of recesses on the contact surface of the cam follower which makes contact with the cam, the present invention makes it possible to improve the state of lubrication between the cam follower and the cam which move relative to each other mediated by the liquid lubricant and to reduce the heat and the wear which occur at the interface between the same.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 19, 2014
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Sung Gi Kim, Keun Chul Song
  • Publication number: 20140192505
    Abstract: A display apparatus which enables a display to rotate with a tilting angle across a large range is provided. This allows a user to, conveniently use the display apparatus in order to enable quality of use to be improved during a tilting operation, and slim and elegant appearance to be implemented. The display apparatus includes a display configured to display an image on the front surface, a stand supporting the display, and a hinge device connecting the display to the stand such that the display may be tilted, wherein the hinge device includes a guide member formed on a rear surface of the display, a latch fixed to the stand and to slide along the guide member when the display is tilted, and a fixing member fixing the display not to move when an external force applied to the display is removed.
    Type: Application
    Filed: January 7, 2014
    Publication date: July 10, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin JUNG, Bo Ram PARK, Se Ki JANG, Yong Sub JUNG, Woo Young KAN, Sung Gi KIM, Hyun Jun JUNG, You Sik HONG
  • Patent number: 8759478
    Abstract: A method for preparing polyarylene sulfide having reduced iodine content and excellent thermal stability is described. The method includes reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: June 24, 2014
    Assignee: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, Il-Hoon Cha, Jae-Bong Lim, Sung-Gi Kim
  • Patent number: 8706006
    Abstract: A developing device that attaches/detaches to/from a main body of an image forming apparatus includes a photosensitive drum, a charging roller to rotate while contacting the photosensitive drum to charge a surface of the photosensitive drum to a uniform potential, and a separating member to rotate between a first position where the charging roller is separated from the photosensitive drum and a second position where the charging roller contacts the photosensitive drum. The separating member includes a body into which a rotary shaft of the charging roller is inserted to be rotatable, and a contact portion extending from the body and contacting the surface of the photosensitive drum when the separating member is located at the first position so as to separate the charging roller from the photosensitive drum, wherein the contact portion includes a friction member including rubber.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: April 22, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Jong-in Kim, Sung-gi Kim, Dong-cheol Ahn, Sang-hoon Lee
  • Publication number: 20140092568
    Abstract: A display device and a terminal having the same are disclosed. The terminal includes a base including a circuit board provided therein, and upper and lower housings, a support configured with one side combined with at least a portion of the lower housing and the other side having a head part configured for combination with a main body of a display, a first hole located on the upper housing and configured for combination with the support, and a second hole located on the circuit board and configured for combination with the support. The display device and the terminal having the same increase combining force between the support and the base and may use the same support and base in main bodies having various sizes, thus simplifying a manufacturing process and reducing part and assembly costs.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Beom Han KIM, Sung Gi KIM, You Sik HONG
  • Publication number: 20130239741
    Abstract: The present disclosure relates to a rocker arm shaft and a rocker arm shaft/bush assembly including a rocker arm shaft, and a rocker arm bush which encloses the rocker arm shaft, in which the rocker arm shaft has a surface on which minutely processed concave-convex portions are formed, thereby achieving excellent lubricative characteristics and as a result having excellent abrasion resistance.
    Type: Application
    Filed: November 16, 2011
    Publication date: September 19, 2013
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Sung Gi Kim, Seok Ju Oh
  • Publication number: 20130220113
    Abstract: The present disclosure relates to a cylinder having an inner wall formed with fine uneven patterns to improve durability. The fine uneven patterns according to the present disclosure increases oil film pressure between a piston ring and an inner wall of the cylinder, and smoothly supplies engine oil to where the engine oil is insufficient, thereby reducing abrasion between the piston ring and the inner wall of the cylinder.
    Type: Application
    Filed: November 3, 2010
    Publication date: August 29, 2013
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventor: Sung Gi Kim
  • Publication number: 20130129385
    Abstract: A developing device that attaches/detaches to/from a main body of an image forming apparatus includes a photosensitive drum, a charging roller to rotate while contacting the photosensitive drum to charge a surface of the photosensitive drum to a uniform potential, and a separating member to rotate between a first position where the charging roller is separated from the photosensitive drum and a second position where the charging roller contacts the photosensitive drum. The separating member includes a body into which a rotary shaft of the charging roller is inserted to be rotatable, and a contact portion extending from the body and contacting the surface of the photosensitive drum when the separating member is located at the first position so as to separate the charging roller from the photosensitive drum, wherein the contact portion includes a friction member including rubber.
    Type: Application
    Filed: May 23, 2012
    Publication date: May 23, 2013
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Jong-in KIM, Sung-gi KIM, Dong-cheol AHN, Sang-hoon LEE
  • Publication number: 20130115438
    Abstract: The present invention relates to polyarylene sulfide, in which a ratio of a peak area of a polymer chain of a second polyarylene sulfide having a lower molecular weight than the maximum peak molecular weight to a peak area of a polymer chain of a first polyarylene sulfide having a higher molecular weight than the maximum peak molecular weight is 1.3 or less in the molecular weight distribution of the polyarylene sulfide, as measured by gel permeation chromatography using polystyrene as a standard, and a preparation method thereof. This polyarylene sulfide exhibits excellent processability and generates no burrs (flashes) or the like, and can satisfactorily mold a product requiring high molding precision.
    Type: Application
    Filed: May 6, 2011
    Publication date: May 9, 2013
    Applicant: SK Chemical Co., Ltd.
    Inventors: Kyu-Tae Park, Sung-Gi Kim, Jae-Bong Lim, Il-Hoon Cha, Se-Ho Lee
  • Publication number: 20130093437
    Abstract: There is provided a capacitor sensor capable of controlling sensitivity, wherein the capacitor sensor measures the magnitude and direction of a shear force applied to the sensor, as well as the magnitude of a normal force applied on the surface of the sensor, and consists of a single cell including a pattern electrode capable of varying its shape to control the sensitivity of the sensor.
    Type: Application
    Filed: August 8, 2012
    Publication date: April 18, 2013
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Ja Choon KOO, Hyouk Ryeol CHOI, Hyung Pil MOON, Young Kwan LEE, Jae Do NAM, Baek Chul KIM, Jin Ah CHUNG, Sung Gi KIM
  • Publication number: 20120329984
    Abstract: This disclosure relates to polyarylene sulfide that may exhibit and maintain excellent properties and a method for preparing the same, wherein the polyarylene sulfide is in the form of pellet of 2 to 10 mm size immediately after melt polymerization, and has residual solvent content of 300 ppm or less, based on the total weight of resin. The polyarylene sulfide may exhibit and maintain excellent properties, particularly it does not generate foam in the product or stain on the surface, has excellent mechanical properties such as tensile strength, and the like, and thus, it may be usefully applied in the industrial field of preparing polyarylene sulfide and manufacturing a molded product using the same.
    Type: Application
    Filed: March 8, 2011
    Publication date: December 27, 2012
    Inventors: Sung-Gi Kim, Jae-bong Lim, Se-Ho Lee
  • Publication number: 20120329983
    Abstract: This disclosure relates to polyarylene sulfide that may exhibit excellent processability at low temperature, decrease outgassing and flash or burr generation, and thus may satisfactorily mold a product requiring high molding accuracy, and a method for preparing the same. Specifically, the polyarylene sulfide includes an arylene sulfide repeat unit and an arylene disulfide repeat unit, wherein the weight ratio of the arylene sulfide repeat unit:arylene disulfide repeat unit is 1:0.0001 to 1:0.05.
    Type: Application
    Filed: March 8, 2011
    Publication date: December 27, 2012
    Applicant: SK Chemical Co., Ltd.
    Inventors: Sung-Gi Kim, Jae-Bong Lim, II-Hoon Cha
  • Publication number: 20120322971
    Abstract: This disclosure relates to recyclable polyarylene sulfide that may exhibit and maintain excellent mechanical properties, particularly does not exhibit decrease in melt viscosity when it is molten, and thus, exhibit little deterioration of mechanical properties, and a method for preparing the same.
    Type: Application
    Filed: February 28, 2011
    Publication date: December 20, 2012
    Applicant: SK CHEMICALS CO., LTD.
    Inventors: Sung-Gi Kim, Il-Hoon Cha
  • Publication number: 20120312265
    Abstract: Disclosed is a cam follower of which the structure is improved such that the limit load can be increased. The cam follower is one which moves relative to a cam, mediated by a liquid lubricant, wherein a plurality of recesses are provided on the contact surface of the cam follower which makes contact with the cam, and the depth of the plurality of recesses of the contact surface is between 0.005 and 0.03 mm. By providing the plurality of recesses on the contact surface of the cam follower which makes contact with the cam, the present invention makes it possible to improve the state of lubrication between the cam follower and the cam which move relative to each other mediated by the liquid lubricant and to reduce the heat and the wear which occur at the interface between the same.
    Type: Application
    Filed: December 20, 2010
    Publication date: December 13, 2012
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Sung Gi Kim, Keun Chul Song
  • Publication number: 20120302726
    Abstract: This disclosure relates to a method for preparing polyarylene sulfide having reduced iodine content while having excellent thermal stability, specifically to a method comprising polymerization reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide.
    Type: Application
    Filed: January 31, 2011
    Publication date: November 29, 2012
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Yong-Jun Shin, II-Hoon Cha, Jae-Bong Lim, Sung-Gi Kim