Patents by Inventor Yong-Kwan Kim

Yong-Kwan 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: 8248906
    Abstract: A ferroelectric hard disk device is provided and includes: a ferroelectric media having a bottom electrode and a ferroelectric layer disposed on the bottom electrode; and a head formed above the ferroelectric media, the head being operative to write and reproduce information on the ferroelectric layer.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: August 21, 2012
    Assignee: Seagate Technology International, LLC
    Inventors: Seung-bum Hong, Sung-hoon Choa, Ju-hwan Jung, Hyoung-soo Ko, Yong Kwan Kim
  • Patent number: 8206803
    Abstract: Provided is an information storage medium using nanocrystal particles, a method of manufacturing the information storage medium, and an information storage apparatus including the information storage medium. The information storage medium includes a conductive layer, a first insulating layer formed on the conductive layer, a nanocrystal layer that is formed on the first insulating layer and includes conductive nanocrystal particles that can trap charges, and a second insulating layer formed on the nanocrystal layer.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: June 26, 2012
    Assignee: Seagate Technology International
    Inventors: Seung-bum Hong, Simon Buehlmann, Shin-ae Jun, Sung-hoon Choa, Eun-joo Jang, Yong-kwan Kim
  • Patent number: 8183497
    Abstract: The present invention relates to an apparatus and method for capturing an image of a welding spot during a welding task and determining an accurate position of the welding spot based on the captured image in order to perform an accurate welding task. A beam splitter splits a path of light reflected from a welding section of a spacer grid from a path of a laser beam generated from a laser generator. An image sensor receives light reflected from a welding spot of the spacer grid, and senses and stores an image of the spacer grid. Welding control means controls the image sensor to capture the image of the spacer grid, receives the image of the spacer grind from the image sensor, calculates an accurate position of the welding spot based on the received image, corrects position information of the welding spot based on the calculated position, and controls a servo motor so that the laser generator can accurately collimate the welding spot based on the corrected position value.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: May 22, 2012
    Assignee: Korea Nuclear Fuel Co., Ltd.
    Inventors: Hak-beum Park, Byeong-Eun Oh, Myoung-ho Oh, Yong-kwan Kim, Hung-soon Chang, Chang-hwan Hwang, Sang-hyun Lim
  • Patent number: 8057047
    Abstract: A heat radiation structure for a portable micro projector that enables efficient radiation of heat generated therein. A projector module irradiates light of high intensity using a lamp to project an image to an external screen. A thermally conductive plate having a plate-like shape, the projector module being attached to one surface of the thermally conductive plate to transfer heat generated in the projector module. A heat radiation case to which the thermally conductive plate to which the projector module is attached is coupled therein to emit the heat transferred through the thermally conductive plate outside.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: November 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Kwan Kim, Du Chang Heo, Jung Kee Lee
  • Patent number: 8016430
    Abstract: A radiation structure of a mobile communication terminal having a projector which rapidly dissipates heat generated from the projector and other elements built into the terminal. The mobile communication terminal includes a projector implementing an image-projection function, and a projector cover, which is composed of a heat conductive material such that at least one inner surface thereof is brought into close contact with the projector so as to dissipate heat generated from the projector to the outside of the terminal.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: September 13, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Du-Chang Heo, Yong-Kwan Kim, Dong-Hoon Jang, Jung-Kee Lee
  • Patent number: 7875320
    Abstract: A method for producing a film of vanadium pentoxide nanowires having improved alignment is provided.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: January 25, 2011
    Assignee: Korea University Industry and Academy Cooperation Foundation
    Inventors: Jae-Hyun Park, Jeong-Sook Ha, Yong-Kwan Kim
  • Patent number: 7857431
    Abstract: A piezoelectric substance element has a piezoelectric substance film and a pair of electrodes connected to the piezoelectric substance film on a substrate, and a main component of the piezoelectric substance film is Pb(Zr, Ti)O3, a composition ratio of Zr/(Zr+Ti) is over 0.4 but less than 0.7, the piezoelectric substance film is a film having at last a tetragonal crystal a-domain and a c-domain within a range of ±10° with respect to the surface of the substrate, and a volume rate of the c-domain to the total of the a-domain and the c-domain is equal to or larger than 20% and equal to or smaller than 60%.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 28, 2010
    Assignees: Canon Kabushiki Kaisha, Tokyo Institute of Technology
    Inventors: Tetsuro Fukui, Kenichi Takeda, Toshihiro Ifuku, Hiroshi Funakubo, Shintaro Yokoyama, Yong Kwan Kim, Hiroshi Nakaki, Risako Ueno, Shoji Okamoto
  • Patent number: 7804231
    Abstract: Provided are a piezoelectric film, a piezoelectric film element, a liquid discharge head using the piezoelectric film element, and a liquid discharge apparatus. A piezoelectric film element that can be suitably used for a discharge pressure-generating element of a liquid discharge head is obtained by using an epitaxial oxide film composed of a perovskite composite oxide constituted according to a general formula ABO3 as a piezoelectric film. The epitaxial oxide film has at least an A domain and a B domain having a crystal orientation deviation with respect to each other. The crystal orientation deviation between the A domain and the B domain is less than 2°.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: September 28, 2010
    Assignees: Canon Kabushiki Kaisha, Tokyo Institute of Technology
    Inventors: Toshihiro Ifuku, Katsumi Aoki, Takanori Matsuda, Hiroshi Funakubo, Shintaro Yokoyama, Yong Kwan Kim, Hiroshi Nakaki, Rikyu Ikariyama
  • Publication number: 20100231137
    Abstract: A light source driving apparatus is disclosed which includes a power supply including a power supply terminal connected to a first path through which a power source is supplied to a light source and including a feedback terminal for receiving a feedback of the power source supplied to the light source, a feedback resistor connected to the feedback terminal, and a current divider for branching a current flowing into the first path and supplying the branched current to the feedback resistor.
    Type: Application
    Filed: March 15, 2010
    Publication date: September 16, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-Chan KEH, Byeong-Hoon Park, Yong-Kwan Kim
  • Publication number: 20100096369
    Abstract: Disclosed therein is a multi-axis laser welding head for a spacer grid, which is one of essential components of a nuclear fuel assembly. More particularly, the multi-axis laser welding head for the spacer grid can be operated more smoothly and variously during the welding of the spacer grid to thereby weld the spacer grid more exactly and precisely. For this, the multi-axis laser welding head includes a welding head having a movement within a predetermined angle like the back and forth swing of the pendulum, and can irradiate a laser beam in various directions by having additional axis in comparison with the prior art.
    Type: Application
    Filed: January 8, 2008
    Publication date: April 22, 2010
    Applicant: Korea Nuclear Fuel Co., Ltd.
    Inventors: Byeong-Eun Oh, Hak-beum Park, Yong-kwan Kim, Myoung-ho Oh, Hung-soon Chang, Sang-hyun Lim
  • Publication number: 20100025425
    Abstract: The present invention relates to a strip supply device including: a strip accommodation member having a cassette part having a plurality of rows of vertically laminated strips accommodated side by side therein and a cover part adapted to be slidingly movable to the cassette part so as to open and close the opened portion on the lower side of the cassette part; a take-out module having a plurality of mounting parts each formed to a depth corresponding to the height of one strip, so as to take out the strips mounted on the mounting parts by the number of units and to move them to a predetermined position; and a moving module adapted to move the strip accommodation member in one direction so as to place one of the plurality of strip rows correspondingly to the mounting parts of the take-out module.
    Type: Application
    Filed: April 24, 2009
    Publication date: February 4, 2010
    Inventors: Hae Seop JANG, Sang Min Lee, Yong Kwan Kim, Young Nam Park, Yong Chan Yun
  • Publication number: 20090220822
    Abstract: Provided are a ferroelectric recording medium and a method of manufacturing a ferroelectric recording medium. The method includes forming an electrode layer of a conductive material on a substrate, forming an intermediate layer of a dielectric material on the electrode layer, forming a source material layer on the intermediate layer, and forming a ferroelectric layer from the source material layer by performing an annealing process.
    Type: Application
    Filed: September 26, 2008
    Publication date: September 3, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Simon BUEHLMANN, Yong-kwan KIM
  • Publication number: 20090168238
    Abstract: Provided is an information storage medium using a ferroelectric, including a substrate having an amorphous crystal structure, an electrode layer formed on the substrate, and a ferroelectric layer in a (001) direction formed on the electrode layer.
    Type: Application
    Filed: July 2, 2008
    Publication date: July 2, 2009
    Applicants: SAMSUNG ELECTRONICS CO., LTD, POHANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Yong-kwan KIM, Dae-hong KIM, Sung-gi BAIK, Seung-bum HONG
  • Publication number: 20090162272
    Abstract: A method for producing a film of vanadium pentoxide nanowires having improved alignment is provided.
    Type: Application
    Filed: February 12, 2008
    Publication date: June 25, 2009
    Inventors: Jae-Hyun Park, Jeong-Sook Ha, Yong-Kwan Kim
  • Publication number: 20090096996
    Abstract: A heat radiation structure for a portable micro projector that enables efficient radiation of heat generated therein. A projector module irradiates light of high intensity using a lamp to project an image to an external screen. A thermally conductive plate having a plate-like shape, the projector module being attached to one surface of the thermally conductive plate to transfer heat generated in the projector module. A heat radiation case to which the thermally conductive plate to which the projector module is attached is coupled therein to emit the heat transferred through the thermally conductive plate outside.
    Type: Application
    Filed: September 29, 2008
    Publication date: April 16, 2009
    Inventors: Yong Kwan KIM, Du Chang Heo, Jung Kee Lee
  • Publication number: 20090085476
    Abstract: Disclosed herein is a red phosphorescent compound represented by Formula 1 below: wherein Further disclosed herein is an organic electroluminescent (EL) device using the red phosphorescent compound.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Inventors: Chun Gun Park, Jung Keun Kim, Hyun Cheol Jeong, Jong Kwan Bin, Sung Hoon Pieh, Do Han Kim, Yong Kwan Kim
  • Publication number: 20090084764
    Abstract: The present invention relates to an apparatus and method for capturing an image of a welding spot during a welding task and determining an accurate position of the welding spot based on the captured image in order to perform an accurate welding task. A beam splitter splits a path of light reflected from a welding section of a spacer grid from a path of a laser beam generated from a laser generator. An image sensor receives light reflected from a welding spot of the spacer grid, and senses and stores an image of the spacer grid. Welding control means controls the image sensor to capture the image of the spacer grid, receives the image of the spacer grind from the image sensor, calculates an accurate position of the welding spot based on the received image, corrects position information of the welding spot based on the calculated position, and controls a servo motor so that the laser generator can accurately collimate the welding spot based on the corrected position value.
    Type: Application
    Filed: January 8, 2008
    Publication date: April 2, 2009
    Applicant: Korea Nuclear Fuel Co., Ltd.
    Inventors: Hak-beum PARK, Byeong-Eun OH, Myoung-ho OH, Yong-kwan KIM, Hung-soon CHANG, Chang-hwan HWANG, Sang-hyun LIM
  • Publication number: 20090033880
    Abstract: A radiation structure of a mobile communication terminal having a projector which rapidly dissipates heat generated from the projector and other elements built into the terminal. The mobile communication terminal includes a projector implementing an image-projection function, and a projector cover, which is composed of a heat conductive material such that at least one inner surface thereof is brought into close contact with the projector so as to dissipate heat generated from the projector to the outside of the terminal.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 5, 2009
    Inventors: Du-Chang Heo, Yong-Kwan Kim, Dong-Hoon Jang, Jung-Kee Lee
  • Publication number: 20080297730
    Abstract: A projector includes: a plurality of light sources for generating lights having different colors; a spatial optical modulator for performing a line-modulation of the lights; wavelength selection filters, disposed between the light sources and the spatial optical modulator, for transmitting or reflecting the lights according to light wavelengths; and a scanner for projecting the light incident from the spatial optical modulator in a line-scan scheme.
    Type: Application
    Filed: March 28, 2008
    Publication date: December 4, 2008
    Inventors: Mun-Kue Park, Yong-Kwan Kim
  • Publication number: 20080247085
    Abstract: A ferroelectric hard disk device is provided and includes: a ferroelectric media having a bottom electrode and a ferroelectric layer disposed on the bottom electrode; and a head formed above the ferroelectric media, the head being operative to write and reproduce information on the ferroelectric layer.
    Type: Application
    Filed: December 26, 2007
    Publication date: October 9, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-bum Hong, Sung-hoon Choa, Ju-hwan Jung, Hyoung-soo Ko, Yong Kwan Kim