Patents by Inventor Yong Joon Park

Yong Joon Park 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).

  • Publication number: 20140098434
    Abstract: There is provided a lens actuator, including: a lens barrel in which at least one lens is provided on an optical axis; a magnetic part provided on one surface of the lens barrel; and a printed circuit board in which a coil pattern part generating electromagnetic force is provided, the printed circuit board having one surface facing the magnetic part, wherein magnetic material is provided on the other surface of the printed circuit board.
    Type: Application
    Filed: August 28, 2013
    Publication date: April 10, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Ho Baik, Hoon Heo, Jung Seok Lee, Jae Hyuk Lee, Yong Joon Park, Jung Wook Hwang
  • Patent number: 8670951
    Abstract: The present invention relates to an electronic scale having an air pressure change compensation function, which can precisely measure the weight of an object to be weighed even in an environment in which air pressure changes moment by moment in an airtight space such as in a glove box. According to the present invention, there is provided an electronic scale having an internal air pressure measurement sensor, by which the function of correcting the weight of an object to be weighed is provided even in an environment in which air pressure changes such as in the glove box is provided, thus enabling the weight of a sample to be precisely measured even in an environment in which air pressure changes moment by moment.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 11, 2014
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro and Nuclear Power Co., Ltd
    Inventors: Jei-Won Yeon, Kyuseok Song, Sang Eun Bae, Jong-Yun Kim, Hong-Joo Ahn, Yong Joon Park
  • Publication number: 20140009089
    Abstract: There are provided an apparatus and a method for driving a voice coil motor (VCM), the apparatus including an instruction signal generating unit generating an instruction signal according to a digital signal generated from an input signal, and a driving unit driving the voice coil motor (VCM) by selecting a path for a driving current applied to the voice coil motor (VCM) according to the digital signal and controlling a duty of the driving current according to the instruction signal.
    Type: Application
    Filed: May 13, 2013
    Publication date: January 9, 2014
    Applicants: WITHUSVISION Co., Ltd., SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Won Seob OH, Je Hyun Park, Oh Byoung Kwon, Kyoung Won Hyun, Jung Wook Hwang, Hoon Heo, Hong Soo Jung, Yong Joon Park
  • Publication number: 20130321937
    Abstract: Disclosed herein is a camera module in which a movement of a magnet is controlled by only magnetic force between the magnet and a yoke without a spring for controlling the movement of the magnet which operates up and down. The camera module includes: a lens module; and a main frame supporting the lens module and allowing the lens module to be driven in an optical axis direction, wherein the lens module includes: a lens assembly including a plurality of lenses; and a magnet fixed to one side of the lens module, and the main frame includes: a coil facing the magnet, fixed to one side within the main frame, and generating an electric field as power is applied thereto; and a yoke disposed to face the magnet with the main frame and the coil interposed therebetween and controlling driving of the lens module by attraction with the magnet.
    Type: Application
    Filed: March 13, 2013
    Publication date: December 5, 2013
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Ho BAIK, Won Seob OH, Hoon HEO, Jung Seok LEE, Jae Hyuk LEE, Yong Joon PARK, Jung Wook HWANG
  • Patent number: 8493561
    Abstract: A device for on-site measurement of concentration of uranium in high temperature molten salts is provided. More particularly, this device can be directly applied to a pyroprocess for reusing spent nuclear fuel and determine concentration of uranium 3+ and 4+ chemical species using ultraviolet-visible light absorption spectrometry. The device includes first and second optical waveguides submerged in molten salts including uranium through a port formed at an upper side of a pyrochemical process apparatus; a lengthwise driver installed at the port to be operated to adjust a distance between the optical waveguides; a light source for supplying light to the second optical waveguide as any one of the optical waveguides; and a spectrometer connected to the first optical waveguide as the other one of the optical waveguides to analyze the light emitted from the second optical waveguide and introduced through the first optical waveguide via the molten salts.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: July 23, 2013
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Yong Joon Park, Sang Eun Bae, Young-Hwan Cho, Kyuseok Song
  • Publication number: 20120123721
    Abstract: The present invention relates to an electronic scale having an air pressure change compensation function, which can precisely measure the weight of an object to be weighed even in an environment in which air pressure changes moment by moment in an airtight space such as in a glove box. According to the present invention, there is provided an electronic scale having an internal air pressure measurement sensor, by which the function of correcting the weight of an object to be weighed is provided even in an environment in which air pressure changes such as in the glove box is provided, thus enabling the weight of a sample to be precisely measured even in an environment in which air pressure changes moment by moment.
    Type: Application
    Filed: September 8, 2011
    Publication date: May 17, 2012
    Applicants: KOREA HYDRO AND NUCLEAR POWER CO., LTD, KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Jei-Won YEON, Kyuseok SONG, Sang Eun BAE, Jong-Yun KIM, Hong-Joo AHN, Yong Joon PARK
  • Publication number: 20120026495
    Abstract: A device for on-site measurement of concentration of uranium in high temperature molten salts is provided. More particularly, to a device for on-site measurement of concentration of uranium in high temperature molten salts that can be directly applied to a pyroprocess for reusing spent nuclear fuel and determine concentration of uranium 3+ and 4+ chemical species using ultraviolet-visible light absorption spectrometry.
    Type: Application
    Filed: December 23, 2010
    Publication date: February 2, 2012
    Applicants: KOREA HYDRO & NUCLEAR POWER CO., LTD., KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Yong Joon Park, Sang Eun Bae, Young-Hwan Cho, Kyuseok Song
  • Patent number: 8057772
    Abstract: Disclosed are mesoporous silica particles and a preparation method thereof, particularly, a method of preparing mesoporous silica particles, including mixing a silica precursor, an alkylamine-based surfactant, and a phosphoric acid-based cosurfactant, thus preparing a mixture solution (a mother liquor); adding or not adding the mixture solution with an acid solution, and conducting stirring, thus providing mesoporous silica particles; and thermally treating the mesoporous silica particles. These mesoporous silica particles are prepared using a phosphoric acid-based cosurfactant for stabilizing the surface of the particles to prevent the aggregation thereof, thereby uniformly distributing the particles.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: November 15, 2011
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Jong-Yun Kim, Suk Bon Yoon, Yong-Joon Park, Myung Ho Lee, Kwang-Yong Jee
  • Publication number: 20080286187
    Abstract: Disclosed are mesoporous silica particles and a preparation method thereof, particularly, a method of preparing mesoporous silica particles, including mixing a silica precursor, an alkylamine-based surfactant, and a phosphoric acid-based cosurfactant, thus preparing a mixture solution (a mother liquor); adding or not adding the mixture solution with an acid solution, and conducting stirring, thus providing mesoporous silica particles; and thermally treating the mesoporous silica particles. These mesoporous silica particles are prepared using a phosphoric acid-based cosurfactant for stabilizing the surface of the particles to prevent the aggregation thereof, thereby uniformly distributing the particles.
    Type: Application
    Filed: October 23, 2007
    Publication date: November 20, 2008
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: Jong-Yun KIM, Suk Bon YOON, Yong-Joon PARK, Myung Ho LEE, Kwang-Yong JEE
  • Patent number: 7427455
    Abstract: There are provided an anode for a lithium metal polymer secondary battery comprising an anodic current collector having a surface on which a plurality of recesses having a predetermined shape are formed and a method of preparing the same. The plurality of recesses are formed on a surface of the anodic current collector using a physical method or a chemical method. In a lithium metal polymer secondary battery employing the anode, oxidation/reduction of lithium and the formation of dendrite occur only in the recesses formed by surface patterning of the anodic current collector. Thus, expanding and shrinking of a battery due to a change in the thickness of the lithium anode can be prevented and cycling stability and the lifespan of a battery can be improved.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: September 23, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Gi Lee, Yong Sik Hong, Yong Joon Park, Kwang Sun Ryu
  • Patent number: 7157072
    Abstract: Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where 0?x?0.3, 0?y?0.3 and 0.1?x+y?0.3, and layered a-LiFeO2 structure. A method of synthesizing the lithium-chromium-titanium manganese oxide includes preparing a first mixed solution by dispersing titanium dioxide (TiO2) in a mixed solution of chrome acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), adding a lithium hydroxide (LiOH) solution to the first mixed solution to obtain homogeneous precipitates, forming precursor powder that has the formula Li[Li(1-x)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where 0?x?0.3, 0?y?0.3 and 0.1?x+y?0.3 by heating the homogeneous precipitates, and heating the precursor powder to form oxide powder having a layered structure.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: January 2, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Xianglan Wu, Yong Joon Park, Kwang Sun Ryu, Soon Ho Chang
  • Patent number: 7008608
    Abstract: Provided is a lithium-cobalt-manganese oxide having the formula Li[CoxLi(1/3?x/3)Mn(2/3?2x/3)]O2(0.05<X<0.9) which provide a stable structure and a superior discharge capacity, and the method of synthesizing of the same. The method of synthesizing the oxides according to the present invention comprises: preparing an aqueous solution of lithium salt, cobalt salt, and manganese salt; forming a gel by burning the aqueous solution; making oxide powder by burning the gel; forming a fine oxide powder having a layered structure by the twice of treatments. The lithium-cobalt-manganese oxide synthesized according to the present invention has a stable and superior electrochemical characteristic. The oxide is synthesized by simple and low cost heat treatment process.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 7, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yong Joon Park, Young Sik Hong, Xianglan Wu, Kwang Man Kim, Young Gi Lee, Kwang Sun Ryu, Soon Ho Chang
  • Patent number: 6986968
    Abstract: A cathode active material for a lithium secondary cell used in a cellular phone is disclosed. The cathode active material for the lithium secondary cell and the method the same having a high capacity and a long lifetime, different from LiCoO2 and LiMn2O4, Li(Ni, Co)O2, and V-system oxide that has been researched as the active material for substituting LiCoO2 are provided. The cathode active material for the lithium secondary cell in the next formula 1 is obtained by heating or chemically treating diadochite [Fe2(PO4)(SO4)(OH).6H2O] that is the mineral containing PO43?, SO42?, and OH?. LiaFebMc(PO4)x(SO4)y(OH)z ??(1) In the formula, M is at least one element selected from a radical consisting of Mg, Ti, Cr, Mn, Co, Ni, Cu, Zn, Al, and Si, with 0?a, c?0.5, 1?b?2, 0.5?x, y, z?1.5.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 17, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Sik Hong, Kwang Sun Ryu, Soon Ho Chang, Yong Joon Park, Young Gi Lee, Kwang Man Kim, Nam Gyu Park, Man Gu Kang, Xiang Lan Wu
  • Patent number: 6908708
    Abstract: A method of preparing layered lithium-chromium-manganese oxides having the formula Li[CrxLi(1/3?x/3) Mn(2/3?2x/3)]O2 where 0.1?X?0.5 for lithium batteries. Homogeneous precipitation is prepared by adding lithium hydroxide (LiOH) solution to a mixed solution of chromium acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), while precursor powders are prepared by firing the precipitation. After that, the precursor powders are subjected to two heat treatment to yield Li[CrxLi(1/3?x/3) Mn(2/3?2x/3)]O2 with ?-LiFeO2 structure.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: June 21, 2005
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Xianglan Wu, Yong Joon Park, Kwang Sun Ryu, Soon Ho Chang, Young-Sik Hong
  • Publication number: 20040228791
    Abstract: Provided is a lithium-cobalt-manganese oxide having the formula Li[CoxLi(1/3-x/3)Mn(2/3-2x/3)]O2 (0.05<X<0.9) which provide a stable structure and a superior discharge capacity, and the method of synthesizing of the same. The method of synthesizing the oxides according to the present invention comprises: preparing an aqueous solution of lithium salt, cobalt salt, and manganese salt; forming a gel by burning the aqueous solution; making oxide powder by burning the gel; forming a fine oxide powder having a layered structure by the twice of treatments. The lithium-cobalt-manganese oxide synthesized according to the present invention has a stable and superior electrochemical characteristic. The oxide is synthesized by simple and low cost heat treatment process.
    Type: Application
    Filed: December 17, 2003
    Publication date: November 18, 2004
    Inventors: Yong Joon Park, Young Sik Hong, Xianglan Wu, Kwang Man Kim, Young Gi Lee, Kwang Sun Ryu, Soon Ho Chang
  • Publication number: 20040115534
    Abstract: Provided is a method for preparing a Li—Mn—Ni oxide for a lithium secondary battery having a composition of Li[NixLi(1/3-2x/3)Mn(2/3-X/3)O2 (0.05<X<0.6), including the steps of: a] preparing an aqueous solution by resolving lithium salt, manganese salt and nickel salt into distilled water; b) forming gel by heating the aqueous solution; c) preparing oxide powder by burning the gel; d) performing a first thermal treatment on the oxide powder, and grinding the resultant; and e) performing a second thermal treatment on the resultant powder, and grinding the resultant. The technology of the present invention can prepare a Li—Mn—Ni oxide having a composition of Li[NixLi(1/3-2x/3)Mn(2/3-x/3)O2 (0.05<X<0.6) to be used as a cathode material of a lithium secondary battery having a stable and excellent electrochemical characteristics.
    Type: Application
    Filed: October 8, 2003
    Publication date: June 17, 2004
    Inventors: Yong-Joon Park, Young-Sik Hong, Xianglan Wu, Kwang Sun Ryu, Kwang Man Kim, Young-Gi Lee, Soon Ho Chang
  • Publication number: 20040105809
    Abstract: A method of preparing layered lithium-chromium-manganese oxides having the formula Li[CrxLi(1/3-x/3) Mn(2/3-2x/3)]O2 where 0.1≦X≦0.5 for lithium batteries. Homogeneous precipitation is prepared by adding lithium hydroxide (LiOH) solution to a mixed solution of chromium acetate (Cr3(OH)2(CH3CO2)7) and manganese acetate ((CH3CO2)2Mn.4H2O), while precursor powders are prepared by firing the precipitation. After that, the precursor powders are subjected to two heat treatment to yield Li[CrxLi(1/3-x/3) Mn(2/3-2x/3)]O2 with &agr;-LiFeO2 structure.
    Type: Application
    Filed: August 25, 2003
    Publication date: June 3, 2004
    Inventors: Xianglan Wu, Yong Joon Park, Kwang Sun Ryu, Soon Ho Chang, Young-Sik Hong
  • Publication number: 20040071866
    Abstract: The present invention relates to a method of manufacturing a cathode electrode for a secondary lithium battery using vanadium oxide. Vanadium oxide is dissolved in an aqueous solution containing H2O2 to form a gel. Thus, the gel can be applied to a metal support even when the binder is not used or the binder of a small amount is used. If vanadium oxide of an adequate amount is put into the aqueous solution containing. H2O2, a transparent aqueous solution is formed while oxygen is generated. The aqueous solution is then changed to a gel state of a viscosity as the time elapses. A small amount of a conductive material and a binder are added in the course that the gel is formed, and are then uniformly mixed with vanadium oxide being an active material, so that a slurry is formed. As the slurry has a high viscosity, it can be applied to the metal support even with a small amount of the binder. Further, as the conductive material, the binder, etc.
    Type: Application
    Filed: December 18, 2002
    Publication date: April 15, 2004
    Inventors: Yong Joon Park, Kwang Man Kim, Young Sik Hong, Xiang Lan Wu, Young Gi Lee, Kwang Sun Ryu, Soon Ho Chang
  • Publication number: 20040072069
    Abstract: A cathode active material for a lithium secondary cell used in a cellular phone is disclosed. The cathode active material for the lithium secondary cell and the method the same having a high capacity and a long lifetime, different from LiCoO2 and LiMn2O4, Li(Ni, Co)O2, and V-system oxide that has been researched as the active material for substituting LiCoO2 are provided. The cathode active material for the lithium secondary cell in the next formula 1 is obtained by heating or chemically treating diadochite [Fe2(PO4)(SO4)(OH).6H2O] that is the mineral containing PO43−, SO42−, and OH−.
    Type: Application
    Filed: December 20, 2002
    Publication date: April 15, 2004
    Inventors: Young Sik Hong, Kwang Sun Ryu, Soon Ho Chang, Yong Joon Park, Young Gi Lee, Kwang Man Kim, Nam Gyu Park, Man Gu Kang, Xiang Lan Wu
  • Patent number: 6582850
    Abstract: The present invention provides a new organic-inorganic (PDMcT+PANI)/V2O5 composites electrode material in which two different organic polymers are intercalated into the V2O5 interlayer, which shows higher discharge capacity than each isolated polymers and V2O5. Therefore, it can be used as a cathode in secondary lithium battery.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: June 24, 2003
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Nam-Gyu Park, Kwang-Man Kim, Kwang-Sun Ryu, Yong-Joon Park, Soon-Ho Chang