Patents by Inventor Hyo Joong An
Hyo Joong An 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: 20160008876Abstract: The present invention provides a method for controlling the surface quality of an ultra-low carbon steel slab, the method comprising the steps of: measuring the phosphorus (P) concentration, sulfur (S) concentration and superheating degree of a molten steel which is introduced into a mould in a continuous casting process for producing the ultra-low carbon steel slab, the width of the mould, and the casting speed of the slab; and calculating the depth of a hook which is formed when the molten steel is solidified into the slab, based on the measured width of the mould, the measured phosphorus (P) concentration, sulfur (S) concentration and superheating degree of the molten steel, and the measured casting speed of the slab.Type: ApplicationFiled: December 26, 2013Publication date: January 14, 2016Inventors: Hae Young Seo, Suk Hyun Yoo, Hyo Joong Kwon, Yeong Joo Do, Kae Young Lee, Ju Tae Choi
-
Patent number: 8786204Abstract: There are provided a DC/DC converter and a driving apparatus having the same. The DC/DC converter includes a DC/DC converter part converting an input power into a predetermined DC power by switching the input power to thereby supply the converted DC power to a light emitting device; and a control part controlling switching of the DC/DC converter part in accordance with a driving signal applied to the light emitting device to thereby control a voltage level of the DC power.Type: GrantFiled: March 14, 2012Date of Patent: July 22, 2014Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Gab Park, Nam Jin Park, Heung Gyoon Choi, Han Hee Lee, Hyo Joong An, Kyu Min Park, Su Hun Jo
-
Patent number: 8717784Abstract: The present invention provides a control circuit of an LLC resonant converter including a minimum switching frequency variable circuit of varying a minimum switching frequency corresponding to an AC input voltage of the LLC resonant converter; and a first pulse signal generating unit and a second pulse signal generating unit to generate a first pulse signal and a second pulse signal based on a switching frequency limited by the minimum switching frequency variable circuit.Type: GrantFiled: December 1, 2011Date of Patent: May 6, 2014Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Gab Park, Nam Jin Park, Han Hee Lee, Hyo Joong An, Gyu Min Park, Heung Gyoon Choi
-
Patent number: 8614175Abstract: Disclosed herein is a cleaning solution composition for a solar cell, comprising: organic alkali compounds, water-soluble glycol ether compounds, percarbonates, organic phosphoric acids or salts thereof, and water.Type: GrantFiled: June 23, 2010Date of Patent: December 24, 2013Assignee: Dongwoo Fine-Chem Co., Ltd.Inventors: Hyo-Joong Yoon, Soon-Hong Bang, Sang-Tae Kim, Seung-Yong Lee
-
Publication number: 20130169180Abstract: There are provided a DC/DC converter and a driving apparatus having the same. The DC/DC converter includes a DC/DC converter part converting an input power into a predetermined DC power by switching the input power to thereby supply the converted DC power to a light emitting device; and a control part controlling switching of the DC/DC converter part in accordance with a driving signal applied to the light emitting device to thereby control a voltage level of the DC power.Type: ApplicationFiled: March 14, 2012Publication date: July 4, 2013Inventors: Sang Gab PARK, Nam Jin PARK, Heung Gyoon CHOI, Han Hee LEE, Hyo Joong AN, Kyu Min PARK, Su Hun JO
-
Patent number: 8446103Abstract: There is provided a lamp driver including: a power supplying part switching an input power, supplying a driving power to at least one lamp, and controlling brightness of the at least one lamp according to a dimming signal; a signal supplying part supplying a first comparison result signal obtained by comparing a current sensing signal sensing a current flowing through the at least one lamp with a reference signal having a current level set beforehand when the dimming signal is a logic high signal, and supplying a second comparison result signal having a voltage level set beforehand when the dimming signal is a logic low signal; and a controlling part controlling the switching of the power supplying part according to a signal being supplied by the signal supplying part.Type: GrantFiled: September 21, 2010Date of Patent: May 21, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Kyoo Han, Sung Soo Hong, Chung Wook Roh, Sang Gab Park, Young Seung Roh, Hyo Joong An, Heung Gyoon Choi, Han Hee Lee
-
Patent number: 8389703Abstract: This invention relates to nucleoside, nucleotide, and oligonucleotide analogs that incorporate non-standard nucleobase analogs, defined to be those that present a pattern of hydrogen bonds to a paired nucleobase analog in a complementary strand that is different from the pattern presented by adenine, guanine, cytosine, and thymine. The invention is specifically concerned with nucleotide analogs that present the donor-donor-acceptor, hydrogen bonding patterns on pyrimidine analogs, and especially those that are analogs of ribonucleotides, including protected ribonucleotides suitable for phosphoramidite-based synthesis of RNA. The heterocycles on these nucleoside analogs are aminopyridones that have electron withdrawing groups attached to the position analogous to the 5-position of the ring in standard pyrimidines, including nitro, cyano, and carboxylic acid derivatives.Type: GrantFiled: November 2, 2011Date of Patent: March 5, 2013Inventors: Steven A. Benner, Hyo-Joong Kim
-
Publication number: 20120163038Abstract: The present invention provides a control circuit of an LLC resonant converter including a minimum switching frequency variable circuit of varying a minimum switching frequency corresponding to an AC input voltage of the LLC resonant converter; and a first pulse signal generating unit and a second pulse signal generating unit to generate a first pulse signal and a second pulse signal based on a switching frequency limited by the minimum switching frequency variable circuit.Type: ApplicationFiled: December 1, 2011Publication date: June 28, 2012Inventors: Sang Gab Park, Nam Jin Park, Han Hee LEE, Hyo Joong An, Gyu Min Park, Heung Gyoon Choi
-
Publication number: 20120090670Abstract: Disclosed herein is a cleaning solution composition for a solar cell, comprising: organic alkali compounds, water-soluble glycol ether compounds, percarbonates, organic phosphoric acids or salts thereof, and water.Type: ApplicationFiled: June 23, 2010Publication date: April 19, 2012Applicant: Dongwoo Fine-Chem Co., Ltd.Inventors: Hyo-Joong Yoon, Soon-Hong Bang, Sang-Tae Kim, Seung-Yong Lee
-
Publication number: 20110234111Abstract: There is provided a lamp driver including: a power supplying part switching an input power, supplying a driving power to at least one lamp, and controlling brightness of the at least one lamp according to a dimming signal; a signal supplying part supplying a first comparison result signal obtained by comparing a current sensing signal sensing a current flowing through the at least one lamp with a reference signal having a current level set beforehand when the dimming signal is a logic high signal, and supplying a second comparison result signal having a voltage level set beforehand when the dimming signal is a logic low signal; and a controlling part controlling the switching of the power supplying part according to a signal being supplied by the signal supplying part.Type: ApplicationFiled: September 21, 2010Publication date: September 29, 2011Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Kyoo Han, Sung Soo Hong, Chung Wook Roh, Sang Gab Park, Young Seung Roh, Hyo Joong An, Heung Gyoon Choi, Han Hee Lee
-
Patent number: 7803460Abstract: A filament type nano-sized lone fiber and a method of producing the same are disclosed. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: GrantFiled: September 4, 2009Date of Patent: September 28, 2010Assignee: Korea Research Institute of Chemical TechnologyInventors: Jae Rock Lee, Seung Yong Jee, Hyo Joong Kim, Young Taik Hong, Seok Kim, Soo Jin Park
-
Publication number: 20090270431Abstract: The present invention relates to compounds according to the structure (I), Where B is formula (Ia), formula (Ib) or formula (Ic); A is H, OR2 or halogen (F, Cl, Br, I, preferably F or Br, more preferably F); A? is H, OR2 or halogen (F, Cl, Br, I, preferably F or Br, more preferably F); A? is H or OR1, with the proviso that when A? is OR, A is H; and when A is OR2, A? is H; X is C—R3 or N; Y is C—R3 or N; preferably X or Y is N and X and Y are not both simultaneously N; R3 is H or C1-C3 alkyl; D is H or NHR2; E is absent or H; G is O or NHR2; J is N or C—R4; K is N or C—H; R4 is H, halogen (F, Cl, Br, I), CN, —C(?O)NH2, NH2, NO2, —C?C—H (cis or trans) or —C?C—H; Ra is H or CH3; Each R1 is independently H, an acyl group, a C1-C20 alkyl or ether group, a phosphate, diphosphate, triphosphate, phosphodiester group; Each R2 is independently H, an acyl group, a C1-C20 alkyl or ether group; and Pharmaceutically acceptable salts, solvates or polymorphs thereof.Type: ApplicationFiled: October 19, 2006Publication date: October 29, 2009Applicant: THE UNIVERSITY OF GEORGIA RESEARCH FOUNDATIONInventors: David C.K. Chu, Jong Hyun Cho, Hyo-Joong Kim
-
Publication number: 20090117380Abstract: A filament type nano-sized long fiber and a method of producing the same. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced by dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of a conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.Type: ApplicationFiled: May 15, 2006Publication date: May 7, 2009Applicant: Korea Research Institute of Chemical TechnologyInventors: Jae-Rock Lee, Seung-Yong Jee, Hyo-Joong Kim, Young-Taik Hong, Seok Kim, Soo-Jin Park
-
Patent number: 5875007Abstract: A motion image( MPEG II) video stream transmission system for transferring MPEG II video stream to a subscriber by receiving 6 channels of a motion image(MPEG II) video stream, and includes: a MPEG II encoder for encoding an analog video signal on a motion image video signal; a framer for framing and outputting a MPEG II video stream by controlling a read clock of pure data of the MPEG II video stream whenever data is variable, registering a transmission velocity information to a video stream inputted in the MPEG II encoder; a first multiplexing means; a second-stage multiplexer; a headend having an optical transmission means; an optical transmission system; a first-stage demultiplexing means; a second-stage demultiplexing means; a remote terminal having a video switching system; and a subscriber terminal apparatus for converting the MPEG II video signal into an analog signal after reframing a video signal outputted from the remote terminal and outputting the converted signal.Type: GrantFiled: November 25, 1996Date of Patent: February 23, 1999Assignees: Electronics and Telecommunications Research Institute, Korea TelecommunicationInventors: Chul Hyung Zhung, Hyo Joong Kim, Sung Soo Kang
-
Patent number: 5843410Abstract: The present invention relates to a novel polymeric ultraviolet(UV) screening agent comprising at least one monomer represented by the following formula (I) in the molecule: ##STR1## in which X represents the following formula (II) or (III), ##STR2## wherein R represents C.sub.1 -C.sub.12 alkyl or C.sub.3 -C.sub.12 cycloalkyl which can be optionally substituted by C.sub.1 -C.sub.6 alkyl, and to a process for preparing the same.Type: GrantFiled: November 25, 1996Date of Patent: December 1, 1998Assignee: LG Chemical Ltd.Inventors: Hyo-Joong Kim, Jong-Tae Lee, Se-Hoon Kang
-
Patent number: 5818509Abstract: A line driving system according to the characteristic of a transmission medium is disclosed, including: a setup signal generator for generating a setup signal; an amplifier, connected to the setup signal generator, for amplifying an entire frequency band to a constant level, and changing the setup signal and a subscriber transmission signal; a frequency compensator, connected to the amplifier, for adjusting an amplification gain of a corresponding frequency; a line connector, connected to the frequency compensator and a cable, for connecting a driving signal to a transmission line medium; a setup signal receiver for receiving the transmitted setup signal; a clamp/signal detector, connected to the setup signal receiver, for detecting a (-) directional pulse signal of the setup signal, generating a signal clamped to a reference point, calculating a value based on a clamp level, and converting the value to a voltage value; a combination/discrimination/control generator connected to the amplifier and the frequencType: GrantFiled: November 19, 1996Date of Patent: October 6, 1998Assignee: Electronics and Telecommunications Research InstituteInventors: Hyo Joong Kim, Yong Seob Yoon