Patents by Inventor Woo-Kyu Kim
Woo-Kyu 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).
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Patent number: 11973209Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.Type: GrantFiled: June 7, 2019Date of Patent: April 30, 2024Assignee: LG Chem, Ltd.Inventors: Eun Hee Lee, Seong Bae Kim, Young Su Park, Yi Rang Lim, Hong Kyu Park, Song Yi Yang, Byung Hyun Hwang, Woo Hyun Kim
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Publication number: 20240108778Abstract: Disclosed herein are an air cleaning and disinfection robot and a method of operating the same. The air cleaning and disinfection robot includes a driving unit configured to move autonomously in a target space, a plurality of air conditioning modules configured to manage air quality in the target space and detachably provided on the driving unit, a station on which the plurality of air conditioning modules are mounted, a docking unit configured to couple and separate the driving unit and each of the air conditioning modules to and from each other, and a detection unit configured to detect an operation environment of the target space, wherein the driving unit, based on information obtained by the detection unit, may selectively couple to and move with any one of the plurality of air conditioning modules.Type: ApplicationFiled: September 29, 2023Publication date: April 4, 2024Inventors: Tae Hyun KIM, Jong Wook KIM, Jong Kyu OH, Woo Jae LEE
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Patent number: 11939453Abstract: A plasticizer composition including a citrate-based material and an epoxidized oil, and the plasticizer composition capable of maintaining an excellent plasticization efficiency and providing an improved mechanical properties and stress resistance when compared with conventional phthalate-based plasticizer products.Type: GrantFiled: June 11, 2020Date of Patent: March 26, 2024Assignee: LG Chem, Ltd.Inventors: Hyun Kyu Kim, Seok Ho Jeong, Jeong Ju Moon, Woo Hyuk Choi
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Publication number: 20220345118Abstract: A master latch circuit, including a first p-type transistor, a first n-type transistor, and a second n-type transistor connected in series; a first node connected to the first p-type transistor and the first n-type transistor, and a NAND circuit configured to receive a signal of the first node and a clock signal and output a result of a NAND operation to a second node, wherein a gate of the first p-type transistor is connected to the second node.Type: ApplicationFiled: July 11, 2022Publication date: October 27, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byoung Gon KANG, Woo Kyu KIM, Tae Jun YOO, Dal Hee LEE
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Patent number: 11387817Abstract: A master latch circuit, including a first p-type transistor, a first n-type transistor, and a second n-type transistor connected in series; a first node connected to the first p-type transistor and the first n-type transistor, and a NAND circuit configured to receive a signal of the first node and a clock signal and output a result of a NAND operation to a second node, wherein a gate of the first p-type transistor is connected to the second node.Type: GrantFiled: March 29, 2021Date of Patent: July 12, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byoung Gon Kang, Woo Kyu Kim, Tae Jun Yoo, Dal Hee Lee
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Publication number: 20210328582Abstract: A master latch circuit, including a first p-type transistor, a first n-type transistor, and a second n-type transistor connected in series; a first node connected to the first p-type transistor and the first n-type transistor, and a NAND circuit configured to receive a signal of the first node and a clock signal and output a result of a NAND operation to a second node, wherein a gate of the first p-type transistor is connected to the second node.Type: ApplicationFiled: March 29, 2021Publication date: October 21, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Byoung Gon KANG, Woo Kyu KIM, Tae Jun YOO, Dal Hee LEE
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Patent number: 8502983Abstract: Disclosed are an apparatus and a method for detecting a surface plasmon resonance. The apparatus may radiate a polarized beam of light to a device, such as a surface plasmon resonance generator, and may measure variations in a temperature of the device to detect whether a surface plasmon resonance has occurred. The detection of a surface plasmon resonance may be associated with the presence of a particular material such as volatile organic compounds (VOCs) or materials disrupting ozone, for example.Type: GrantFiled: November 3, 2009Date of Patent: August 6, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sun-Rock Choi, Dae-Hwan Kim, Seung-Jin Oh, Joo-Ho Kim, Woo-Kyu Kim
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Patent number: 8045910Abstract: Disclosed are a light absorption device, a fixing unit including the same and an image forming apparatus including such fixing unit. The light absorption device includes a plurality of dielectric layers containing nano-rods. Surface plasmon resonance generated in response to certain wavelengths corresponding to the dielectric constants of the dielectric layers can result in an improvement in the light absorption efficiency. Further improvements can be realized by adjusting the dielectric constants of the dielectric layers.Type: GrantFiled: October 22, 2009Date of Patent: October 25, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sun-Rock Choi, Dae-Hwan Kim, Seung-Jin Oh, Joo-Ho Kim, Woo-Kyu Kim
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Publication number: 20100157306Abstract: Disclosed are an apparatus and a method for detecting a surface plasmon resonance. The apparatus may radiate a polarized beam of light to a device, such as a surface plasmon resonance generator, and may measure variations in a temperature of the device to detect whether a surface plasmon resonance has occurred. The detection of a surface plasmon resonance may be associated with the presence of a particular material such as volatile organic compounds (VOCs) or materials disrupting ozone, for example.Type: ApplicationFiled: November 3, 2009Publication date: June 24, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sun-Rock CHOI, Dae-Hwan Kim, Seung-Jin Oh, Joo-Ho Kim, Woo-Kyu Kim
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Publication number: 20100141731Abstract: Disclosed is a line printer head that exposes an object, e.g., a photoconductor body, of an image forming apparatus. The line printer head includes multiple light emitting devices in a linear arrangement along a main scanning direction. Each light emitting device includes a light emitting region, a first electrode on a lower portion of the light emitting region, a second electrode on an upper portion of the light emitting region and an optical waveguide disposed above the second electrode and configured to guide light generated by the light emitted region such that the light is output through an opening of the optical waveguide. The integrated circuit is configured to drive the light emitting devices and has multiple output terminals, each of which is connected to the first electrode of the respective corresponding one of the light emitting devices. The light emitting devices and the integrated circuit are formed on the same substrate.Type: ApplicationFiled: August 4, 2009Publication date: June 10, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-Chul KO, Woo-Kyu Kim, Shang-Hyeun Park
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Publication number: 20100129125Abstract: A light-absorptive device for absorbing light includes a light source configured to emit light and a light-absorptive element configured to absorb the light emitted from the source. The light-absorptive element includes a light-absorptive layer in which a nano-component comprised of one or more nano particles coated with a shape keeping agent is dispersed. The aspect ratio(s) and/or the dielectric constant of the light-absorptive layer may be selectively varied to realize a peak wavelength of absorption spectrum that corresponds to the wavelength(s) of the light emitted by the light source. The light-absorptive device may be incorporated as a heating unit, such as a fixing unit of an image forming apparatus to fix toner images on to a recording medium.Type: ApplicationFiled: November 24, 2009Publication date: May 27, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seung-Jin Oh, Dae-Hwan Kim, Sun-Rock Choi, Joo-Ho Kim, Woo-Kyu Kim
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Publication number: 20100111580Abstract: Disclosed are a light absorption device, a fixing unit including the same and an image forming apparatus including such fixing unit. The light absorption device includes a plurality of dielectric layers containing nano-rods. Surface plasmon resonance generated in response to certain wavelengths corresponding to the dielectric constants of the dielectric layers can result in an improvement in the light absorption efficiency. Further improvements can be realized by adjusting the dielectric constants of the dielectric layers.Type: ApplicationFiled: October 22, 2009Publication date: May 6, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sun-Rock CHOI, Dae-Hwan Kim, Seung-Jin Oh, Joo-Ho Kim, Woo-Kyu Kim
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Publication number: 20100060709Abstract: Disclosed are a line light source, a line printer head, and an image forming apparatus. The line light source includes a light waveguide unit which guides light emitted from a light emitting layer which is disposed between a bottom electrode and top electrodes, wherein the light waveguide unit is disposed on the top electrodes. Light is emitted through the surface area of light emitting areas defined by overlapping areas of the bottom electrode and the top electrodes. The light waveguide includes a plurality of openings, the sizes of which may be different than the surface area of the light emitting areas. The light emitting amount can be adjusted by adjusting the light emitting surface areas without reducing printing resolution of the image forming apparatus by employing the disclosed line light source as the line printer head.Type: ApplicationFiled: June 4, 2009Publication date: March 11, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Young-chul KO, Woo-Kyu KIM, Shang-Hyeun PARK, Jong-Chul CHOI
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Patent number: 7666575Abstract: The present invention relates to an antireflective coating composition comprising, (i) a thermal acid generator; (ii) a crosslinkable polymer comprising at least one aromatic group; and, (iii) a polymeric crosslinker comprising at least one unit of structure (6), where R11 to R13 is independently selected from H, (C1-C6) alkyl and aromatic group, R14 and R15 are independently (C1-C10) alkyl. The invention also relates to a process for imaging the antireflective coating composition of the present invention.Type: GrantFiled: October 18, 2006Date of Patent: February 23, 2010Assignee: AZ Electronic Materials USA CorpInventors: Woo-Kyu Kim, Hengpeng Wu, David Abdallah, Mark Neisser, PingHung Lu, Ruzhi Zhang, M. Dalil Rahman
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LIGHT ABSORBENT MEMBER, HEATING DEVICE, FIXING DEVICE AND IMAGE FORMING APPARATUS EMPLOYING THE SAME
Publication number: 20100034566Abstract: Disclosed are a novel light absorptive member, a heating device employing such light absorptive member, a fixing device employing such heating device and an image forming apparatus that uses the fixing device. The light absorptive member includes nano-rods dispersed therein, and can increase absorption efficiency of a heating device, such as, for example, a fixing device that uses a light source as a radiant heat source, due to the surface plasmon resonance phenomenon that occurs when the wavelength(s) of the light corresponds the peak wavelength(s) of the absorptive rate for the light based on the aspect ratio(s) of the nano-rods.Type: ApplicationFiled: July 14, 2009Publication date: February 11, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae-Hwan Kim, Joo-Ho Kim, Seung-Jin Oh, Sun-Rock Choi, Woo-Kyu Kim -
Patent number: 7542190Abstract: A tandem laser scanning unit (LSU) is provided. The tandem LSU includes a light source, a beam deflector, and an optical scanning lens. The beam deflector rotates on a light-emitting path of the light source to simultaneously deflect different light beams obliquely incident at a predetermined angle to each other within a sub-scanning plane substantially parallel to the rotational axis of the beam deflector. The optical scanning lens allows the light beams deflected by the beam deflector to be condensed on corresponding photosensitive drums. The optical scanning lens includes at least one sub-scanning cross-section having an aspherical surface to reduce the curvature of a scanning line. Using the tandem LSU, the distortion and curvature of the scanning line are corrected while providing an oblique incidence optical system having advantages in terms of manufacturing costs and driving efficiency.Type: GrantFiled: August 11, 2006Date of Patent: June 2, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Hyung-soo Kim, Woo-kyu Kim
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Publication number: 20080096125Abstract: The present invention relates to an antireflective coating composition comprising, (i) a thermal acid generator; (ii) a crosslinkable polymer comprising at least one aromatic group; and, (iii) a polymeric crosslinker comprising at least one unit of structure (6), where R11 to R13 is independently selected from H, (C1-C6) alkyl and aromatic group, R14 and R15 are independently (C1-C10) alkyl. The invention also relates to a process for imaging the antireflective coating composition of the present invention.Type: ApplicationFiled: October 18, 2006Publication date: April 24, 2008Inventors: Woo-Kyu Kim, Hengpeng Wu, David Abdallah, Mark Neisser, PingHung Lu, Ruzhi Zhang, M. Dalil Rahman
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Publication number: 20070298349Abstract: The present invention relates to a novel antireflective coating composition for forming an underlayer for a photoresist comprising an acid generator and a novel siloxane polymer, where the siloxane polymer comprises at least one absorbing chromophore and at least one self-crosslinking functionality of structure (1), where m is 0 or 1, W and W? are independently a valence bond or a connecting group linking the cyclic ether to the silicon of the polymer and L is selected from hydrogen, W? and W, or L and W? are combined to comprise a cycloaliphatic linking group linking the cyclic ether to the silicon of the polymer. The invention also relates to a process for imaging the photoresist coated over the novel antireflective coating composition and provides good lithographic results. The invention further relates to a novel siloxane polymer, where the siloxane polymer comprises at least one absorbing chromophore and at least one self-crosslinking functionality of structure (1).Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Ruzhi Zhang, Mark O. Neisser, Woo-Kyu Kim, David J. Abdallah, Francis Houlihan, Ping-Hung Lu, Hong Zhuang
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Patent number: 7242505Abstract: A beam deflector including a driving source for providing a rotation force, a beam deflection unit rotatably arranged on the driving source to deflect and scan an incident beam, and a cover member configured to cover the driving source and the beam deflection unit. The cover member has an aluminum foam layer located thereon to reduce vibration and noise occurring when the driving source and the beam deflection unit rotate.Type: GrantFiled: August 22, 2005Date of Patent: July 10, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Sang-Hoon Lee, Woo-Kyu Kim
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Publication number: 20070058231Abstract: A tandem laser scanning unit (LSU) is provided. The tandem LSU includes a light source, a beam deflector, and an optical scanning lens. The beam deflector rotates on a light-emitting path of the light source to simultaneously deflect different light beams obliquely incident at a predetermined angle to each other within a sub-scanning plane substantially parallel to the rotational axis of the beam deflector. The optical scanning lens allows the light beams deflected by the beam deflector to be condensed on corresponding photosensitive drums. The optical scanning lens includes at least one sub-scanning cross-section having an aspherical surface to reduce the curvature of a scanning line. Using the tandem LSU, the distortion and curvature of the scanning line are corrected while providing an oblique incidence optical system having advantages in terms of manufacturing costs and driving efficiency.Type: ApplicationFiled: August 11, 2006Publication date: March 15, 2007Inventors: Hyung-soo Kim, Woo-kyu Kim