Patents by Inventor Cheol AHN
Cheol AHN 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: 7995937Abstract: An image forming apparatus and a control method thereof are provided. The image forming apparatus includes: an image carrying body which includes a surface on which a developer which corresponds to printing data is applied; a transferring unit which receives transferring electric power to form a transferring area which transfers the developer to a transferring target body; a power supply unit which applies transferring electric power to the transferring unit; and a control unit which controls the power supply unit to apply first transferring electric power or second transferring electric power based on the amount of the developer in a unit section on a surface of the image carrying body. Thus, the present general inventive concept provides an image forming apparatus and a control method thereof for improving a printing image quality.Type: GrantFiled: March 24, 2009Date of Patent: August 9, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-hee Lee, Dong-cheol Ahn
-
Publication number: 20110165194Abstract: The present invention relates to an HBV vaccine comprising an entire hepatitis B surface antigen of L protein, M protein and S protein, in which the produced antigens form virus-like particles, and a multi-antigen vaccine further comprising an HBV core antigen in addition to the entire surface antigen, and a method for preparing the same. The vaccines provide various epitopes and have excellent immunogenicity to induce a strong humoral immune response as well as a cell-mediated immune response.Type: ApplicationFiled: January 28, 2008Publication date: July 7, 2011Inventors: Jung Sun Yum, Byung Cheol Ahn, Hyun Jin Jo, Dong Yeon Kim, Joo Youn Lee, Ki Hyun Kim, Jae Seung Yoon, Hong Mo Moon
-
Patent number: 7953346Abstract: An image forming apparatus having a developing cartridge includes a lower main body, and a developing cartridge installed in the lower main body and including a photosensitive medium. An upper main body may be separably installed on an upper side of the lower main body and includes an upper pressing member to press the developing cartridge downward. A lower pressing member, installed in the lower main body, is positioned to press the developing cartridge upward. In the case where a rotation axis of the photosensitive medium of the developing cartridge is set as a rotation center, a moment of force is applied to the developing cartridge by the upper pressing member and an opposing moment of force being is applied to the developing cartridge by the lower pressing member in the opposite direction.Type: GrantFiled: November 1, 2007Date of Patent: May 31, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Dong-cheol Ahn, Young-min Kim
-
Publication number: 20110059439Abstract: An expression vector, comprising a first reporter nucleic acid sequence operably linked to a first expression control sequence comprising a promoter; and a second reporter nucleic acid sequence operably linked to a second expression control sequence that comprises a response element that is activated or inactivated as one or more of the cells differentiate or dedifferentiate. Methods and kits for imaging and monitoring stem cells comprising the expression vector are also provided.Type: ApplicationFiled: September 9, 2009Publication date: March 10, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Srabani Bhaumik, Sanjiv Sam Gambhir, Ramasamy Paulmurugan, Shahriar Yaghoubi, Byeong-Cheol Ahn, Natesh Parashurama
-
Publication number: 20110013925Abstract: A developing device detachably coupled to an electrophotographic image forming apparatus which includes a housing including a photoconductive drum and at least one roller; and an electrical contact member disposed in the housing, connected to the at least one roller, and formed of a conductive metallic plate to provide an electrical path between the at least one roller and a power supply when the developing device is attached to the electrophotographic image forming apparatus, wherein the electrical contact member includes a base including a coupling unit to engage with the housing, a first elastic member to bend from the base in a first direction; a second elastic member to bend from the first elastic member in a second direction and including a contact to contact the at least one roller; and an anti-deformation unit to bend from the base and to face a surface of the first elastic member in the second direction of the second elastic member to prevent the first elastic member from bending in the second directType: ApplicationFiled: March 11, 2010Publication date: January 20, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Jong-in Kim, Jai-il Choi, Dong-cheol Ahn
-
Publication number: 20110002708Abstract: A developing device has a housing including a toner container containing toner, and a developing unit. The developing unit includes a developing roller and a photoconductive drum, and a barrier member including a toner supply window. The barrier member is combined with the housing to separate the toner container and the developing unit from each other. The developing unit also includes a blocking film that is attached to the barrier member to block the toner supply window. An end of the blocking film is exposed outside the housing through an opening formed in a sidewall of the housing. A bottom surface and first and second side surfaces of the barrier member are attached to a bottom surface and first and second side surfaces of the housing by using a welding process, and a distance between the first and second side surfaces of the barrier member and a distance between the first and second side surfaces of the housing increase from bottom to top.Type: ApplicationFiled: March 24, 2010Publication date: January 6, 2011Applicant: Samsung Electronics Co., LtdInventors: Jong-in KIM, Min-sik Ji, Jai-il Choi, Dong-cheol Ahn
-
Publication number: 20100311149Abstract: Disclosed herein is a biosensor. The biosensor includes a measuring layer configured to measure whether reaction to a biological sample has occurred. An upper cover is disposed on a top of the measuring layer, and is provided with an open window configured to allow a measurement area of the measuring layer to be exposed and an upper protrusion configured to protrude from an outer portion of the open window in a direction in which the upper protrusion is coupled to a lower panel. The lower panel is disposed below the measuring layer, and is provided with a lower protrusion which protrudes between the open window and the upper protrusion of the upper cover so that the lower protrusion is spaced apart from the upper protrusion by a gap and which presses the measuring layer so that a top of the measuring layer upwardly protrudes from the open window.Type: ApplicationFiled: March 11, 2010Publication date: December 9, 2010Applicant: INFOPIA CO., LTD.Inventors: Byeong-Woo Bae, Sung-Dong Lee, Byung-Hoon Kho, Ji-Eon Ryu, Jin-Kyeong Kim, Hyou-Arm Joung, Ku-Cheol Ahn
-
Publication number: 20100304475Abstract: Disclosed herein is a device for collecting a sample, which is intended to dispense a received sample onto a measurement strip. The device includes a main body and a pair of receiving pieces. The receiving pieces protrude from a first end of the main body in such a way as to be spaced apart from each other while facing each other, and receive the sample by capillary force acting on a space which is defined between the receiving pieces and which is open on right, left and bottom sides. The device allows the received sample to be easily transferred to a reaction zone of a measurement strip, and enables the sample to be completely absorbed by the reaction zone because of capillary force in a receiving area when the device comes into contact with the reaction zone of the strip.Type: ApplicationFiled: March 11, 2010Publication date: December 2, 2010Applicant: INFOPIA CO., LTD.Inventors: Byeong-Woo BAE, Sung-Dong LEE, Byung-Hoon KHO, Ji-Eon RYU, Jin-Kyeong KIM, Hyou-Arm JOUNG, Ku-Cheol AHN
-
Publication number: 20100203612Abstract: A specific targeting peptide binding to glypican-3 can specifically binds to glypican-3 overexpressed in carcinoma cells and includes an amino acid sequence represented by SEQ ID No. 1 or some thereof. Glypican-3 is overexpressed in malignant tumors including hepatocellular carcinoma, melanoma, germ cell tumor, etc., and may be targeted in diagnosis and treatment of tumors by marking the targeting peptide. A diagnosis using the targeting peptide may detect even small tumors more accurately than conventional methods. A treatment method using the targeting peptide may remove only carcinoma cells without harming other normal tissues.Type: ApplicationFiled: February 12, 2010Publication date: August 12, 2010Applicant: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Byeong Cheol AHN, Jae Tae LEE, Je Yeol CHO, Jung Soo YU, Yong Jin LEE, Sang Woo LEE, You La LEE
-
Patent number: 7732203Abstract: This inventive discloses a method for transdifferentiating mesenchymal stem cells into neuronal cells, which comprises increasing the level of a basic helix-loop-helix (bHLH) transcription factor in the mesenchymal stem cells, said cells being useful in cell therapy or gene therapy for treating brain neurological diseases such as Parkinson's disease, Alzheimer disease, Hungtington's disease, amyotrophic lateral sclerosis, cerebral paralysis and brain ischemia; and spine disfunction caused by a traumatic injury.Type: GrantFiled: August 14, 2003Date of Patent: June 8, 2010Assignee: Ajoll University Industry Cooperation FoundationInventors: Hae-Young Suh, Sung-Soo Kim, Ji-Won Kim, Young-Don Lee, Seung-Cheol Ahn
-
Publication number: 20100135685Abstract: An image forming apparatus and a control method thereof are disclosed. A charge unit charges a surface of an organic photo conductor (OPC) to a predetermined electric potential. A developing unit develops an electrostatic latent image formed on the surface of the OPC by coating a developer on the same. A power supply unit supplies power to the charge unit and the developing unit. A control unit regulates the power supplied to the charge unit and the developing unit. After a developing process in the developing unit, the control unit regulates the power applied to at least one of the charge unit and the developing unit so as to collect a residual developer on the surface of the OPC to the developing unit. Accordingly, contamination of the charge unit and the transfer unit can be prevented and an image of a good quality can be achieved.Type: ApplicationFiled: November 23, 2009Publication date: June 3, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Gun Soo CHANG, Dong Cheol Ahn
-
Patent number: 7675719Abstract: The present invention provides a current limiting module and a hybrid current limiter using different kinds of superconducting wires. The current limiting module includes a first superconducting wire that is wound in a predetermined direction, and a second superconducting wire that has quench characteristic different from the first superconducting wire and is wound to generate magnetic flux in a direction opposite to magnetic flux induced by the first superconducting wire. According to the present invention, inductance is generated due to unequal supply of fault current. Therefore, it is possible to prevent current from being suddenly increased, and to reduce the number of superconducting wires required to manufacture the current limiting module. Further, the hybrid current limiter does not need to include a separate coil for operating a fast switch.Type: GrantFiled: February 25, 2008Date of Patent: March 9, 2010Assignee: Industry-Academic Corporation Foundation, Yonsie UniversityInventors: Tae-Kuk Ko, Dong-Keun Park, Seong-Eun Yang, Young-Jae Kim, Ki-Sung Chang, Min-Cheol Ahn, Bok-Yeol Seok
-
Publication number: 20100026927Abstract: A receiving container for a display device includes a bottom plate, a sidewall and a grounding unit. The sidewall is extended from the bottom plate to define a receiving space. The grounding unit is integrally formed with the bottom plate. The grounding unit includes a grounding member that grounds a circuit board received in the receiving space. The circuit board includes a grounding electrode and the grounding member corresponds to the grounding electrode. The grounding member is formed on a rear surface of the bottom plate. The grounding member may include a protrusion or a projected portion having an elastic structure.Type: ApplicationFiled: October 14, 2009Publication date: February 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ahn-Ho JEE, Kun-Bin LEE, Dong-Hwan KIM, Hyeong-Cheol AHN
-
Publication number: 20100008682Abstract: An image forming apparatus and a control method thereof are provided. The image forming apparatus includes: an image carrying body which includes a surface on which a developer which corresponds to printing data is applied; a transferring unit which receives transferring electric power to form a transferring area which transfers the developer to a transferring target body; a power supply unit which applies transferring electric power to the transferring unit; and a control unit which controls the power supply unit to apply first transferring electric power or second transferring electric power based on the amount of the developer in a unit section on a surface of the image carrying body. Thus, the present general inventive concept provides an image forming apparatus and a control method thereof for improving a printing image quality.Type: ApplicationFiled: March 24, 2009Publication date: January 14, 2010Applicant: Samsung Electronics Co., LtdInventors: Jun-hee Lee, Dong-cheol Ahn
-
Patent number: 7630023Abstract: A receiving container for a display device includes a bottom plate, a sidewall and a grounding unit. The sidewall is extended from the bottom plate to define a receiving space. The grounding unit is integrally formed with the bottom plate. The grounding unit includes a grounding member that grounds a circuit board received in the receiving space. The circuit board includes a grounding electrode and the grounding member corresponds to the grounding electrode. The grounding member is formed on a rear surface of the bottom plate. The grounding member may include a protrusion or a projected portion having an elastic structure.Type: GrantFiled: November 2, 2005Date of Patent: December 8, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Ahn-Ho Jee, Kun-Bin Lee, Dong-Hwan Kim, Hyeong-Cheol Ahn
-
Publication number: 20090237579Abstract: A liquid crystal display (LCD) panel employed in an LCD device includes an array substrate and an opposite substrate. The array substrate includes a pixel electrode formed in a pixel area including a first sub-pixel area and a second sub-pixel area. The opposite substrate is spaced apart from the array substrate to receive a liquid crystal layer. The opposite substrate includes a first common electrode formed in correspondence with the pixel area, and a second common electrode being floated in correspondence with the second sub-pixel area to form a coupling capacitor.Type: ApplicationFiled: February 26, 2009Publication date: September 24, 2009Inventors: Kyoung-Ju SHIN, Hyeong-Cheol AHN, Jin-Oh PARK
-
Patent number: 7588717Abstract: The present invention relates to an apparatus for manufacturing compacted irons and an apparatus for manufacturing molten irons using the same. The apparatus for manufacturing compacted irons according to the present invention includes a charging hopper into which reduced materials containing fine reduced irons are charged, screw feeders installed inside the charging hopper to make an acute angle with a vertical direction and discharging the reduced materials containing fine reduced irons which enter into the charging hopper, and a couple of rolls separated from each other to form a gap between the rolls. The couple of rolls compact the reduced materials containing fine reduced irons discharged from the charging hopper by the screw feeders and manufacture compacted irons. Each screw feeders is arranged side by side along an axis direction of the couple of rolls and an extension of the center axis of each screw feeder passes through the gap.Type: GrantFiled: July 12, 2005Date of Patent: September 15, 2009Assignee: POSCOInventors: Kwang-Hee Lee, Sung-Kee Shin, Il-Hyun Cho, Do-Seung Kim, Hyun-Uck Sung, Deuk-Chae Kim, Byung-Sik Ahn, Kyu-Cheol Ahn, Myung-Ho Cho, Myung-Chan Shin
-
Publication number: 20090214435Abstract: A recombinant vector capable of expressing MDR1 shRNA and thymidine kinase, and a use thereof. More specifically, provided is a recombinant vector capable of efficiently expressing MDR1 shRNA and thymidine kinase in a host cell, a transfectant cell comprising the same recombinant vector, a composition for treating neoplastic diseases, comprising the same recombinant vector, and a method for imaging of neoplastic lesions using the same recombinant vector. The recombinant vector of the present invention is capable of achieving efficient intracellular expression of MDR1 shRNA and a thymidine kinase-GFP fusion protein within the host cell and is therefore highly effective for combined therapy of anticancer drugs. Further, the recombinant vector of the present invention enables imaging of neoplastic lesions. Therefore, the recombinant vector of the present invention can be used in combination with other anticancer drugs for treatment of neoplastic diseases.Type: ApplicationFiled: March 18, 2008Publication date: August 27, 2009Inventors: In San Kim, Seung Yoon Park, Jae Tae Lee, Byeong Cheol Ahn
-
Publication number: 20090190274Abstract: The present invention provides a current limiting module and a hybrid current limiter using different kinds of superconducting wires. The current limiting module includes a first superconducting wire that is wound in a predetermined direction, and a second superconducting wire that has quench characteristic different from the first superconducting wire and is wound to generate magnetic flux in a direction opposite to magnetic flux induced by the first superconducting wire. According to the present invention, inductance is generated due to unequal supply of fault current. Therefore, it is possible to prevent current from being suddenly increased, and to reduce the number of superconducting wires required to manufacture the current limiting module. Further, the hybrid current limiter does not need to include a separate coil for operating a fast switch.Type: ApplicationFiled: February 25, 2008Publication date: July 30, 2009Applicant: Industry-Academic Cooperation Foundation, Yonsei UniverstyInventors: Tae-Kuk Ko, Dong-Keun Park, Seong-Eun Yang, Young-Jae Kim, Ki-Sung Chang, Min-Cheol Ahn, Bok-Yeol Seok
-
Publication number: 20090155308Abstract: The present invention relates to an adjuvant comprising a lipopeptide and poly I:C. When the adjuvant of the present invention is used, the level of antigen specific antibody induction is synergistically increased and Th1 type immune response is also induced. Therefore, the adjuvant of the present invention can be very effectively used as an adjuvant in the formulation of preventive and therapeutic vaccines for viral or parasitic infection and cancer.Type: ApplicationFiled: December 5, 2008Publication date: June 18, 2009Applicant: DOBEEL CORPORATIONInventors: Hong Mo Moon, Byung Cheol Ahn, Jung-Sun Yum