Patents by Inventor Chang H. Lee
Chang H. Lee 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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Publication number: 20100143585Abstract: A carbon black pellet comprising an inner core of de-aerated carbon black and an outer surrounding shell of an encapsulating material, the shell of the encapsulating material having an average thickness of from about 1% to about 10% of the average thickness of the pellet.Type: ApplicationFiled: January 8, 2010Publication date: June 10, 2010Inventor: Chang H. Lee
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Patent number: 7651772Abstract: A carbon black pellet comprising an inner core of de-aerated carbon black and an outer surrounding shell of an encapsulating material, the shell of the encapsulating material having an average thickness of from about 1% to about 10% of the average thickness of the pellet.Type: GrantFiled: January 31, 2007Date of Patent: January 26, 2010Assignee: Continental Carbon CompanyInventor: Chang H. Lee
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Publication number: 20090263311Abstract: The invention relates to a method of removing impurities from solids comprising forming a solid solution, passing the solid solution through an ion exchanger such that at least some impurities present in the solid solution are retained by the ion exchanger, and recovering the solid solution from the ion exchanger.Type: ApplicationFiled: April 17, 2008Publication date: October 22, 2009Inventor: CHANG H. LEE
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Publication number: 20090053118Abstract: The invention relates to an ion exchanger for removing impurities from solids comprising an inlet for receiving a solid solution containing impurities, and a flow modifier for modifying the flow of the solid solution within the ion exchanger.Type: ApplicationFiled: April 17, 2008Publication date: February 26, 2009Inventor: CHANG H. LEE
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Publication number: 20080182107Abstract: A carbon black pellet comprising an inner core of de-aerated carbon black and an outer surrounding shell of an encapsulating material, the shell of the encapsulating material having an average thickness of from about 1% to about 10% of the average thickness of the pellet.Type: ApplicationFiled: January 31, 2007Publication date: July 31, 2008Inventor: Chang H. Lee
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Patent number: 7185913Abstract: Apparatus (10) for helping to protect an occupant of a vehicle (12) includes an inflatable windshield curtain (14). The windshield curtain (14) is inflatable away from a roof (40) of the vehicle to a position between a windshield (50) of the vehicle and a vehicle occupant. The windshield curtain (14) includes an inflatable upper portion (190) and an inflatable lower portion (192). The upper portion (190) is inflatable between the roof (40) and an instrument panel (64) of the vehicle (12) and between the windshield (50) and a vehicle occupant. The lower portion (192) is bifurcated and includes a first chamber (194) inflatable against a surface (222) of the instrument panel (64) presented generally toward the vehicle occupant. The lower portion (192) also includes a second chamber (196) inflatable against the windshield (50) and a surface (220) of the instrument panel (64) adjacent the windshield.Type: GrantFiled: June 23, 2003Date of Patent: March 6, 2007Assignee: TRW Vehicle Safety Systems Inc.Inventors: Ali Emam Bakhsh, Ayad Nayef, Chang H. Lee
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Patent number: 7055852Abstract: A windshield curtain (14) is inflatable away from a roof (40) of a vehicle (12) to a position between a windshield (50) of the vehicle and a vehicle occupant and between an instrument panel (64) of the vehicle and the vehicle occupant. The windshield curtain (14) includes a center panel (102) that has a length and opposite first and second side portions (110 and 112) that extend along its length. The windshield curtain (14) also includes first and second side panels (230 and 240), each having a respective periphery (232 and 242). The periphery (232) of the first side panel (230) is interconnected with the center panel (102) along the first side portion (110) of the center panel. The periphery (242) of the second side panel (112) is interconnected with the center panel along the second side portion (112) of the center panel.Type: GrantFiled: September 9, 2003Date of Patent: June 6, 2006Assignee: TRW Vehicle Safety Systems Inc.Inventors: Ali Emam Bakhsh, Al A. Saberan, Ayad G. Nayef, Jay Blackson, Chang H. Lee
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Publication number: 20040256841Abstract: Apparatus (10) for helping to protect an occupant of a vehicle (12) includes an inflatable windshield curtain (14). The windshield curtain (14) is inflatable away from a roof (40) of the vehicle to a position between a windshield (50) of the vehicle and a vehicle occupant. The windshield curtain (14) includes an inflatable upper portion (190) and an inflatable lower portion (192). The upper portion (190) is inflatable between the roof (40) and an instrument panel (64) of the vehicle (12) and between the windshield (50) and a vehicle occupant. The lower portion (192) is bifurcated and includes a first chamber (194) inflatable against a surface (222) of the instrument panel (64) presented generally toward the vehicle occupant. The lower portion (192) also includes a second chamber (196) inflatable against the windshield (50) and a surface (220) of the instrument panel (64) adjacent the windshield.Type: ApplicationFiled: June 23, 2003Publication date: December 23, 2004Applicant: TRW Vehicle Safety Systems Inc.Inventors: Ali Emam Bakhsh, Ayad Nayef, Chang H. Lee
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Patent number: 6734984Abstract: A computer system or peripheral device includes an arithmetic-logic circuit that provides, for example, in binary parallel format a maximum code from a set of input codes, each input code in binary parallel format. The circuit has minimal propagation delay owing to its expandable architecture which includes: an array of product term generators, a summary term generator, and a selection circuit. Each product term generator primarily includes one AND gate per product term having inputs that combine bits of an input code, the product terms being organized in sets. The summary term generator includes one OR gate for each summary term. The selection circuit includes a multiplexer for each set having data inputs responsive to summary term signals and control inputs responsive to summary term signals of higher significance than the highest summary term on a data input of the multiplexer. In illustrated embodiments, a printer includes an integrated circuit processor of the present invention.Type: GrantFiled: September 21, 2001Date of Patent: May 11, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: M. Therese Prenn, Chang H. Lee
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Publication number: 20040015853Abstract: A computer system or peripheral device includes an arithmetic-logic circuit that provides, for example, in binary parallel format a maximum code from a set of input codes, each input code in binary parallel format. The circuit has minimal propagation delay owing to its expandable architecture which includes: an array of product term generators, a summary term generator, and a selection circuit. Each product term generator primarily includes one AND gate per product term having inputs that combine bits of an input code, the product terms being organized in sets. The summary term generator includes one OR gate for each summary term. The selection circuit includes a multiplexer for each set having data inputs responsive to summary term signals and control inputs responsive to summary term signals of higher significance than the highest summary term on a data input of the multiplexer. In illustrated embodiments, a printer includes an integrated circuit processor of the present invention.Type: ApplicationFiled: September 21, 2001Publication date: January 22, 2004Inventors: M. Therese Prenn, Chang H. Lee
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Patent number: 6356354Abstract: A computer system or peripheral device includes an arithmetic-logic circuit that provides, for example, in binary parallel format a maximum code from a set of input codes, each input code in binary parallel format. The circuit has minimal propagation delay owing to its expandable architecture which includes: an array of product term generators, a summary term generator, and a selection circuit. Each product term generator primarily includes one AND gate per product term having inputs that combine bits of an input code, the product terms being organized in sets. The summary term generator includes one OR gate for each summary term. The selection circuit includes a multiplexer for each set having data inputs responsive to summary term signals and control inputs responsive to summary term signals of higher significance than the highest summary term on a data input of the multiplexer. In illustrated embodiments, a printer includes an integrated circuit processor of the present invention.Type: GrantFiled: September 18, 1998Date of Patent: March 12, 2002Assignee: Hewlett-Packard Co.Inventors: M. Therese Prenn, Chang H. Lee
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Patent number: 5502366Abstract: A battery pack coupler for a camcorder including a plurality of guide holes formed on a battery-attaching plate and guide ribs formed on the battery-attaching plate, all operating lever in which hooking pieces are provided on the inner surface of the battery-attaching plate and one end of which is projected outside a housing, and an elastically biasing device for elastically biasing the operating lever in one direction, wherein openings are formed on the bottom and one flank of a battery pack.Type: GrantFiled: May 16, 1994Date of Patent: March 26, 1996Assignee: Samsung Electronics Co., Ltd.Inventor: Chang H. Lee
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Patent number: 5450278Abstract: A chip type capacitor with a multi-layer structure comprising a plurality of inner electrodes classified into two groups one being used as parts of signal lines and the other being connected to grounded lines. Each of the inner electrodes for radio frequency passages has a pair of inwardly extending recesses adapted to make current flows generated in the inner electrode by radio frequency noise be opposite to each other. Each of at least two grounded inner electrode pairs is interposed between vertically adjacent inner electrodes used as parts of signal lines. The inner electrodes of each pair are connected to ground terminals, respectively, and have a shape formed by removing one protruded grounding portion from a cross shape.Type: GrantFiled: December 30, 1992Date of Patent: September 12, 1995Assignees: Electronics and Telecommunications Research Institute, Korea Telecommunication AuthorityInventors: Chang H. Lee, Suk J. Lee, Sang S. Lee, Tae G. Choy
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Patent number: 5074520Abstract: An automatic faucet is disclosed which includes a faucet body having a water discharge end and sensors mounted on the faucet for sensing the presence or absence of an object adjacent the faucet. A water supply valve is located in the faucet body which includes a diaphragm type primary valve to control discharge of water from the faucet. Operation of the prinmary valve is controlled by a motor operated in response to a signal produced by the sensor when an object, e.g., hands, are placed beneath the faucet.Type: GrantFiled: January 19, 1990Date of Patent: December 24, 1991Inventors: Chang H. Lee, Young J. Kim
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Patent number: 5062164Abstract: An electronic water faucet including an infra-red sensor to detect the presence of an object near the faucet outlet. When an object is sensed an electric motor via a transmission operates a pilot valve to control a main water faucet valve of the piston type to allow water delivery.Type: GrantFiled: June 30, 1989Date of Patent: November 5, 1991Inventors: Chang H. Lee, Young J. Kim
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Patent number: 4953236Abstract: An automatic service water tap is disclosed in which a battery operated motor is provided for controlling a water supply valve in response to the presence or absence of an object positioned within the range of an infrared generating and detecting system mounted in the tap. The valve operates using only a small amount of electric power under the control of a circuit which draws no electric power once the valve is moved to its opened or closed condition. Thus the consumption of the electric power is minimized to almost zero and the valve can be utilized for a long period of time only with a small single battery.Type: GrantFiled: June 1, 1989Date of Patent: September 4, 1990Inventors: Chang H. Lee, Young J. Kim
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Patent number: 4886207Abstract: An automatic service water tap is disclosed in which a battery operated motor is provided for controlling a water supply valve in response to the presence or absence of an object positioned within the range of an infrared generating and detecting system mounted in the tap. The valve operates using only a small amount of electric power under the control of a circuit which draws no electric power once the valve is moved to its opened or closed condition. Thus the consumption of the electric power is minimized to almost zero and the valve can be utilized for a long period of time only with a small single battery.Type: GrantFiled: September 14, 1988Date of Patent: December 12, 1989Inventors: Chang H. Lee, Young J. Kim
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Patent number: 4248686Abstract: A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal.Type: GrantFiled: December 6, 1979Date of Patent: February 3, 1981Assignee: The United States of America as represented by the United States Department of EnergyInventors: Dimitri Gidaspow, Chang H. Lee, Darsh T. Wasan
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Patent number: 4224135Abstract: A filter for clarifying carbonaceous liquids containing finely divided solid particles of, for instance, unreacted coal, ash and other solids discharged from a coal liquefaction process is presented. The filter includes two passageways separated by a porous filter medium. In one preferred embodiment the filter medium is of tubular shape to form the first passageway and is enclosed within an outer housing to form the second passageway within the annulus. An electrode disposed in the first passageway, for instance along the tube axis, is connected to a source of high voltage for establishing an electric field between the electrode and the filter medium. Slurry feed flows through the first passageway tangentially to the surfaces of the filter medium and the electrode. Particles from the feed slurry are attracted to the electrode within the first passageway to prevent plugging of the porous filter medium while carbonaceous liquid filters into the second passageway for withdrawal.Type: GrantFiled: November 1, 1978Date of Patent: September 23, 1980Assignee: The United States of America as represented by the United States Department of EnergyInventors: Dimitri Gidaspow, Chang H. Lee, Darsh T. Wasan