Patents by Inventor Hyun Chul Cho
Hyun Chul Cho 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: 20150021003Abstract: A heat exchanger including a plurality of tubes disposed horizontally, a pair of vertical headers connecting the tubes, and at least one flow distribution baffle mounted to a header at one group of the plurality of tubes such that the flow distribution baffle is positioned between tubes of the one group. Each of the at least one flow distribution baffle is provided with at least one distribution hole allowing a refrigerant to pass therethrough. The heat exchanger prevents unbalanced distribution of the refrigerant when it operates as an evaporator of an outdoor unit.Type: ApplicationFiled: July 11, 2014Publication date: January 22, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun Chul CHO, Jun Woo Suh, Dong Hyun Kim, Gaku Hayase
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Patent number: 8926334Abstract: Provided is an injection simulation system and method. The system includes a syringe comprising an injection needle, a haptic unit which measures an insertion angle and insertion depth of the injection needle, and which comprises a motor unit that is driven by a haptic force corresponding to the measured insertion angle and insertion depth. The system also includes a control unit which calculates the haptic force corresponding to the insertion angle and the insertion depth, and transmits the calculated haptic force to the motor unit of the haptic unit.Type: GrantFiled: January 27, 2011Date of Patent: January 6, 2015Assignee: Korea Institute of Science and TechnologyInventors: Se Hyung Park, Lae Hyun Kim, Seung Jae Shin, Deuk Hee Lee, Wan Joo Park, Hyun Chul Cho, Hyun Jeong Kim
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Patent number: 8925476Abstract: A gas-containing unit and a water vehicle including the same are disclosed. The gas-containing unit includes a pair of reinforcement boards that are positioned in line with each other, a tube member that is positioned between the reinforcement boards and is capable of gas injection, and a support frame that is furnished along the outer circumference of the pair of reinforcement boards to connect the pair of reinforcement boards to each other. It is possible to prevent damage such as scratching and tearing of a soft tube material due to external shock, and to improve overall structural strength.Type: GrantFiled: July 9, 2009Date of Patent: January 6, 2015Inventor: Hyun Chul Cho
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Publication number: 20140352352Abstract: An outdoor heat exchanger has a total length of refrigerant flow passage in which a refrigerant flows along a refrigerant tube, and exchanges heat with outdoor air, the outdoor heat exchanger including a plurality of refrigerant tubes spaced apart from one another, a first and second header respectively coupled to both end portions of each of the refrigerant tubes, and a plurality of heat exchanging fins coupled to outer surfaces of the refrigerant tubes to widen a surface making contact with an outside, wherein a total length of a refrigerant flow passage in which a refrigerant flows along the refrigerant tube and exchanges heat with outdoor air is equal to or greater than about 1500 mm and equal to or less than about 6000 mm, in which range, the outdoor heat exchange achieves the optimum performance.Type: ApplicationFiled: May 28, 2014Publication date: December 4, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Woo HONG, Dong Suk Kim, Jung Ho Kim, Ha Na Kim, Jong Yeop Baek, Byung Han Lim, Hong Gi Cho, Dong Hyun Kim, Jun Woo Suh, Hyun Chul Cho, Yong Hwa Choi
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Publication number: 20140187697Abstract: Disclosed is an adhesive for bonding polyurethane and vulcanized rubber, and more specifically to an adhesive for bonding polyurethane and vulcanized rubber, which comprises: a first prepolymer, which is a reaction product of hydroxy-terminated polybutadiene polyol and isocyanate; a second prepolymer, which is a reaction product of polyether polyol, polyester polyol or a combination thereof, and isocyanate; and a radical initiator. The adhesive demonstrates excellent adhesive property even under harsh traveling conditions by using a chemical covalent-bond reaction of a body of a polyurethane tire and a vulcanized rubber tread material.Type: ApplicationFiled: June 7, 2013Publication date: July 3, 2014Inventors: Hyun-Chul Cho, Dai-Soo Lee, Dae-Woo Lee
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Publication number: 20140027167Abstract: Disclosed herein is a printed circuit board, including: a first insulating layer; a second insulating layer formed on the first insulating layer; a first circuit patterns embedded in the first insulating layer; a first via formed on a top of the first circuit pattern and embedded in the first insulating layer; a second circuit pattern formed on the first via and the first insulating layer and embedded in the second insulating layer; a second via formed on the top of the second circuit pattern and embedded in the second insulating layer; and a third circuit pattern formed on the second insulating layer.Type: ApplicationFiled: June 18, 2013Publication date: January 30, 2014Inventors: Min Sung Kim, Yeo Wool Kim, Kyung Tae Kim, Duck Young Maeng, Hyun Chul Cho
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Publication number: 20130333927Abstract: Disclosed herein is a method of manufacturing a printed circuit board, the method including: preparing a base substrate having one surface and the other surface; forming first signal metal layers including a first signal via penetrating the base substrate from one surface to the other surface and first heat dissipation metal layers on the base substrate; and forming a build-up layer on the base substrate by forming second heat dissipation metal layers including second signal metal layers including second signal vias stacked on the first signal via and a heat dissipation via penetrating the base substrate and the build-up layer in the thickness direction.Type: ApplicationFiled: June 12, 2013Publication date: December 19, 2013Inventors: Hyun Chul Cho, Kei Won, Young Min Yun, Hwa Sub Oh
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Patent number: 8586187Abstract: The present invention provides an adhesive comprising graphene oxide including at an epoxy group, a hydroxyl group or a carboxylic acid group; and an alkoxysilane compound including an amine group, an epoxy group, a carboxylic acid group, a hydroxyl group, or a thiol group. More specifically the adhesive may be used for bonding a polyurethane elastomer to an aluminum material, in which a silane compound and graphene oxide are applied to improve adhesive strength, compared to adhesives including the silane compound only. In addition, during a separation process for recycling after use, the aluminum material and polyurethane can be easily separated from each other by polyurethane pyrolysis through rapid heating due to microwave absorption properties of graphene oxide.Type: GrantFiled: July 12, 2011Date of Patent: November 19, 2013Assignee: Hyundai Motor CompanyInventors: Hyun Chul Cho, Seong Hoon Lee, Dai Soo Lee, Ki Ho Kang
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Patent number: 8493785Abstract: A non-volatile memory device includes a memory cell array which includes a plurality of non-volatile memory cells, a plurality of word lines, and a plurality of bit lines. The memory device further includes an internal data output line for outputting data read from the bit lines of the memory array, and a page buffer operatively connected between a bit line of the memory cell array and the internal data output line. The page buffer includes a sense node which is selectively connected to the bit line, a latch circuit having a latch node which is selectively connected to the sense node, a latch input path which sets a logic voltage of the latch node in the programming mode and the read mode, and a latch output path which is separate from the latch input path.Type: GrantFiled: May 7, 2012Date of Patent: July 23, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae
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Publication number: 20130079441Abstract: Disclosed is a rubber composition obtained by chemically blending rubber with a filler, particularly in which Latex rubber is directly blended with a starch solution obtained by gelatinizing starch in water. Herein, as a coupling agent between Latex rubber and starch, resorcinol-formaldehyde is used. By this, a vulcanized rubber compound is prepared. When resorcinol-formaldehyde is used as a coupling agent during the blending of the Latex rubber with the gelatinized starch solution, it is possible to solve the problem of tensile strength lowering caused by low affinity with rubber. Furthermore, it is possible to inhibit starch loss caused by high water-solubility, during the blending of starch in a liquid state. Also, the physical property of the vulcanized rubber compound can be varied according to the amount of the added coupling agent.Type: ApplicationFiled: November 16, 2011Publication date: March 28, 2013Applicants: Korea University of Technology and Education Industry-University Cooperation Foundation, Hyundai Motor CompanyInventors: Hyung Seok Kim, Hyun Chul Cho, Ur Ryong Cho, Seok Min Jang, Jong Hyuk Lim
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Publication number: 20120313694Abstract: An internal voltage generation circuit includes a pumping voltage generator including a plurality of pump units and configured to generate a final pumping voltage of a target voltage level, and an activation controller configured to control the number of activated pump units among the pump units based on the target voltage level.Type: ApplicationFiled: December 21, 2011Publication date: December 13, 2012Inventors: Yu-Jong Noh, Hyun-Chul Cho
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Publication number: 20120307560Abstract: A non-volatile memory device includes a memory cell array which includes a plurality of non-volatile memory cells, a plurality of word lines, and a plurality of bit lines. The memory device further includes an internal data output line for outputting data read from the bit lines of the memory array, and a page buffer operatively connected between a bit line of the memory cell array and the internal data output line. The page buffer includes a sense node which is selectively connected to the bit line, a latch circuit having a latch node which is selectively connected to the sense node, a latch input path which sets a logic voltage of the latch node in the programming mode and the read mode, and a latch output path which is separate from the latch input path.Type: ApplicationFiled: May 7, 2012Publication date: December 6, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae
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Publication number: 20120301858Abstract: Provided is an injection simulation system and method. The system includes a syringe comprising an injection needle, a haptic unit which measures an insertion angle and insertion depth of the injection needle, and which comprises a motor unit that is driven by a haptic force corresponding to the measured insertion angle and insertion depth. The system also includes a control unit which calculates the haptic force corresponding to the insertion angle and the insertion depth, and transmits the calculated haptic force to the motor unit of the haptic unit.Type: ApplicationFiled: January 27, 2011Publication date: November 29, 2012Inventors: Se Hyung Park, Lae Hyun Kim, Seung Jae Shin, Deuk Hee Lee, Wan Joo Park, Hyun Chul Cho, Hyun Jeong Kim
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Publication number: 20120288721Abstract: The present invention provides an adhesive comprising graphene oxide including at an epoxy group, a hydroxyl group or a carboxylic acid group; and an alkoxysilane compound including an amine group, an epoxy group, a carboxylic acid group, a hydroxyl group, or a thiol group. More specifically the adhesive may be used for bonding a polyurethane elastomer to an aluminum material, in which a silane compound and graphene oxide are applied to improve adhesive strength, compared to adhesives including the silane compound only. In addition, during a separation process for recycling after use, the aluminum material and polyurethane can be easily separated from each other by polyurethane pyrolysis through rapid heating due to microwave absorption properties of graphene oxide.Type: ApplicationFiled: July 12, 2011Publication date: November 15, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Hyun Chul CHO, Seong Hoon LEE, Dai Soo LEE, Ki Ho KANG
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Patent number: 8174888Abstract: In one aspect, a non-volatile memory device is provided which is operable in a programming mode and a read mode. The memory device includes a memory cell array which includes a plurality of non-volatile memory cells, a plurality of word lines, and a plurality of bit lines. The memory device further includes an internal data output line for outputting data read from the bit lines of the memory array, and a page buffer operatively connected between a bit line of the memory cell array and the internal data output line. The page buffer includes a sense node which is selectively connected to the bit line, a latch circuit having a latch node which is selectively connected to the sense node, a latch input path which sets a logic voltage of the latch node in the programming mode and the read mode, and a latch output path which is separate from the latch input path and which sets as logic voltage of the internal date output line according to the logic voltage of the latch node.Type: GrantFiled: April 1, 2010Date of Patent: May 8, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae
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Publication number: 20110223822Abstract: Safety clothes includes a fabric structure having a liner fabric and a cover fabric attached to each other, and a plurality of gas-containing capsules contained in compartments, which are defined between the liner fabric and the cover fabric. Gas is sealed inside the gas-containing capsules. The reliability and the freedom of motion of safety clothes are improved.Type: ApplicationFiled: July 27, 2009Publication date: September 15, 2011Inventor: Hyun Chul Cho
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Publication number: 20110155041Abstract: A gas-containing unit and a water vehicle including the same are disclosed. The gas-containing unit includes a pair of reinforcement boards that are positioned in line with each other, a tube member that is positioned between the reinforcement boards and is capable of gas injection, and a support frame that is furnished along the outer circumference of the pair of reinforcement boards to connect the pair of reinforcement boards to each other. It is possible to prevent damage such as scratching and tearing of a soft tube material due to external shock, and to improve overall structural strength.Type: ApplicationFiled: July 9, 2009Publication date: June 30, 2011Inventor: Hyun Chul Cho
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Publication number: 20100202204Abstract: In one aspect, a non-volatile memory device is provided which is operable in a programming mode and a read mode. The memory device includes a memory cell array which includes a plurality of non-volatile memory cells, a plurality of word lines, and a plurality of bit lines. The memory device further includes an internal data output line for outputting data read from the bit lines of the memory array, and a page buffer operatively connected between a bit line of the memory cell array and the internal data output line. The page buffer includes a sense node which is selectively connected to the bit line, a latch circuit having a latch node which is selectively connected to the sense node, a latch input path which sets a logic voltage of the latch node in the programming mode and the read mode, and a latch output path which is separate from the latch input path and which sets as logic voltage of the internal date output line according to the logic voltage of the latch node.Type: ApplicationFiled: April 1, 2010Publication date: August 12, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae
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Patent number: 7724575Abstract: In one aspect a non-volatile memory device is provided which is operable in a programming mode and a read mode. The memory device includes a memory cell array which includes a plurality of non-volatile memory cells, a plurality of word lines, and a plurality of bit lines. The memory device further includes an internal data output line for outputting data read from the bit lines of the memory array, and a page buffer operatively connected between a bit line of the memory cell array and the internal data output line. The page buffer includes a sense node which is selectively connected to the bit line, a latch circuit having a latch node which is selectively connected to the sense node, a latch input path which sets a logic voltage of the latch node in the programming mode and the read mode, and a latch output path which is separate from the latch input path and which sets as logic voltage of the internal date output line according to the logic voltage of the latch node.Type: GrantFiled: February 21, 2008Date of Patent: May 25, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae
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Patent number: 7675774Abstract: According to one aspect, a memory cell array includes a bit line connected to a plurality of nonvolatile memory cells, where the nonvolatile memory cells are selectively programmable in any one of at least first, second, third and fourth threshold voltage states, and where the first, second, third and fourth threshold voltage states correspond to four different data values defined by first and second bits. A page buffer circuit stores a logic value as main latch data and is responsive to a main latch signal to selectively flip the logic value of the main latch data according to a voltage level of the bit line. A sub-latch circuit stores a logic value as sub-latch data and is responsive to a sub-latch signal to selectively flip the logic value of the sub-latch data according to the voltage level of the bit line.Type: GrantFiled: December 12, 2008Date of Patent: March 9, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Soo Lee, Young-Ho Lim, Hyun-Chul Cho, Dong-Hyuk Chae