Patents by Inventor Sang Hyeon Choi
Sang Hyeon Choi 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: 20240118607Abstract: The inventive concept provides a substrate treating method. The substrate treating method includes pre-treating a substrate by cleaning the substrate; etching the substrate by supplying an etchant and heating a substrate supplied with the etchant; and post-treating the substrate after the etching the substrate, and wherein the pre-treating the substrate, the etching the substrate, and the post-treating the substrate are each performed in different chambers, a substrate on which the pre-treating the substrate is completed is transferred in a dry state to a chamber at which the etching the substrate is performed, and a substrate on which the etching the substrate is completed is transferred in a wetted state with a liquid to a chamber at which the post-treating the substrate is performed.Type: ApplicationFiled: March 14, 2023Publication date: April 11, 2024Applicant: SEMES CO.,LTD.Inventors: Hyun YOON, Ki Hoon CHOI, Seung Un OH, Young Ho PARK, Sang Hyeon RYU, Tae Hee KIM, Sang Gun LEE
-
Publication number: 20240097119Abstract: A method of manufacturing a composite electrode for an all-solid-state battery includes: preparing a precursor solution by mixing at least one solid electrolyte precursor and at least one polar solvent; stirring the precursor solution; preparing an electrode slurry by adding an active material to the stirred precursor solution; and heat-treating the electrode slurry and obtaining the composite electrode for the all-solid-state battery, wherein the composite electrode for the all-solid-state battery includes: the active material; and a coating layer disposed on the active material and including a solid electrolyte.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicants: HYUNDAI MOTOR COMPANY, Kia CorporationInventors: Sun Ho CHOI, Yong Jun JANG, In Woo SONG, Sang Heon LEE, Sang Soo LEE, So Young KIM, Seong Hyeon CHOI, Sa Heum KIM, Jae Min LIM
-
Patent number: 11932993Abstract: A paper coating composition, methods for making the same, and a coated paper. The paper coating composition comprises a solvent, an ethylene-(meth)acrylic acid copolymer, a basic compound, and a polycarbodiimide-based curing agent, wherein the polycarbodiimide-based curing agent has a carbodiimide group equivalent of about 150 to about 350. The coating of the coated paper likewise comprises an ethylene-(meth)acrylic acid copolymer crosslinked by N-acylurea groups.Type: GrantFiled: May 26, 2023Date of Patent: March 19, 2024Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.Inventors: Dong Hyun Woo, Sang Ha Son, Ji Hyeon Choi, Bu Yeon Hwang
-
Patent number: 7971606Abstract: A fuel tank and a cap device for the fuel tank. The fuel tank is connected to a fuel cell and includes a tank body having a fuel opening and a pin hole for maintaining an inside pressure, a floater positioned on a surface of the fuel stored in the tank body, and an air pipe connected to the pin hole and an upper part of the floater. The cap device includes a cap body having an inside transfer path for connecting an inlet opening for introducing the fuel and an outside transfer pipe, a fixed outer cap including a connector for fixing a discharge opening into which the transfer pipe is inserted, and an elastic opening/closing section in which the cap body is elastically compressible by the connector, and wherein the inside transfer path opens during the compression.Type: GrantFiled: March 9, 2006Date of Patent: July 5, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Eun Suk Cho, Jun Won Suh, Jong Ki Lee, Ri A Ju, Won Hyouk Jang, Dong Yun Lee, Sang Hyeon Choi, Jin Hong An
-
Patent number: 7846605Abstract: There are provided a pump of a noise suppression and vibration proof structure and a fuel cell system using the same. The fuel cell system includes at least one electricity generator including an electrolyte membrane and an anode and a cathode attached to the both surfaces of the electrolyte membrane to generate electricity energy by the electrochemical reaction between fuel containing hydrogen and oxidant supplied to the anode and the cathode, a fuel supplying unit including a pump for supplying the oxidant to the electricity generator, and a fixed frame that is provided on a lower frame and to which the pump is fixed. The pump is separated from the lower frame and is fixed to and combined with the fixed frame by the belt-shaped fixing member on the side surface of the fixing frame with a buffering member interposed. Therefore, it is possible to reduce the noise and vibration of the pump.Type: GrantFiled: March 7, 2006Date of Patent: December 7, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Sang Hyeon Choi, Jong Ki Lee, Won Hyouk Jang, Jun Won Suh, Dong Yun Lee, Ri A Ju, Eun Suk Cho, Jin Hong An
-
Patent number: 7836912Abstract: A fuel cartridge coupler to couple a cartridge body storing fuel to a fuel cell system, the fuel cartridge coupler including: a first coupling member arranged in the cartridge body; a second coupling member assembled with the first coupling member in the fuel cell system; a first nozzle assembly including a first fluid path to discharge fuel stored in the cartridge body, the fuel cartridge being elastically supported by the first coupling member and biased by the second coupling member to open and close the first fluid path; and a second nozzle assembly including a second fluid path to inject the fuel passing through the first fluid path into the fuel cell system, the second nozzle assembly being elastically supported by the second coupling member and biased by the first nozzle assembly to open and close the second fluid path.Type: GrantFiled: May 4, 2007Date of Patent: November 23, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Won-Hyouk Jang, Woong-Ho Cho, Sang-Hyeon Choi, Jong-Ki Lee, Hyung-Keun Lee
-
Patent number: 7757668Abstract: A method of controlling a flow rate of fuel in a fuel supply unit of a fuel cell system is provided. The fuel cell system includes a fuel pump, a revolution per minute (RPM) measuring unit, a microcomputer, and a power converter. The method of controlling the flow rate controls the fuel supply unit so as to supply the fuel to a reformer reforming the fuel to generate hydrogen or a stack generating electric energy through a reaction of the fuel and oxygen. The method of controlling the flow rate includes measuring an actual RPM of the fuel pump; comparing the actual RPM to a reference RPM of the fuel pump; and adjusting a driving voltage of the fuel pump on the basis of the comparison result.Type: GrantFiled: June 26, 2006Date of Patent: July 20, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Won-Hyouk Jang, Dong-Yun Lee, Sang-Hyeon Choi
-
Patent number: 7754362Abstract: A fuel cell system includes a stack for generating electrical energy through electro-chemical reaction between a fuel and oxygen and supplying the electrical energy to a load, a fuel supply unit for supplying the fuel to the stack, an oxygen supply unit for supplying the oxygen to the stack, and a comparator coupled to the stack to compare an electricity output value of the stack with a reference electricity output value corresponding to the load and to selectively electrically connect the stack to the load according to the electricity output value.Type: GrantFiled: March 8, 2006Date of Patent: July 13, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Ri-A Ju, Jin-Hong An, Ho-Jin Kweon, Jong-Ki Lee, Sang-Hyeon Choi
-
Patent number: 7678491Abstract: A stack for a fuel cell includes a first collecting plate having a first electric polarity, a second collecting plate having a second electric polarity different from the first electric polarity, and at least one electricity generator located between the collecting plates. The at least one electricity generator is for generating electric energy due to electrochemical reaction between hydrogen and oxygen to be collected by the collecting plates. Coupling members press the at least one electricity generator in an airtight connection between the collecting plates. A terminal member protrudes from the second collecting plate and is electrically connected to the first collecting plate and insulated from the second collecting plate, such that the terminal member is used as a first terminal having the first polarity. The second collecting plate or a second terminal member may also be used as a second terminal having the second polarity.Type: GrantFiled: March 8, 2006Date of Patent: March 16, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Eun Suk Cho, Jun Won Suh, Jong Ki Lee, Ri A Ju, Won Hyouk Jang, Dong Yun Lee, Sang Hyeon Choi, Jin Hong An
-
Patent number: 7656533Abstract: A flowing device for an optics-based methanol sensor includes an inner housing that surrounds the optics-based methanol sensor, an outer housing that surrounds the inner housing, a flow channel in the inner housing formed on a totally reflecting surface of the optics-based methanol sensor, a fuel inlet that is formed through the inner and outer housings and supplies liquid fuel to the flow channel, and a fuel outlet that is formed through the inner and outer housings and discharges the liquid fuel that has passed through the flow channel to an outside of the outer housing.Type: GrantFiled: December 20, 2006Date of Patent: February 2, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Sang-kyun Kang, Dong-kee Sohn, Woong-ho Cho, Sang-hyeon Choi, Seok-rak Chang
-
Patent number: 7611568Abstract: A liquid-gas separator for a direct liquid feed fuel cell includes: a housing having an open hole; a gas extracting membrane that covers the open hole and transmits only the gas; a liquid extracting member that defines a first chamber that contacts the gas extracting membrane and a second chamber that does not contact the gas extracting membrane, and selectively transmits the liquid in the first chamber to the second chamber; an inlet that guides the liquid and the gas into the housing; and an outlet that is connected to the second chamber and guides the liquid in the second chamber to the outside.Type: GrantFiled: June 2, 2006Date of Patent: November 3, 2009Assignee: Samsung SDI Co., Ltd.Inventors: Sang-kyun Kang, Dong-kee Sohn, Woong-ho Cho, Sang-hyeon Choi
-
Patent number: 7484590Abstract: A fuel cell system with a muffler to reduce noise generated while supplying air to a fuel cells disclosed. One embodiment of the fuel cell system includes an air feeder to supply air; an electric generator to generate electricity through an electrochemical reaction between air and fuel; and a muffler provided in one end of the air feeder. The muffler includes a first pipe and a second pipe which are different in length from each other. The muffler has a relatively small structure, so that limitation in a mounting space can be decreased and a more compact fuel cell system can be realized. Also, even if there are considerable noise components at two or more frequencies, the mufflers corresponding to the respective frequencies are connected in series, thereby reducing the noise.Type: GrantFiled: January 24, 2007Date of Patent: February 3, 2009Assignee: Samsung SDI Co., Ltd.Inventors: In Youl Jeon, Sang Hyeon Choi, Joon Soo Bae, Min Jung Oh
-
Publication number: 20070261485Abstract: A flowing device for an optics-based methanol sensor includes an inner housing that surrounds the optics-based methanol sensor, an outer housing that surrounds the inner housing, a flow channel in the inner housing formed on a totally reflecting surface of the optics-based methanol sensor, a fuel inlet that is formed through the inner and outer housings and supplies liquid fuel to the flow channel, and a fuel outlet that is formed through the inner and outer housings and discharges the liquid fuel that has passed through the flow channel to an outside of the outer housing.Type: ApplicationFiled: December 20, 2006Publication date: November 15, 2007Applicant: Samsung SDI Co., Ltd.Inventors: Sang-kyun Kang, Dong-kee Sohn, Woong-ho Cho, Sang-hyeon Choi, Seok-rak Chang
-
Publication number: 20070259246Abstract: A fuel cartridge coupler to couple a cartridge body storing fuel to a fuel cell system, the fuel cartridge coupler including: a first coupling member arranged in the cartridge body; a second coupling member assembled with the first coupling member in the fuel cell system; a first nozzle assembly including a first fluid path to discharge fuel stored in the cartridge body, the fuel cartridge being elastically supported by the first coupling member and biased by the second coupling member to open and close the first fluid path; and a second nozzle assembly including a second fluid path to inject the fuel passing through the first fluid path into the fuel cell system, the second nozzle assembly being elastically supported by the second coupling member and biased by the first nozzle assembly to open and close the second fluid path.Type: ApplicationFiled: May 4, 2007Publication date: November 8, 2007Inventors: Won-Hyouk Jang, Woong-Ho Cho, Sang-Hyeon Choi, Jong-Ki Lee, Hyung-Keun Lee
-
Publication number: 20070180992Abstract: A liquid-gas separator for a direct liquid feed fuel cell includes: a housing having an open hole; a gas extracting membrane that covers the open hole and transmits only the gas; a liquid extracting member that defines a first chamber that contacts the gas extracting membrane and a second chamber that does not contact the gas extracting membrane, and selectively transmits the liquid in the first chamber to the second chamber; an inlet that guides the liquid and the gas into the housing; and an outlet that is connected to the second chamber and guides the liquid in the second chamber to the outside.Type: ApplicationFiled: June 2, 2006Publication date: August 9, 2007Applicant: Samsung SDI Co., Ltd.Inventors: Sang-kyun Kang, Dong-kee Sohn, Woong-ho Cho, Sang-hyeon Choi
-
Publication number: 20070178352Abstract: A fuel cell system with a muffler to reduce noise generated while supplying air to a fuel cell is disclosed. One embodiment of the fuel cell system includes an air feeder to supply air; an electric generator to generate electricity through an electrochemical reaction between air and fuel; and a muffler provided in one end of the air feeder. The muffler includes a first pipe and a second pipe which are different in length from each other. The muffler has a relatively small structure, so that limitation in a mounting space can be decreased and a more compact fuel cell system can be realized. Also, even if there are considerable noise components at two or more frequencies, the mufflers corresponding to the respective frequencies are connected in series, thereby reducing the noise.Type: ApplicationFiled: January 24, 2007Publication date: August 2, 2007Inventors: In Youl Jeon, Sang Hyeon Choi, Joon Soo Bae, Min Jung Oh
-
Publication number: 20060292011Abstract: A method of controlling a flow rate of fuel in a fuel supply unit of a fuel cell system is provided. The fuel cell system includes a fuel pump, a revolution per minute (RPM) measuring unit, a microcomputer, and a power converter. The method of controlling the flow rate controls the fuel supply unit so as to supply the fuel to a reformer reforming the fuel to generate hydrogen or a stack generating electric energy through a reaction of the fuel and oxygen. The method of controlling the flow rate includes measuring an actual RPM of the fuel pump; comparing the actual RPM to a reference RPM of the fuel pump; and adjusting a driving voltage of the fuel pump on the basis of the comparison result.Type: ApplicationFiled: June 26, 2006Publication date: December 28, 2006Inventors: Won-Hyouk Jang, Dong-Yun Lee, Sang-Hyeon Choi
-
Publication number: 20060228617Abstract: A fuel cell stack includes a first separator and a second separator, each separator having raised portions and channel portions on a first side and a second side, the channel portions on the first side being opposite the raised portions on the second side and the channel portions on the second side being opposite the raised portions on the first side. The stack also includes a membrane-electrode assembly located between the first separator and the second separator, and closely contacting the raised portions of the first side of the first separator and the raised portions of the second side of the second separator.Type: ApplicationFiled: March 23, 2006Publication date: October 12, 2006Inventors: Jin-Hong An, Ri-A Ju, Sang-Hyeon Choi, Eun-Suk Cho, Jong-Ki Lee, Jun-Won Suh, Dong-Yun Lee, Won-Hyouk Jang
-
Publication number: 20060204804Abstract: A fuel cell system includes a stack for generating electrical energy through electrochemical reaction between a fuel and oxygen and supplying the electrical energy to a load, a fuel supply unit for supplying the fuel to the stack, an oxygen supply unit for supplying the oxygen to the stack, and a comparator coupled to the stack to compare an electricity output value of the stack with a reference electricity output value corresponding to the load and to selectively electrically connect the stack to the load according to the electricity output value.Type: ApplicationFiled: March 8, 2006Publication date: September 14, 2006Inventors: Ri-A Ju, Jin-Hong An, Ho-Jin Kweon, Jong-Ki Lee, Sang-Hyeon Choi