Patents by Inventor Sangkyun Kang
Sangkyun Kang 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: 8669015Abstract: A solid-state fuel cell includes: an anode; an anode side chemical electrolyte protection layer disposed on the anode; a hydrogen ion conductive solid oxide film disposed on the anode side chemical electrolyte protection layer; a cathode side chemical electrolyte protection layer disposed on the hydrogen ion conductive solid oxide film; and a cathode disposed on the cathode side chemical electrolyte protection layer.Type: GrantFiled: April 2, 2009Date of Patent: March 11, 2014Assignees: Samsung Electronics Co., Ltd., The Board of Trustees of The Leland Stanford Junior UniversityInventors: SangKyun Kang, Joonhyung Shim, Friedrich B. Prinz, Turgut M. Gür
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Patent number: 7886429Abstract: A method is provided for producing a measuring transducer in order to transform at least one physical variable into at least one electric variable. A plurality of planar, insulating and conductive layers are respectively structured according to predefineable models which are adapted to each other and which are assembled in order to form a multi-layered arrangement.Type: GrantFiled: December 8, 2004Date of Patent: February 15, 2011Assignees: ABB AG, Stanford UniversityInventors: Peter Krippner, Fritz B. Prinz, Sangkyun Kang, Tibor Fabian
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Publication number: 20100255406Abstract: A solid-state fuel cell includes: an anode; an anode side chemical electrolyte protection layer disposed on the anode; a hydrogen ion conductive solid oxide film disposed on the anode side chemical electrolyte protection layer; a cathode side chemical electrolyte protection layer disposed on the hydrogen ion conductive solid oxide film; and a cathode disposed on the cathode side chemical electrolyte protection layer.Type: ApplicationFiled: April 2, 2009Publication date: October 7, 2010Applicants: Samsung Electronics Co., Ltd., The Board of Trustees of the Leland Standford Junior UniversityInventors: SangKyun Kang, Joonhyung Shim, Friedrich B. Prinz, Turuot M. Gor
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Patent number: 7685879Abstract: The disclosure relates to a differential pressure transducer unit comprising an over-load protection system which is used to measure low differential pressure in liquids and gases under high static pressure load which can be connected to flanges on the working pressure lines. The differential pressure transducer unit consists of a planar multi-layered arrangement comprising layers which are conductive, insulating and which are insulated from each other, whereby the insulating and conductive layers comprises recesses which at least partially cover each other, wherein the measuring mechanism and the measuring value processing means are accommodated. At least one of the layers is a functional component of the over-load protection system.Type: GrantFiled: December 8, 2004Date of Patent: March 30, 2010Assignees: ABB AG, Stanford UniversityInventors: Sangkyun Kang, Wolfgang Scholz, Peter Krippner, Dieter Binz, Tibor Fabian, Fritz B. Prinz
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Publication number: 20080257054Abstract: The disclosure relates to a differential pressure transducer unit comprising an over-load protection system which is used to measure low differential pressure in liquids and gases under high static pressure load which can be connected to flanges on the working pressure lines. The differential pressure transducer unit consists of a planar multi-layered arrangement comprising layers which are conductive, insulating and which are insulated from each other, whereby the insulating and conductive layers comprises recesses which at least partially cover each other, wherein the measuring mechanism and the measuring value processing means are accommodated. At least one of the layers is a functional component of the over-load protection system.Type: ApplicationFiled: December 8, 2004Publication date: October 23, 2008Applicant: ABB PATENT GMBHInventors: Sangkyun Kang, Wolfgang Scholz, Peter Krippner, Dieter Binz, Tibor Fabian, Fritz B. Prinz
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Patent number: 7431838Abstract: An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.Type: GrantFiled: August 9, 2006Date of Patent: October 7, 2008Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Motor Co., LtdInventors: Sangkyun Kang, Yong-Il Park, Friedrich B. Prinz, Suk-Won Cha, Yuji Saito, Ali Farvid, Pei-Chen Su
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Patent number: 7343770Abstract: A system and process for stamping parts having tolerances below 1000 nanometers. The inventive system and process is particularly suited for producing optoelectronic parts. The system includes a stamping press and one or a progression of stamping stations for supporting a punch and die. The stamping stations are designed to maintain substantial alignment of the punch and die with minimal moving components. The stamping station includes a shaft for rigidly guiding the punch to the die. The stamping press is capable of providing the punch with the necessary force to perform the stamping operations. The system includes an interface system for interfacing the force of the press with the punch, while simultaneously structurally decoupling the press from the punch. The system also includes a locating sub-plate, for locating the stamping station in alignment relative to each other, and means for in-line machine stock material before entry into the stamping stations.Type: GrantFiled: July 15, 2003Date of Patent: March 18, 2008Assignee: Nanoprecision Products, Inc.Inventors: Michael K Barnoski, David Cohen, Dan Harris, Sangkyun Kang, Anthony Levi, Miguel Pinilla, Fritz Prinz, Alex Tarasyuk
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Publication number: 20080047127Abstract: The invention relates to a method for producing a measuring transducer in order to transform at least one physical variable into at least one electric variable. According to the invention, a plurality of planar, insulating and conductive layers (21-26 and 11-17) are respectively structured according to predefineable models which are adapted to each other and which are assembled in order to form a multi-layered arrangement.Type: ApplicationFiled: December 8, 2004Publication date: February 28, 2008Applicant: ABB PATENT GMBHInventors: Peter Krippner, Sangkyun Kang, Tibor Fabian, Fritz Prinz
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Publication number: 20060273004Abstract: An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.Type: ApplicationFiled: August 9, 2006Publication date: December 7, 2006Inventors: Sangkyun Kang, Young-Il Park, Friedrich Prinz, Suk-Won Cha, Yuji Saito, Ali Farvid, Pei-Chen Su
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Patent number: 7108813Abstract: An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.Type: GrantFiled: March 25, 2005Date of Patent: September 19, 2006Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Giken Kogyo Kabushiki KaishaInventors: Sangkyun Kang, Yong-Il Park, Friedrich B. Prinz, Suk-Won Cha, Yuji Saito, Ali Farvid, Pei-Chen Su
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Publication number: 20050242022Abstract: An improved two-step replication process for fabrication of porous metallic membranes is provided. A negative of a porous non-metallic template is made by infiltration of a liquid precursor into the template, curing the precursor to form a solid negative, and removing the template to expose the negative. Metal is deposited to surround the exposed negative. Removal of the negative provides a porous metallic membrane having pores which replicate the pores of the original template membrane. The negative is kept immersed in a liquid at all times between removing the template and depositing the metal. This immersion eliminates damage to the negative that would be incurred in drying the negative out between these processing steps. Another aspect of the invention is metallic membranes prepared according to the preceding method. For example, metallic membranes having pores smaller on one side than on the other side of the membrane are provided.Type: ApplicationFiled: March 25, 2005Publication date: November 3, 2005Inventors: Sangkyun Kang, Yong-Il Park, Friedrich Prinz, Suk-Won Cha, Yuji Saito, Ali Farvid, Pei-Chen Su
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Patent number: 6866478Abstract: The present invention provides a miniature gas turbine engine for power generation. The engine has a highly integrated unitary rotor shaft where turbine, compressor and shaft are made in one piece in one fabrication process. The turbine and compressor are positioned back to back on the shaft in an overhung configuration, allowing the front bearings to be located in the cold zone of the engine. Preferably, the Mold SDM fabrication technique is utilized to make the unitary rotor shaft in one monolithic part out of ceramics such as silicon nitride, eliminating the need for post process assembly while strengthening the integrity, reliability, and performance of the unitary rotor shaft. Integrated with a permanent magnet in the unitary rotor shaft, the miniature gas turbine engine can generate electric power of 1 kW or less. Additionally, the axial length of the miniature gas turbine engine is about 100 mm or less.Type: GrantFiled: May 6, 2003Date of Patent: March 15, 2005Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Giken Kogyo Kabushiki KaishaInventors: Tibor Fabian, Frank Holman, Sangkyun Kang, Hao-Chih Liu, Minoru Matsunaga, Fritz B. Prinz, Hideaki Tsuru
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Publication number: 20040091215Abstract: A system and process for stamping parts having tolerances below 1000 nanometers. The inventive system and process is particularly suited for producing optoelectronic parts. The system includes a stamping press and one or a progression of stamping stations for supporting a punch and die. The stamping stations are designed to maintain substantial alignment of the punch and die with minimal moving components. The stamping station includes a shaft for rigidly guiding the punch to the die. The stamping press is capable of providing the punch with the necessary force to perform the stamping operations. The system includes an interface system for interfacing the force of the press with the punch, while simultaneously structurally decoupling the press from the punch. The system also includes a locating sub-plate, for locating the stamping station in alignment relative to each other, and means for in-line machine stock material before entry into the stamping stations.Type: ApplicationFiled: July 15, 2003Publication date: May 13, 2004Inventors: Michael K. Barnoski, David Cohen, Dan Harris, Sangkyun Kang, Anthony Levi, Miguel Pinilla, Fritz Prinz, Alex Tarasyuk
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Patent number: 6692222Abstract: In a micro gas turbine engine, a capacitive sensor is used for measuring a tip clearance of a radial compressor section thereof, and an actuator is used for axially displacing a rotor shaft in response to an output from the capacitive sensor. Because the capacitive change gives an accurate measure of the size of the tip clearance, a particularly high sensitivity can be achieved in parts where the tip clearance is small, thereby providing a highly precise tip clearance control.Type: GrantFiled: June 14, 2002Date of Patent: February 17, 2004Assignees: The Board of Trustees of the Leland Stanford Junior University, Honda Giken Kogyo Kabushiki KaishaInventors: Friedrich B. Prinz, Sangkyun Kang, Tibor Fabian, Georg Brasseur, Jordan Tresser, Francis Holman, Hideaki Tsuru, Minoru Matsunaga
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Publication number: 20040016239Abstract: The present invention provides a miniature gas turbine engine for power generation. The engine has a highly integrated unitary rotor shaft where turbine, compressor and shaft are made in one piece in one fabrication process. The turbine and compressor are positioned back to back on the shaft in an overhung configuration, allowing the front bearings to be located in the cold zone of the engine. Preferably, the Mold SDM fabrication technique is utilized to make the unitary rotor shaft in one monolithic part out of ceramics such as silicon nitride, eliminating the need for post process assembly while strengthening the integrity, reliability, and performance of the unitary rotor shaft. Integrated with a permanent magnet in the unitary rotor shaft, the miniature gas turbine engine can generate electric power of 1 kW or less. Additionally, the axial length of the miniature gas turbine engine is about 100 mm or less.Type: ApplicationFiled: May 6, 2003Publication date: January 29, 2004Inventors: Tibor Fabian, Frank Holman, Sangkyun Kang, Hao-Chih Liu, Minoru Matsunaga, Fritz B. Prinz, Hideaki Tsuru
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Publication number: 20030215323Abstract: In a micro gas turbine engine, a capacitive sensor is used for measuring a tip clearance of a radial compressor section thereof, and an actuator is used for axially displacing a rotor shaft in response to an output from the capacitive sensor. Because the capacitive change gives an accurate measure of the size of the tip clearance, a particularly high sensitivity can be achieved in parts where the tip clearance is small, thereby providing a highly precise tip clearance control.Type: ApplicationFiled: June 14, 2002Publication date: November 20, 2003Inventors: Friedrich B. Prinz, Sangkyun Kang, Tibor Fabian, Georg Brasseur, Jordan Tresser, Francis Holman, Hideki Tsuru, Minoru Matsunaga