Patents by Inventor Chi-Seung Lee

Chi-Seung 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).

  • Publication number: 20200309121
    Abstract: An electric hydraulic pump for a transmission includes: a motor including a motor cover, a motor case coupled with the motor cover, and a stator and a rotor disposed within the motor cover and the motor case; and a pump including a pump case forming a pump chamber, and a gear rotor which is disposed within the pump chamber, connected with the rotor through a motor shaft and receives rotational power of the motor. In particular, a plurality of oil circulation holes are formed in the motor cover and a connecting hole is formed in the motor cover corresponding to the pump case, and an oil flow channel is formed within the pump case for connecting the connecting hole and an oil inlet of the pump chamber.
    Type: Application
    Filed: July 17, 2019
    Publication date: October 1, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sung Wook JANG, Kihyup KIM, Woo Jung KIM, June Ho LEE, Jin Seung LIM, Seungwan NOH, Youngho MOON, Taegeun KIM, Jaeyeol YUN, Jungwook LEE, Chulwan PARK, Chi Hun CHO, Gyu Chull DOH, Kyoo Ho LEE, Hyun Chul KIM, Joung Chul KIM, Hyun Duk CHANG, Jin Hee LEE, Yongho JUNG, Chang Yeon CHO, Yun Seok SUNG, Hyeonjin KIM, Joo Hang LEE
  • Patent number: 10727503
    Abstract: A separator for a fuel cell includes a channel having a passage that is a flow path of a reaction gas, a manifold part formed at a peripheral of the channel and communicating with the passage such that the reaction gas is introduced into and discharged from the channel, and a connector connecting the channel and the manifold part such that the reaction gas flows between the channel and the manifold part. The manifold part includes an inlet manifold through which the reaction gas is introduced into the channel and formed at a lower portion of the channel, and an outlet manifold configured to discharge the reaction gas from the channel to an outside of the fuel cell and formed at an upper portion of the channel.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: July 28, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Jun Ko, Chi Seung Lee, Seung Ah Yu, Young Woo Noh
  • Patent number: 10607776
    Abstract: A multilayer ceramic electronic component includes a ceramic body in which dielectric layers and internal electrodes are alternately stacked. The dielectric layers contain at least one dielectric grain having a ratio of a long axis to a short axis that is 3.5 or more. The internal electrodes contain a ceramic component containing a grain growth adjusting ingredient for dielectric grains. Each dielectric layer includes interfacial portions adjacent to the internal electrodes and a central portion disposed between the interfacial portions, and concentrations of the grain growth adjusting ingredient in the interfacial portions and the central portion are different from each other.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kum Jin Park, Chang Hak Choi, Jong Hoon Yoo, Doo Young Kim, Min Gi Sin, Chi Hwa Lee, Chul Seung Lee, Jong Han Kim
  • Publication number: 20190242744
    Abstract: The present invention provides an online diagnostic/prognostic system, for a rotation device, which does not require a diagnostic apparatus to be transferred and enables easy transmission of waveform data to a remote site. To this end, the present invention comprises: a vibration sensor mounted on a rotation device; a data analyzing unit connected to the vibration sensor and for extracting valid data, which is required for the diagnosis of the rotation device, from data obtained from the vibration sensor; and a diagnostic/prognostic server for diagnosing for abnormalities in the rotation device by means of comparing the valid data and prestored data. Therefore, the present invention does not require an apparatus for measuring vibrations to be transferred and enables transmission of waveform data to a remote cite, thereby enabling more efficient diagnosis for a rotation device and preventing abnormalities in the rotation device.
    Type: Application
    Filed: August 29, 2017
    Publication date: August 8, 2019
    Inventors: Yang Seok Kim, Dae Woong KIM, Bum Nyun KIM, Ji In KIM, Nam Woo CHOI, Jae Hun SHIN, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Hee Seung CHANG, You Soo SHIN
  • Publication number: 20190195249
    Abstract: Method for diagnosing a pneumatic control valve by using a positioner model includes: establishing relational expression for outputting valve stem displacement according to control pressure, the relational expression including parameters for the characteristics of a positioner, an actuator, and a valve, determining initial parameter value by adjusting the values of the parameters until the difference between a measured value for a normal operation of the pneumatic control valve and output value obtained by the relational expression is smaller than predetermined error limit, determining diagnostic parameter value by adjusting the values of the parameters until the difference between a measured value for a diagnostic operation of the pneumatic control valve and an output value obtained by the relational expression is smaller than a predetermined error limit, and comparing the initial parameter value and the diagnostic parameter value so as to determine whether the pneumatic control valve has abnormality.
    Type: Application
    Filed: August 30, 2017
    Publication date: June 27, 2019
    Inventors: Yang Seok KIM, Dae Woong KIM, Bum Nyun KIM, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Ji In KIM, Nam Woo CHOI, Yong Hoon PARK, Hee Seung CHANG, You Soo SHIN
  • Publication number: 20190188345
    Abstract: The present invention provides a method for diagnosing a rotation device by means of a rotor-bearing-foundation model, the method characterized by utilizing the characteristics of a simulation rotor system. To this end, the present invention comprises the steps of: simulating a rotation device as a rotor system; forming a mathematical model for the rotor system; estimating the state of the rotation device by means of the mathematical model and a vibration measurement value of the rotation device; and diagnosing for abnormalities in the rotation device from the changes in an estimated value. Therefore, since a rotation device is diagnosed for abnormalities by means of forming a mathematical model for a rotor system, the present invention enables more accurate diagnosis of the rotation device.
    Type: Application
    Filed: August 29, 2017
    Publication date: June 20, 2019
    Inventors: Yang Seok Kim, Dae Woong KIM, Bum Nyun KIM, Young Sheop PARK, Chi Yong PARK, Jong Seog KIM, Hyoung Kyun KIM, Byoung Oh LEE, Ji In KIM, Nam Woo CHOI, Ji Soo RYU, Hee Seung CHANG, You Soo SHIN
  • Patent number: 10305123
    Abstract: A fuel cell separator with a gasket for improved sealing is provided. The fuel cell separator with a gasket is capable of improving the contact pressure of a cooling surface-side airtight line by additionally forming a sub-airtight line in a region in which a gas aperture is not formed at a cooling surface-side position that corresponds to the cooling surface-side airtight line of the separator.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: May 28, 2019
    Assignee: Hyundai Motor Company
    Inventors: Seong Il Heo, Chi Seung Lee, Yoo Chang Yang
  • Patent number: 10147964
    Abstract: A gasket for a fuel cell having plurality of protrusions coupled to a surface of a separation plate of the fuel cell and protruding from an air-tight line blocking movement between materials flowing along a plurality of manifolds, in a length direction of the separation plate is provided. In particular, each of the plurality of protrusions includes a groove having a set width.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 4, 2018
    Assignee: Hyundai Motor Company
    Inventors: Seong Il Heo, Yoo Chang Yang, Chi Seung Lee
  • Patent number: 10128479
    Abstract: A method for manufacturing a separator of a fuel cell stack includes: forming a gasket on the separator of the fuel cell stack; masking a surface of the separator except for a region of the surface of the separator on which the gasket is formed; and inserting the partially masked separator into a chamber to cross-link the gasket.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: November 13, 2018
    Assignee: Hyundai Motor Company
    Inventors: Chi Seung Lee, Seong Il Heo, Yoo Chang Yang, Suk Min Baeck
  • Publication number: 20180301716
    Abstract: The method for coating a separator for a fuel cell according to one form of the present disclosure includes the steps of: vaporizing a metal nitride precursor to obtain a precursor gas; introducing a metal nitride coating layer-forming gas containing the precursor gas and a reactive gas to a reaction chamber; applying a voltage to the reaction chamber so that the precursor gas and reactive gas may be converted into a plasma state, thereby forming a metal nitride coating layer on a substrate; introducing a carbon layer-forming gas containing a carbonaceous gas to the reaction chamber; and applying a voltage to the reaction chamber so that the carbonaceous gas may be converted into a plasma state, thereby forming a carbon coating layer on the metal nitride coating layer.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Kwang Hoon CHOI, Woong Pyo HONG, Chi Seung LEE, Hyun Dal PARK, Bokyung KIM, Jungyeon PARK, In Woong LYO, Jiyoun SEO
  • Publication number: 20180166705
    Abstract: A separator for a fuel cell includes a channel having a passage that is a flow path of a reaction gas, a manifold part formed at a peripheral of the channel and communicating with the passage such that the reaction gas is introduced into and discharged from the channel, and a connector connecting the channel and the manifold part such that the reaction gas flows between the channel and the manifold part. The manifold part includes an inlet manifold through which the reaction gas is introduced into the channel and formed at a lower portion of the channel, and an outlet manifold configured to discharge the reaction gas from the channel to an outside of the fuel cell and formed at an upper portion of the channel.
    Type: Application
    Filed: November 1, 2017
    Publication date: June 14, 2018
    Inventors: Jae Jun KO, Chi Seung LEE, Seung Ah YU, Young Woo NOH
  • Publication number: 20180166730
    Abstract: A unit cell for a fuel cell includes a separator having a reaction area located to correspond to an anode or a cathode of a membrane electrode assembly, an inlet manifold, which is provided outside the reaction area and into which a reaction gas is introduced that is to be supplied to the reaction area, and an outlet manifold which is spaced apart from the inlet manifold and through which the reaction gas that passed through the reaction area is discharged. The unit cell has a porous passage provided between the separator and the membrane electrode assembly arranged to be adjacent to the separator and having a passage configured to guide the reaction gas introduced into the inlet manifold such that the reaction gas is discharged to the outlet manifold via the reaction area. The unit cell has a protrusion protruding from the separator toward the porous passage, which is fixed to the separator by the protrusion through a pressing force, which is generated due to deformation by a compressive force.
    Type: Application
    Filed: October 11, 2017
    Publication date: June 14, 2018
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chi Seung Lee, Young Woo Noh, Seong Hak Kim, Seung Ah Yu, Jae Jun Ko, Jang Ho Jo
  • Publication number: 20180076471
    Abstract: A fuel cell includes a membrane electrode assembly including a first electrode layer formed at one side of an electrolyte layer and a second electrode layer formed at another side of the electrolyte layer, a metallic forming body compressed after being form-molded, the metallic forming body being stacked on at least one of the first and second electrode layers, and the metallic forming body supplying reaction gas to at least one of the electrode layers through inner pores, and a bipolar plate stacked on the metallic forming body.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 15, 2018
    Inventors: Chi Seung LEE, Young Woo NOH, Seung Ah YU, Jae Jun KO, Jang Ho JO
  • Publication number: 20170141409
    Abstract: A method for coating a separator for a fuel cell is provided that includes vaporizing a metal carbide precursor to obtain a precursor gas; introducing a metal carbide coating layer-forming gas including the precursor gas in a reaction chamber; and applying a voltage to the reaction chamber so that the precursor gas is changed into a plasma state, thereby forming a metal carbide coating layer on either surface or both surfaces of a substrate. In this case, the metal carbide precursor may include a compound having a substituted or non-substituted cyclopentadienyl group.
    Type: Application
    Filed: December 10, 2015
    Publication date: May 18, 2017
    Applicants: Hyundai Motor Company, Universitat Zu Koln
    Inventors: Bokyung Kim, Yoo Chang Yang, Suk Min Baeck, Chi Seung Lee, Kwang Hoon Choi, In Woong Lyo, Jiyoun Seo, Sanjay Mathur, Yakup Gonullu, Andreas Mettenboerger, Thomas Fischer
  • Publication number: 20170018786
    Abstract: A fuel cell separator with a gasket for improved sealing is provided. The fuel cell separator with a gasket is capable of improving the contact pressure of a cooling surface-side airtight line by additionally forming a sub-airtight line in a region in which a gas aperture is not formed at a cooling surface-side position that corresponds to the cooling surface-side airtight line of the separator.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 19, 2017
    Inventors: Seong Il Heo, Chi Seung Lee, Yoo Chang Yang
  • Publication number: 20170012263
    Abstract: A method for manufacturing a separator of a fuel cell stack includes: forming a gasket on the separator of the fuel cell stack; masking a surface of the separator except for a region of the surface of the separator on which the gasket is formed; and inserting the partially masked separator into a chamber to cross-link the gasket.
    Type: Application
    Filed: June 29, 2016
    Publication date: January 12, 2017
    Inventors: Chi Seung Lee, Seong Il Heo, Yoo Chang Yang, Suk Min Baeck
  • Patent number: 9496563
    Abstract: A slip sheet for a fuel cell stack that includes a plurality of spaced fluid channel support protrusions protruding from a main body, at portions which face fluid channel protrusions of a separator plate in such a manner that the spaced fluid channel support protrusions come into contact with the fluid channel protrusions of the separator plate.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 15, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Seong Il Heo, Yoo Chang Yang, Jun Ho Jang, Chi Seung Lee
  • Patent number: 9472815
    Abstract: A separator for a fuel cell and a method for manufacturing the same comprise two sheets of metal plates integrally formed to minimize contact resistance between an upper metal plate and a lower metal plate. The method for manufacturing the separator includes steps of preparing an upper metal plate and a lower metal plate, each plate having opposing main sides, and applying a coating liquid containing a polymer composite material on both sides of the upper and lower metal plates, to form first and second composite material layers on both sides of the upper plates and third and fourth composite material layers on both sides of the lower plates. The method further includes stacking the upper metal plate on the lower metal plate, before drying the respective composite material layers, and integrally bonding the second composite material layer and the third composite material layer to form a single intermediate composite material layer.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: October 18, 2016
    Assignees: HYUNDAI MOTOR COMPANY, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Chi Seung Lee, Seong Il Heo, Suk Min Baeck, Jun Ho Jang, Sang Mun Jin, Yoo Chang Yang, Kyung Min Kim, Yang Bok Lee, Dae Soon Lim
  • Publication number: 20160248103
    Abstract: The method for coating a separator for a fuel cell according to one form of the present disclosure includes the steps of: vaporizing a metal nitride precursor to obtain a precursor gas; introducing a metal nitride coating layer-forming gas containing the precursor gas and a reactive gas to a reaction chamber; applying a voltage to the reaction chamber so that the precursor gas and reactive gas may be converted into a plasma state, thereby forming a metal nitride coating layer on a substrate; introducing a carbon layer-forming gas containing a carbonaceous gas to the reaction chamber; and applying a voltage to the reaction chamber so that the carbonaceous gas may be converted into a plasma state, thereby forming a carbon coating layer on the metal nitride coating layer.
    Type: Application
    Filed: September 14, 2015
    Publication date: August 25, 2016
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Kwang Hoon CHOI, Woong Pyo HONG, Chi Seung LEE, Hyun Dal PARK, Bokyung KIM, Jungyeon PARK, In Woong LYO, Jiyoun SEO
  • Patent number: 9362579
    Abstract: A fuel cell system and a method for driving a fuel cell system are disclosed. The fuel cell system includes a fuel cell stack with a plurality of unit cells, a temperature measurer configured for determining a temperature of the fuel cell stack, a cell voltage measurer configured for determining voltages of one or more of the plurality of unit cells, and a control unit configured for monitoring the unit cell voltages of the plurality of unit cells to detect a minimum unit cell voltage when a measured temperature of the fuel cell stack is below zero, and configured for controlling the load current so that the detected minimum unit cell voltage may be maintained at a predetermined threshold voltage.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: June 7, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Seong-Jin An, Jin-Hwa Lee, Chi-Seung Lee