Patents by Inventor Yeong-Jun Choi

Yeong-Jun 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: 20240181903
    Abstract: An apparatus and method for charging wirelessly of a vehicle battery includes a plurality of power receiving coils each located on a suspension, located near wheels of a vehicle, and receiving power transmitted from an external charging system; a voltage detection module configured to detect a power of the plurality of power receiving coils; a suspension driving module configured to drive the suspension to adjust a height of each wheel of the vehicle; and a control module configured to control the suspension driving module based on the voltage detected by the voltage detection module.
    Type: Application
    Filed: March 7, 2022
    Publication date: June 6, 2024
    Applicant: JEJU NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Yeong Jun Choi, Hwa Rang Cha
  • Publication number: 20220305733
    Abstract: A level sensor assembly (552) for estimating a level of a dielectric powder (412) in a container assembly (544) includes a first electrode member (554) that is coupled to the container assembly (544); a second electrode member (556) that is coupled to the container assembly (544): and a control system (424). The second electrode member (556) is spaced apart from the first electrode member (554) and configured so that powder (512) in the container assembly (544) is positioned at least partly between the electrode members (554) (556). The control system (424) utilizes a capacitance between the electrode members (554) (556) to estimate the level of the powder (512) in the container assembly (544).
    Type: Application
    Filed: March 22, 2022
    Publication date: September 29, 2022
    Inventors: Victor Itliong Solidum, Kristopher Daniel Sanford, Alton Hugh Phillips, Lexian Guo, Patrick Shih Chang, Johnathan Agustin Marquez, Yeong-Jun Choi
  • Patent number: 11092170
    Abstract: A stage assembly (10) includes a stage (14), and a fluid actuator assembly (24) that moves the stage (14). The fluid actuator assembly (24) includes a piston housing (32) that defines a piston chamber (34); (ii) a piston (36) that separates the piston chamber (34) into a first chamber (34A) and a second chamber (34B); (iii) a supply valve (38C) that controls the flow of the working fluid (40) into the first chamber (34A); and (iv) an exhaust valve (38D) that controls the flow of the working fluid (40) out of the first chamber (34A). The supply valve (38C) has a supply orifice (250G) having a supply orifice area, and the exhaust valve (38D) has an exhaust orifice (352G) having an exhaust orifice area. Moreover, the supply orifice area is different from the exhaust orifice area. Further multiple valves of different sizes can be used in combination for the supply and exhaust for each chamber (34A), (34B).
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: August 17, 2021
    Inventors: Alex Ka Tim Poon, Yeong-Jun Choi, Pai-Hsueh Yang, Sandy Lee, Gaurav Keswani, Rocky Mai
  • Publication number: 20190376531
    Abstract: A stage assembly (10) includes a stage (14), and a fluid actuator assembly (24) that moves the stage (14). The fluid actuator assembly (24) includes a piston housing (32) that defines a piston chamber (34); (ii) a piston (36) that separates the piston chamber (34) into a first chamber (34A) and a second chamber (34B); (iii) a supply valve (38C) that controls the flow of the working fluid (40) into the first chamber (34A); and (iv) an exhaust valve (38D) that controls the flow of the working fluid (40) out of the first chamber (34A). The supply valve (38C) has a supply orifice (250G) having a supply orifice area, and the exhaust valve (38D) has an exhaust orifice (352G) having an exhaust orifice area. Moreover, the supply orifice area is different from the exhaust orifice area. Further multiple valves of different sizes can be used in combination for the supply and exhaust for each chamber (34A), (34B).
    Type: Application
    Filed: February 12, 2018
    Publication date: December 12, 2019
    Inventors: Alex Ka Tim Poon, Yeong-Jun Choi, Pai-Hsueh Yang, Sandy Lee, Gaurav Keswani, Rocky Mai
  • Patent number: 9227361
    Abstract: Nano imprint lithography templates for purging of fluid during nano imprint lithography processes are described. The templates may include an inner channel and an outer channel. The inner channel constructed to provide fluid communication with a process gas supply to a region between the template and a substrate during the nano imprint lithography process. The outer channel constructed to evacuate fluid and/or confine fluid between the active area of template and the substrate.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: January 5, 2016
    Assignee: Canon Nanotechnologies, Inc.
    Inventors: Byung-Jin Choi, Yeong-Jun Choi, Kosta S. Selinidis, Steven C. Shackleton
  • Publication number: 20140008841
    Abstract: Nano imprint lithography templates for purging of fluid during nano imprint lithography processes are described. The templates may include an inner channel and an outer channel. The inner channel constructed to provide fluid communication with a process gas supply to a region between the template and a substrate during the nano imprint lithography process. The outer channel constructed to evacuate fluid and/or confine fluid between the active area of template and the substrate.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 9, 2014
    Applicant: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Yeong-Jun Choi, Kosta S. Selinidis, Steven C. Shackleton
  • Patent number: 8142704
    Abstract: A loading unit, surface scanning module, and an imprint module may be integrated into a single tool. Template may be loaded on loading unit and positioned within imprint module. Substrate may then be loaded on loading unit and scanned defects using surface scanning module. If substrate passes inspection by surface scanning module, substrate may be positioned imprint module where formable material may be dispensed thereon and imprinted. The imprinted substrate may then be unloaded from imprinting module.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: March 27, 2012
    Assignee: Molecular Imprints, Inc.
    Inventors: Liang Wang, Yeong-jun Choi, Byung-Jin Choi
  • Publication number: 20110140304
    Abstract: Nano imprint lithography templates for purging of fluid during nano imprint lithography processes are described. The templates may include an inner channel and an outer channel. The inner channel constructed to provide fluid communication with a process gas supply to a region between the template and a substrate during the nano imprint lithography process. The outer channel constructed to evacuate fluid and/or confine fluid between the active area of template and the substrate.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 16, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Byung-Jin Choi, Yeong-jun Choi, Kosta S. Selinidis, Steven C. Shackleton
  • Patent number: 7931846
    Abstract: Systems to control an atmosphere about a substrate are described. The systems include a wall coupled to the substrate to create a resistance of the flow between different regions of the substrate.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 26, 2011
    Assignee: Molecular Imprints, Inc.
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Publication number: 20100119637
    Abstract: Systems to control an atmosphere about a substrate are described. The systems include a wall coupled to the substrate to create a resistance of the flow between different regions of the substrate.
    Type: Application
    Filed: January 15, 2010
    Publication date: May 13, 2010
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Publication number: 20100096766
    Abstract: A loading unit, surface scanning module, and an imprint module may be integrated into a single tool. Template may be loaded on loading unit and positioned within imprint module. Substrate may then be loaded on loading unit and scanned defects using surface scanning module. If substrate passes inspection by surface scanning module, substrate may be positioned imprint module where formable material may be dispensed thereon and imprinted. The imprinted substrate may then be unloaded from imprinting module.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 22, 2010
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Liang Wang, Yeong-jun Choi, Byung-Jin Choi
  • Patent number: 7670534
    Abstract: The present invention is directed towards a method of controlling an atmosphere about a substrate, the method including, inter alia, positioning a body a distance from a surface of the substrate, the body having a wall coupled thereto placed in a position to create a flow resistance of a fluid between first and second regions of the substrate; and altering the position of the wall such that when a magnitude of the distance between the body and the surface of the substrate is decreased, a probability of the wall contacting the substrate is minimized.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: March 2, 2010
    Assignee: Molecular Imprints, Inc.
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Patent number: 7641840
    Abstract: The present invention is directed towards a method of expelling a gas positioned between a substrate and a mold, the substrate and the mold further having a liquid positioned therebetween.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: January 5, 2010
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Mahadevan GanapathiSubramanian, Yeong-jun Choi, Mario J. Meissl
  • Patent number: 7635445
    Abstract: The present invention is directed towards a method of separating a mold, included in a template, from a layer disposed on a substrate, the method including, inter alia, applying a separation force to the template to separate the template from the layer; and facilitating localized deformation in the substrate to reduce the separation force required to achieve separation.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: December 22, 2009
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Anshuman Cherala, Yeong-jun Choi, Mario J. Meissl, Sidlgata V. Sreenivasan, Norman E. Schumaker, Xiaoming Lu, Ian M. McMackin, Daniel A. Babbs
  • Patent number: 7316554
    Abstract: The present invention is directed towards a system to control an atmosphere about a substrate, the system including, inter alia, a body spaced-apart from a surface of the substrate a distance; a supply of fluid coupled to introduce a flow between the body and the substrate; and a wall coupled to the body to create a resistance of the flow between first and second regions of the substrate, with a position of the wall being varied in response to a decrease in a magnitude of the distance.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: January 8, 2008
    Assignee: Molecular Imprints, Inc.
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Publication number: 20070228589
    Abstract: The present invention is directed towards a method of expelling a gas positioned between a substrate and a mold, the substrate and the mold further having a liquid positioned therebetween.
    Type: Application
    Filed: May 17, 2007
    Publication date: October 4, 2007
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Byung-Jin Choi, Mahadevan GanapathiSubramanian, Yeong-jun Choi, Mario Meissl
  • Publication number: 20070063384
    Abstract: The present invention is directed towards a method of controlling an atmosphere about a substrate, the method including, inter alia, positioning a body a distance from a surface of the substrate, the body having a wall coupled thereto placed in a position to create a flow resistance of a fluid between first and second regions of the substrate; and altering the position of the wall such that when a magnitude of the distance between the body and the surface of the substrate is decreased, a probability of the wall contacting the substrate is minimized.
    Type: Application
    Filed: September 21, 2005
    Publication date: March 22, 2007
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Publication number: 20070065532
    Abstract: The present invention is directed towards a system to control an atmosphere about a substrate, the system including, inter alia, a body spaced-apart from a surface of the substrate a distance; a supply of fluid coupled to introduce a flow between the body and the substrate; and a wall coupled to the body to create a resistance of the flow between first and second regions of the substrate, with a position of the wall being varied in response to a decrease in a magnitude of the distance.
    Type: Application
    Filed: September 21, 2005
    Publication date: March 22, 2007
    Inventors: Yeong-Jun Choi, Byung-Jin Choi
  • Publication number: 20060172549
    Abstract: The present invention is directed towards a method of separating a mold, included in a template, from a layer disposed on a substrate, the method including, inter alia, applying a separation force to the template to separate the template from the layer; and facilitating localized deformation in the substrate to reduce the separation force required to achieve separation.
    Type: Application
    Filed: April 18, 2005
    Publication date: August 3, 2006
    Inventors: Byung-Jin Choi, Anshuman Cherala, Yeong-jun Choi, Mario Meissl, Sidlgata Sreenivasan, Norman Schumaker, Xiaoming Lu, Ian McMackin, Daniel Babbs