Patents by Inventor Changho Han

Changho Han 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).

  • Patent number: 9767248
    Abstract: A semiconductor device and a layout verification method of a semiconductor device are provided. The layout verification method includes forming a plurality of standard cells each having a first type of a cross coupled structure (XC) and a second type of the XC on a substrate of the semiconductor device, forming a plurality of first inverters in which the first type of the XC is activated in the a plurality of the standard cells and a plurality of second inverters in which the second type of the XC is activated in the a plurality of the standard cells and estimating an electrical characteristic of the first type of the XC or the second type of the XC by measuring a magnitude of a signal delay of the plurality of the first inverters or the plurality of the second inverters.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG ELECTRONICS, CO., LTD.
    Inventors: Taejoong Song, Jung-Ho Do, Changho Han
  • Patent number: 9359277
    Abstract: The present invention relates to compositions, for example, the DBU/Hexafluoroacetone hydrate salt, and processes of preparing and using the same for the modification of chemical compounds via the release of trifluoroacetate. The DBU/Hexafluoroacetone hydrate salt can perform trifluoromethylation reactions on chemical compounds, such as carbonyl group-containing compounds.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: June 7, 2016
    Assignee: Purdue Research Foundation
    Inventors: David A. Colby, Mark V. Riofski, Changho Han
  • Publication number: 20160085904
    Abstract: A semiconductor device and a layout verification method of a semiconductor device are provided. The layout verification method includes forming a plurality of standard cells each having a first type of a cross coupled structure (XC) and a second type of the XC on a substrate of the semiconductor device, forming a plurality of first inverters in which the first type of the XC is activated in the a plurality of the standard cells and a plurality of second inverters in which the second type of the XC is activated in the a plurality of the standard cells and estimating an electrical characteristic of the first type of the XC or the second type of the XC by measuring a magnitude of a signal delay of the plurality of the first inverters or the plurality of the second inverters.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 24, 2016
    Inventors: Taejoong SONG, Jung-Ho DO, Changho HAN
  • Publication number: 20160085903
    Abstract: There is provided a method of verifying a Fin-based integrated circuit layout in a layout verifying system. The method includes receiving a layout corresponding to a specific integrated circuit unit, extracting one or more device codes from the layout, and synthesizing a code stream using the one or more extracted device codes according to a gate line sequence. Each device code is based on a corresponding gate line unit in the layout that includes an active region, gate lines, and a number of intersecting points with silicon fins of the layout.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 24, 2016
    Inventor: Changho HAN
  • Patent number: 9014745
    Abstract: When a mobile station registered at a closed-type femtocell base station is in a connection state in a cell area covered by the femtocell base station, the transfer power of the femtocell base station for a cell identification signal is adjusted according to one scale estimating the receiving quality of the cell identification signal at the mobile station. When no mobile station is located in the cell area covered by the femtocell base station, the cell identification signal is sent with the minimum transmission power necessary for a mobile station to make a call in the cell area to reduce the power consumption of the femtocell base station and also to reduce interference with other macrocell base stations and other femtocell base stations.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Changho Han, Shiro Mazawa, Michio Iguchi
  • Patent number: 8963044
    Abstract: Plasma jet assemblies are provided. A plasma jet assembly may include: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Yark Yeon Kim, Han Young Yu, Yong Ju Yun, Won Ick Jang, Eun-ju Jeong, Changho Han
  • Patent number: 8941065
    Abstract: Disclosed is a space perception device which includes a transceiver unit transmitting and receiving a signal; a processing unit analyzing signals transmitted and received through the transceiver unit to search location information of an obstacle at a space; and a vibration unit providing a user with location information of an obstacle at a space in response to a control of the processing unit. The vibration unit includes a plurality of vibrators having different three-dimensional coordinates.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 27, 2015
    Assignee: Electronics and Telecommunicatons Research Institute
    Inventors: Han Young Yu, Yark Yeon Kim, Yong Ju Yun, Won Ick Jang, Eun-ju Jeong, Changho Han
  • Publication number: 20140039182
    Abstract: The present invention relates to compositions, for example, the DBU/Hexafluoroacetone hydrate salt, and processes of preparing and using the same for the modification of chemical compounds via the release of trifluoroacetate. The DBU/Hexafluoroacetone hydrate salt can perform trifluoromethylation reactions on chemical compounds, such as carbonyl group-containing compounds.
    Type: Application
    Filed: March 22, 2012
    Publication date: February 6, 2014
    Inventors: David A. Colby, Mark V. Riofski, Changho Han
  • Publication number: 20130162463
    Abstract: Disclosed is a space perception device which includes a transceiver unit transmitting and receiving a signal; a processing unit analyzing signals transmitted and received through the transceiver unit to search location information of an obstacle at a space; and a vibration unit providing a user with location information of an obstacle at a space in response to a control of the processing unit. The vibration unit includes a plurality of vibrators having different three-dimensional coordinates.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 27, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Han Young YU, Yark Yeon KIM, Yong Ju YUN, Won Ick JANG, Eun-ju JEONG, Changho HAN
  • Publication number: 20130158466
    Abstract: Plasma brushes are provided. The plasma brush includes a nozzle, a connector connected to a first end of the nozzle, a power electrode disposed at a portion of the nozzle, and a ground electrode disposed at a second end of the nozzle opposite to the connector.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 20, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yark Yeon KIM, Han Young Yu, Yong Ju Yun, Won Ick Jang, Eun-ju Jeong, Changho Han
  • Publication number: 20130153545
    Abstract: Plasma jet assemblies are provided. A plasma jet assembly may include: a tube through which a gas flows; a power source providing a high frequency power exciting the gas in plasma state; a power electrode applying the high frequency power to the gas; and a plasma control unit removing arc discharge of a plasma gas generated in the tube by the high frequency power applied to the power electrode.
    Type: Application
    Filed: September 13, 2012
    Publication date: June 20, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Yark Yeon KIM, Han Young Yu, Yong Ju Yun, Won Ick Jang, Eun-ju Leong, Changho Han