Patents by Inventor Dong Ryun Kim

Dong Ryun Kim 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).

  • Method for evaluation of density profile in carbon/carbon material and method for production of standard density test block used therein
    Patent number: 8989345
    Abstract: Disclosed are a method for evaluating a local density profile in a carbon/carbon material and a method for producing a standard density test block capable of quantitatively evaluating the density profile in the carbon/carbon material, wherein the method for evaluating the density profile includes a first step of preparing a standard density test block to be inserted in the carbon/carbon material, wherein the standard density test block is produced by using the same type of material as the carbon/carbon material and thereafter inserted in the carbon/carbon material, a second step of radiating X-rays onto the carbon/carbon material having the standard density test block inserted so as to obtain and correct computed tomographic image, and a third step of measuring a physical density by use of a linear attenuation coefficient of the computed tomographic image, whereby the local density profile can accurately be evaluated by use of a nondestructive testing and additionally such method can be utilized as an excelle
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: March 24, 2015
    Assignee: Agency for Defense Development
    Inventors: Dong Ryun Kim, Nam Gyun Yun
  • METHOD FOR EVALUATION OF DENSITY PROFILE IN CARBON/CARBON MATERIAL AND METHOD FOR PRODUCTION OF STANDARD DENSITY TEST BLOCK USED THEREIN
    Publication number: 20130003917
    Abstract: Disclosed are a method for evaluating a local density profile in a carbon/carbon material and a method for producing a standard density test block capable of quantitatively evaluating the density profile in the carbon/carbon material, wherein the method for evaluating the density profile includes a first step of preparing a standard density test block to be inserted in the carbon/carbon material, wherein the standard density test block is produced by using the same type of material as the carbon/carbon material and thereafter inserted in the carbon/carbon material, a second step of radiating X-rays onto the carbon/carbon material having the standard density test block inserted so as to obtain and correct computed tomographic image, and a third step of measuring a physical density by use of a linear attenuation coefficient of the computed tomographic image, whereby the local density profile can accurately be evaluated by use of a nondestructive testing and additionally such method can be utilized as an excelle
    Type: Application
    Filed: July 12, 2010
    Publication date: January 3, 2013
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Dong Ryun Kim, Nam Gyun Yun