Patents by Inventor Myong-Cheul Chun

Myong-Cheul Chun 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 of fabricating dual hole glass ferrules
    Patent number: 7467528
    Abstract: The present invention relates to a preform for a glass ferrule and a fabrication method thereof. It is an objective of the present invention to fabricate dual hole ferrules having various distances between two holes by using a single preform. It is another objective of the present invention to fabricate a preform for a dual hole glass ferrule by a simple process. To meet the above and other objectives, the present invention provides a preform for a glass ferrule, comprising two holes which are formed through the preform and exit out both side cross-sections of the preform, wherein the two holes are symmetrical to the center in a diameter direction of the preform and a distance between the two holes changes in a lengthwise direction of the preform.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: December 23, 2008
    Assignees: Research Institute of Industrial Science & Technology, JCCOM. Co., Ltd.
    Inventors: Soon-Cheol Hwang, Sun-Uk Kim, Myong-Cheul Chun
  • Method for fabricating a porous silica sphere
    Publication number: 20060150676
    Abstract: The present invention relates to a method for the fabrication of a porous silica sphere, wherein silica gel is treated with heat for a designated time by increasing its temperature at the speed of 90° C. per minute up to 1050 to 1200° C. to fabricate a porous silica sphere. The present invention can fabricate a porous silica sphere that has a homogeneous structure and pore size at a low cost, using commercial silica gel that is sold for various purposes such as food preservation and humidity control, as a raw material.
    Type: Application
    Filed: June 10, 2004
    Publication date: July 13, 2006
    Inventors: Sun-Uk Kim, Soon-Cheol Hwang, Myong-Cheul Chun
  • Preform for glass ferrule and fabrication method thereof
    Publication number: 20040050113
    Abstract: The present invention relates to a preform for a glass ferrule and a fabrication method thereof. It is an objective of the present invention to fabricate dual hole ferrules having various distances between two holes by using a single preform. It is another objective of the present invention to fabricate a preform for a dual hole glass ferrule by a simple process. To meet the above and other objectives, the present invention provides a preform for a glass ferrule, comprising two holes which are formed through the preform and exit out both side cross-sections of the preform, wherein the two holes are symmetrical to the center in a diameter direction of the preform and a distance between the two holes changes in a lengthwise direction of the preform.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 18, 2004
    Inventors: Soon-Cheol Hwang, Sun-Uk Kim, Myong-Cheul Chun