Patents by Inventor Bum-Joo KIM

Bum-Joo 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).

  • Apparatus for controlling droplet motion in electric field and method of the same
    Patent number: 9216573
    Abstract: The present invention relates to an apparatus for controlling droplet motion in an electric field by reducing volume of a single droplet to a very small volume using a strong electric field and controlling a position of a droplet using a repulsive force of the same polarity, and a method of the same. The apparatus according to an exemplary embodiment of the present invention includes a first electrode, an insulator disposed above the first electrode, a discharge tip disposed above the insulator by a predetermined distance and dividing a transferred fluid into a small volume of a droplet, and a second electrode contacting the fluid supplied through the discharge tip. The first electrode and the second electrode may form an electric field at an end of the discharge tip by forming a potential difference between the first electrode and the second electrode.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: December 22, 2015
    Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Bum-Joo Kim, Intae Kim, Geunbae Lim
  • APPARATUS FOR CONTROLLING DROPLET MOTION IN ELECTRIC FIELD AND METHOD OF THE SAME
    Publication number: 20110114192
    Abstract: The present invention relates to an apparatus for controlling droplet motion in an electric field by reducing volume of a single droplet to a very small volume using a strong electric field and controlling a position of a droplet using a repulsive force of the same polarity, and a method of the same. The apparatus according to an exemplary embodiment of the present invention includes a first electrode, an insulator disposed above the first electrode, a discharge tip disposed above the insulator by a predetermined distance and dividing a transferred fluid into a small volume of a droplet, and a second electrode contacting the fluid supplied through the discharge tip. The first electrode and the second electrode may form an electric field at an end of the discharge tip by forming a potential difference between the first electrode and the second electrode.
    Type: Application
    Filed: November 17, 2010
    Publication date: May 19, 2011
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Bum-Joo KIM, Intae KIM, Geunbae LIM