Patents by Inventor Kyu Back Lee

Kyu Back Lee 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).

  • Blood pump actuator and a blood pump system thereof
    Patent number: 7662084
    Abstract: A blood pump actuator to generate a driving force for driving a blood pump is disclosed. The blood pump actuator includes: a motor unit having a stator and a rotor, and rotating to generate a rotating force; a cam unit to convert the rotating motion of the motor unit into a rectilinear reciprocating motion; and a bellows unit having a bellows, which is expandable and contractible and contains a fluid therein, and an upper bellows plate and a lower bellows plate respectively attached to the upper and lower ends of the bellows, wherein the lower bellows plate moves upwards and downwards in a vertical direction according to the rectilinear reciprocating motion of the cam unit engaging with the lower bellows plate, and the bellows repeatedly expands and contracts according to the vertical movement of the lower bellows plate.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: February 16, 2010
    Assignee: Korea University Industry and Academy Cooperation Foundation
    Inventors: Kyung Sun, Kyu Back Lee, Yong Doo Park, Ho Sung Son, Chang Mo Hwang, Gi Seok Jeong
  • Blood Pump Actuator And A Blood Pump System Thereof
    Publication number: 20080161637
    Abstract: A blood pump actuator to generate a driving force for driving a blood pump is disclosed. The blood pump actuator includes: a motor unit having a stator and a rotor, and rotating to generate a rotating force; a cam unit to convert the rotating motion of the motor unit into a rectilinear reciprocating motion; and a bellows unit having a bellows, which is expandable and contractible and contains a fluid therein, and an upper bellows plate and a lower bellows plate respectively attached to the upper and lower ends of the bellows, wherein the lower bellows plate moves upwards and downwards in a vertical direction according to the rectilinear reciprocating motion of the cam unit engaging with the lower bellows plate, and the bellows repeatedly expands and contracts according to the vertical movement of the lower bellows plate.
    Type: Application
    Filed: October 20, 2005
    Publication date: July 3, 2008
    Inventors: Kyung Sun, Kyu Back Lee, Yong Doo Park, Ho Sung Son, Chang Mo Hwang, Gi Seok Jeong
  • Method of manufacturing porous matrix-type controlled release systems using emulsion technique
    Patent number: 6451348
    Abstract: A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solved therein; thereafter forming it into a desirable matrix shape; lyophilizing or drying it at a low temperature or room temperature until the matrix surface is hardened; and drying it again in order to remove the water and the organic solvent.
    Type: Grant
    Filed: January 3, 2000
    Date of Patent: September 17, 2002
    Assignee: Korea Institute of Science and Technology
    Inventors: Seo Young Jeong, Kuiwon Choi, Ick-Chan Kwon, Yong-Hee Kim, Jae Bong Choi, Kyu Back Lee