Patents by Inventor Ki-Ho Rhee

Ki-Ho Rhee 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: 8516868
    Abstract: Provided is a die for shear drawing capable of performing continuous drawing and shear deformation at the same time. The die for shear drawing includes a material processing channel in which a material is sheared and drawn while passing therethrough, wherein the processing channel includes an inlet path positioned at a front end thereof, and an outlet path positioned at a rear end thereof, when viewed from a movement direction of a material. The inlet path and the outlet path are connected to intersect a central axes thereof at a certain angle, and the processing channel includes a cross-section reduction segment allowing an outlet cross-sectional area of the outlet path to be smaller than an inlet cross-sectional area of the inlet path to thereby draw out a material from an exit of the outlet path with the material filled therein.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: August 27, 2013
    Assignee: Posco
    Inventors: Ki-Ho Rhee, Il-Heon Son, Joong-Ki Hwang, Duk-Lak Lee
  • Publication number: 20110247388
    Abstract: Provided is a die for shear drawing capable of performing continuous drawing and shear deformation at the same time. The die for shear drawing includes a material processing channel in which a material is sheared and drawn while passing therethrough, wherein the processing channel includes an inlet path positioned at a front end thereof, and an outlet path positioned at a rear end thereof, when viewed from a movement direction of a material. The inlet path and the outlet path are connected to intersect a central axes thereof at a certain angle, and the processing channel includes a cross-section reduction segment allowing an outlet cross-sectional area of the outlet path to be smaller than an inlet cross-sectional area of the inlet path to thereby draw out a material from an exit of the outlet path with the material filled therein.
    Type: Application
    Filed: December 10, 2009
    Publication date: October 13, 2011
    Applicant: POSCO
    Inventors: Ki-Ho Rhee, Il-Heon Son, Joong-Ki Hwang, Duk-Lak Lee