Patents by Inventor Lee Sang Youl

Lee Sang Youl 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).

  • LIGHT EMITTING DEVICE AND METHOD FOR FABRICATING THE SAME
    Publication number: 20110317433
    Abstract: A light emitting device includes a light emitting structure comprising a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer; a reflective layer formed under the light emitting structure; and a transparent supporting layer formed between the light emitting structure and the reflective layer, to emit a light generated from the active layer; and a conductive layer formed under the reflective layer, to surround the reflective layer.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 29, 2011
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Jeong Hwan Hee, Lee Sang Youl
  • Method of manufacturing plate type titanium heat exchanger
    Publication number: 20040069837
    Abstract: In a method of manufacturing a plate type titanium heat exchanger in which a plurality of titanium herringbone plates are laminated and flow paths are formed between the respective herringbone plates, after brazing materials are charged or coated to the joints between the herringbone plates, respectively, the herringbone plates are placed in a vacuum heating furnace, subjected to vacuum degas processing while being gradually heated, and joined to each other by brazing by being more heated after a prescribed vacuum pressure has been obtained.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 15, 2004
    Inventors: Akira Fujiyama, Lee Sang Youl, Yoshio Nakajima, Tadao Matsu