Patents by Inventor Si Hyeok LEE

Si Hyeok 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).

  • Patent number: 8662875
    Abstract: Disclosed herein are an injection foam molding apparatus for manufacturing one-piece shoes or soles and one-piece shoes manufactured using the same. A thermoplastic resin is injected into top and bottom molds in a state in which the top and bottom molds are coupled with a middle mold and is then pressed to form the upper and lower parts of a shoe, the middle mold is separated therefrom, and then the top mold and bottom mold, including the upper part and lower part of the shoe, respectively, are pressed, thereby forming the upper part and lower part of the shoe into one body. The injection foam molding apparatus is advantageous in that, since functional one-piece shoes or soles, having various colors, hardnesses and specific gravities, and having excellent feeling and durability, can be manufactured using different materials by one apparatus, working time is decreased, and productivity can be increased.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: March 4, 2014
    Assignees: Comtech Chemical Co., Ltd., Sung Shin New Material Co., Ltd.
    Inventors: Byoung Mun Lim, Jang Sik Yang, Si Hyeok Lee, In Chul Choi
  • Publication number: 20100242312
    Abstract: Disclosed herein are an injection foam molding apparatus for manufacturing one-piece shoes or soles and one-piece shoes manufactured using the same. A thermoplastic resin is injected into top and bottom molds in a state in which the top and bottom molds are coupled with a middle mold and is then pressed to form the upper and lower parts of a shoe, the middle mold is separated therefrom, and then the top mold and bottom mold, including the upper part and lower part of the shoe, respectively, are pressed, thereby forming the upper part and lower part of the shoe into one body. The injection foam molding apparatus is advantageous in that, since functional one-piece shoes or soles, having various colors, hardnesses and specific gravities, and having excellent feeling and durability, can be manufactured using different materials by one apparatus, working time is decreased, and productivity can be increased.
    Type: Application
    Filed: June 15, 2010
    Publication date: September 30, 2010
    Applicants: COMTECH CHEMICAL CO., LTD., SUNG SHIN NEW MATERIAL CO., LTD.
    Inventors: Byoung Mun LIM, Jang Sik YANG, Si Hyeok LEE, In Chul CHOI