Patents by Inventor Jin H. Han

Jin H. Han 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).

  • Injection molding apparatus for resin using gas injection
    Patent number: 5635221
    Abstract: An injection molding apparatus for a resin structure uses gas injection. The apparatus includes a resin supply that feeds more than one resin to a mold, a gas exhaust that discharges gas supplied to the resin in order to closely contact the resin to the mold, and a supply selector that selectively opens and closes the resin supply using the pressure of the discharged gas to supply a different kind of resin onto the inner surface of a previously supplied resin.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: June 3, 1997
    Assignee: LG Electronics Inc.
    Inventor: Jin H. Han