Patents by Inventor Do-Gyung Lee

Do-Gyung 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: 5928425
    Abstract: This chemical catcher is provided to collect chemical materials in the manufacturing process of the semiconductor device. In particular, this collects the remaining chemical materials for preventing the undesirable effects incurred by the remaining chemical materials after the chemical materials are practically used in the manufacturing process of the semiconductor device. This chemical catcher is mounted to a chemical injecting apparatus which injects the chemical in the manufacturing process of semiconductor, which is comprised of a chemical collecting means arranged in relation to an injection nozzle of the chemical injecting apparatus in order to collect the falling chemical from the injection nozzle, by which means the remaining chemical in the injection nozzle after the chemical injection process is effectively collected and therefore the production of semiconductor having poor quality is reduced.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: July 27, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Do-Gyung Lee