Patents by Inventor Doo-Seop Lee

Doo-Seop 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).

  • Integrated circuit devices that provide constant time delays irrespective of temperature variation
    Patent number: 6778000
    Abstract: A delay circuit is provided including first and second resistive elements electrically coupled in series having first and second resistance values. The first resistance value varies in proportion to temperature and the second resistance value varies in inverse proportion to temperature.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: August 17, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Doo-Seop Lee, Seung-Keun Lee
  • Integrated circuit devices that provide constant time delays irrespective of temperature variation
    Publication number: 20030193360
    Abstract: A delay circuit is provided including first and second resistive elements electrically coupled in series having first and second resistance values. The first resistance value varies in proportion to temperature and the second resistance value varies in inverse proportion to temperature.
    Type: Application
    Filed: February 4, 2003
    Publication date: October 16, 2003
    Inventors: Doo-Seop Lee, Seung-Keun Lee