Patents by Inventor Jang Gu Oh

Jang Gu Oh 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: 8705023
    Abstract: Disclosed is an apparatus for testing an LED lamp which includes: a secured seat on which the LED lamp is seated; an up and down shifter which, when the LED lamp is seated on the secured seat, shifts from an initial position spaced upward from the LED lamp to a measurement position in which the up and down shifter contacts with a socket of the LED lamp, and which supplies electric power to the LED lamp when the up and down shifter is placed in the measurement position, and a sensor sensing that the up and down shifter is placed in the measurement position; and a quality determining means determining a quality of the LED lamp based on light emitted from the LED lamp, and comprising an illuminometer or a luminance meter.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 22, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park
  • Patent number: 8670112
    Abstract: Disclosed is a method for operating a test apparatus for an LED lamp. The method includes: forming a self-holding circuit by switching on a first switching means such that an up and down shifter provided in the test apparatus for the LED lamp moves down; moving down and stopping the up and down shifter from a determined initial position to a measurement position; measuring the quality of the LED lamp equipped with the test apparatus for the LED lamp; releasing the self-holding circuit by switching on the second switching means such that the up and down shifter moves up; and moving up and down shifter from the measurement position to the determined initial position.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: March 11, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park
  • Publication number: 20110231130
    Abstract: Disclosed is an apparatus for testing an LED lamp which includes: a secured seat on which the LED lamp is seated; an up and down shifter which, when the LED lamp is seated on the secured seat, shifts from an initial position spaced upward from the LED lamp to a measurement position in which the up and down shifter contacts with a socket of the LED lamp, and which supplies electric power to the LED lamp when the up and down shifter is placed in the measurement position, and a sensor sensing that the up and down shifter is placed in the measurement position; and a quality determining means determining a quality of the LED lamp based on light emitted from the LED lamp, and comprising an illuminometer or a luminance meter.
    Type: Application
    Filed: January 6, 2011
    Publication date: September 22, 2011
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park
  • Publication number: 20110228273
    Abstract: Disclosed is a method for operating a test apparatus for an LED lamp. The method includes: forming a self-holding circuit by switching on a first switching means such that an up and down shifter provided in the test apparatus for the LED lamp moves down; moving down and stopping the up and down shifter from a determined initial position to a measurement position; measuring the quality of the LED lamp equipped with the test apparatus for the LED lamp; releasing the self-holding circuit by switching on the second switching means such that the up and down shifter moves up; and moving up and down shifter from the measurement position to the determined initial position.
    Type: Application
    Filed: January 6, 2011
    Publication date: September 22, 2011
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Sungho Hong, Jang Gu Oh, Tae Young Choi, Jong Tae Park