Patents by Inventor Woo Sun Choi

Woo Sun Choi 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).

  • Light emitting diode bulb
    Patent number: 8210735
    Abstract: An LED bulb includes an LED module having a PCB on which at least one LED element is mounted. A housing has a plurality of heat dissipating protrusions which protrude from an outer circumferential surface thereof, with a thread being formed on a predetermined portion of the housing. A light transmitting cover has a thread by which the cover can be fastened to the thread which is formed on the predetermined portion of the housing, in a threaded manner. Further, the LED bulb includes a bottom case into which an inverter for supplying a direct current to the LED module is inserted. The bottom case is inserted into the housing to be fastened to the housing. A socket is fastened to the bottom case.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: July 3, 2012
    Assignee: Kumho Electric Co., Ltd.
    Inventor: Woo Sun Choi
  • LIGHT EMITTING DIODE BULB USING THERMAL CONDUCTOR
    Publication number: 20120025708
    Abstract: An LED bulb using a thermal conductor. The LED bulb includes an LED module having a PCB on which at least one LED element is mounted. A housing has a plurality of heat dissipating protrusions which protrude from an outer circumferential surface thereof, and is made of a thermal conductor, with a thread being formed on a predetermined portion of the housing. A light transmitting cover has a thread by which the cover can be fastened to the thread which is formed on the predetermined portion of the housing, in a threaded manner. An inverter supplies a direct current to the LED module. A heat dissipating plate is provided between the LED module and the housing to dissipate heat generated by the LED element. A socket is fastened to the housing.
    Type: Application
    Filed: May 10, 2011
    Publication date: February 2, 2012
    Inventors: Woo Sun CHOI, Ho Seop PARK
  • LIGHT EMITTING DIODE BULB
    Publication number: 20120019139
    Abstract: An LED bulb includes an LED module having a PCB on which at least one LED element is mounted. A housing has a plurality of heat dissipating protrusions which protrude from an outer circumferential surface thereof, with a thread being formed on a predetermined portion of the housing. A light transmitting cover has a thread by which the cover can be fastened to the thread which is formed on the predetermined portion of the housing, in a threaded manner. Further, the LED bulb includes a bottom case into which an inverter for supplying a direct current to the LED module is inserted. The bottom case is inserted into the housing to be fastened to the housing. A socket is fastened to the bottom case.
    Type: Application
    Filed: May 10, 2011
    Publication date: January 26, 2012
    Inventor: Woo Sun CHOI