Patents by Inventor Won-churl Lee

Won-churl 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).

  • Ultrasonic wave generating apparatus for preventing scale from being produced in pipe and removing the same from the pipe
    Patent number: 8764911
    Abstract: An ultrasonic wave generating apparatus includes: a generator including an electric power supply, a controller that generates a control signal, a liquid crystal display indicator, and a transducer drive circuit; and transducer portions. The generator includes: the controller having an internal memory or a port to which an external memory is inserted, and formed of a microcomputer to control the generator and the transducer portions; thyristor portions that are arranged respectively in the front and rear ends of the transducer portions, in which two thyristors are connected in series in the respective thyristor portions; snubber circuit portions that are connected in parallel with the respective thyristor portions; at least one transducer that is connected with the controller and is included in the transducer portions; and choke coils that are connected with one end of the respective transducers in the transducer portions.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: July 1, 2014
    Inventor: Won-churl Lee
  • Ultrasonic Wave Generating Apparatus For Preventing Scale From Being Produced in Pipe and Removing the Same From the Pipe
    Publication number: 20110284041
    Abstract: An ultrasonic wave generating apparatus includes: a generator including an electric power supply, a controller that generates a control signal, a liquid crystal display indicator, and a transducer drive circuit; and transducer portions. The generator includes: the controller having an internal memory or a port to which an external memory is inserted, and formed of a microcomputer to control the generator and the transducer portions; thyristor portions that are arranged respectively in the front and rear ends of the transducer portions, in which two thyristors are connected in series in the respective thyristor portions; snubber circuit portions that are connected in parallel with the respective thyristor portions; at least one transducer that is connected with the controller and is included in the transducer portions; and choke coils that are connected with one end of the respective transducers in the transducer portions.
    Type: Application
    Filed: May 24, 2010
    Publication date: November 24, 2011
    Inventor: Won-churl Lee