Patents by Inventor Kwang-chun HWANG

Kwang-chun HWANG 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).

  • PICKER FOR USE IN A HANDLER AND METHOD FOR ENABLING THE PICKER TO PLACE PACKAGED CHIPS
    Publication number: 20080157807
    Abstract: Provided is a picker for use in a handler, including at least one picker base, a row of nozzles provided to each of the picker base, and a detecting unit, provided to one side of each of the nozzle, for detecting if a packaged chip exists in a carrying hole on a user tray. The picker is capable of detecting if the packaged chip exists in a first row of the carrying holes on the user tray. And the picker is capable of placing the packaged chips into the first row of the carrying holes on the user tray and at the same time detecting if the packaged chip exists in a second row of the carrying holes on the user tray, when existence of the packaged chip is not detected on the first row of the carrying holes on the user tray.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 3, 2008
    Inventors: Heung-bok KIM, Kwang-chun HWANG, Beom-ho SHIN