Patents by Inventor Leung Por Boris CHAN

Leung Por Boris CHAN 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).

  • Megasonic cleaning system
    Patent number: 8978673
    Abstract: A system for cleaning semiconductor packages is provided which includes a pickhead that is configured to hold the semiconductor packages in an array arrangement and a plurality of nozzles, each of which is constructed and arranged to project a separate jet of cleaning fluid upwardly against the semiconductor packages. A megasonic energy generator is coupled for imparting megasonic energy to the cleaning fluid and a driving device drives relative movement between the plurality of nozzles and the pickhead to direct the said jets to clean the array of packages on the pickhead.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: March 17, 2015
    Assignee: ASM Assembly Automation Ltd
    Inventors: Chi Wah Cheng, Wang Lung Alan Tse, Leung Por Boris Chan
  • MEGASONIC CLEANING SYSTEM
    Publication number: 20090038638
    Abstract: A system for cleaning semiconductor packages is provided which comprises a pickhead that is configured to hold the semiconductor packages in an array arrangement and a plurality of nozzles, each of which is constructed and arranged to project a separate jet of cleaning fluid upwardly against the semiconductor packages. A megasonic energy generator is coupled for imparting megasonic energy to the cleaning fluid and a driving device drives relative movement between the plurality of nozzles and the pickhead to direct the said jets to clean the array of packages on the pickhead.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 12, 2009
    Inventors: Chi Wah CHENG, Wang Lung Alan TSE, Leung Por Boris CHAN