Patents by Inventor Chaoyuan C. Chen

Chaoyuan C. Chen 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).

  • Sonication cleaning system
    Patent number: 9296022
    Abstract: A sonication cleaning system is provided. The sonication cleaning system includes a cleaning tank configured to contain a liquid and a flow control system configured to cause a gradient cross flow of the liquid through the cleaning tank. The system further includes a sonication generator configured to agitate the liquid in the cleaning tank and a controller configured to vary a power applied to the sonication generator to agitate the liquid in the cleaning tank based on an oscillation position of a workpiece within the cleaning tank.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: March 29, 2016
    Assignee: WD Media, LLC
    Inventors: Chaoyuan C. Chen, Bing-Shiuan Chang
  • Multiple cleaning processes in a single tank
    Patent number: 9177601
    Abstract: Methods of cleaning workpieces are described. One method includes performing both a sonication cleaning operation and a rinse cleaning operation within a single cleaning tank. Another cleaning method described includes the use of cross flow of cleaning liquid within a cleaning tank while performing a rinse clean. The cleaning method includes the oscillation of one or more workpieces in the cleaning tank to perform the rinse clean.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: November 3, 2015
    Assignee: WD Media, LLC
    Inventors: Chaoyuan C. Chen, Shaun H. Chen, Michael S. Rosano
  • Cross flow tank
    Patent number: 8596287
    Abstract: A cleaning tank apparatus and methods for cleaning workpieces are described. The cleaning tank may include an outlet plate having a top edge and a bottom edge, with the outlet plate having a plurality of rows of outlet openings. The plurality of rows of outlet openings including a first row of outlet openings being closest to the top edge of the outlet plate, and a second row of outlet openings below the first row of outlet openings, wherein at least one of the outlet openings of the first row is larger than the outlet openings of the second row.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: December 3, 2013
    Assignee: WD Media, LLC
    Inventors: Chaoyuan C. Chen, Bing-Shiuan Chang
  • Sonication cleaning system
    Patent number: 8584687
    Abstract: A sonication cleaning system is provided. The sonication cleaning system includes a cleaning tank configured to contain a liquid and a flow control system configured to cause a gradient cross flow of the liquid through the cleaning tank. The system further includes a sonication generator configured to agitate the liquid in the cleaning tank and a controller configured to vary a power applied to the sonication generator to agitate the liquid in the cleaning tank based on an oscillation position of a workpiece within the cleaning tank.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: November 19, 2013
    Assignee: WD Media, LLC
    Inventors: Chaoyuan C. Chen, Bing-Shiuan Chang