Patents by Inventor Yang Hung

Yang Hung 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).

  • Publication number: 20060196530
    Abstract: A novel semiconductor wafer lifter is disclosed for handling wafers during wet bench processing. In particular, the lifter has a plurality of holes formed in its vertical support surface to allow cleaning or rinsing fluid to flow through the vertical support instead of around its sides. These holes facilitates a constant flow of fluid across the wafer during recirculation of the tank contents during etching and rinsing operations, thus ensuring more even etching of all wafers and minimizing the deposition of particulate matter on wafer surfaces.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 7, 2006
    Inventors: Yang Hung, Kuo Lu, Tseng Song, Chen Horng