Patents by Inventor Daishuke Shimizu

Daishuke Shimizu 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: 20190157052
    Abstract: Embodiments include a plasma processing method for cleaning polymer byproducts from interior surfaces of the plasma chamber. In an embodiment the plasma process may include processing a workpiece in a plasma processing chamber. Thereafter, the method may include removing the workpiece from the processing chamber. After the workpiece is removed, embodiments may include cleaning the plasma processing chamber with a cleaning process that includes a high pressure cleaning process, a first low pressure cleaning process, and a second low pressure cleaning process, wherein the second low pressure cleaning process includes applying a pulsed bias.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 23, 2019
    Inventors: Kenny Linh DOAN, Usama Dadu, Wonseok Lee, Daishuke Shimizu, Li Ling, Kevin Choi