Patents by Inventor Vijay Vaniapura

Vijay Vaniapura 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: 20210111017
    Abstract: Defluorination processes for removing fluorine residuals from a workpiece such as a semiconductor wafer are provided. In one example implementation, a method for processing a workpiece can include supporting a workpiece on a workpiece support. The workpiece can have a photoresist layer. The workpiece can have one or more fluorine residuals on a surface of the workpiece. The method can include performing a defluorination process on the workpiece at least in part using a plasma generated from a first process gas. The first process gas can include a hydrogen gas. Subsequent to performing the defluorination process, the method can include performing a plasma strip process on the workpiece to at least partially remove a photoresist layer from the workpiece.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Vijay Vaniapura, Andrei Gramada
  • Patent number: 10872761
    Abstract: Defluorination processes for removing fluorine residuals from a workpiece such as a semiconductor wafer are provided. In one example implementation, a method for processing a workpiece can include supporting a workpiece on a workpiece support. The workpiece can have a photoresist layer. The workpiece can have one or more fluorine residuals on a surface of the workpiece. The method can include performing a defluorination process on the workpiece at least in part using a plasma generated from a first process gas. The first process gas can include a hydrogen gas. Subsequent to performing the defluorination process, the method can include performing a plasma strip process on the workpiece to at least partially remove a photoresist layer from the workpiece.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: December 22, 2020
    Assignees: Mattson Technology Inc., Beijing E-Town Seminconductor Technology Co., Ltd.
    Inventors: Vijay Vaniapura, Andrei Gramada
  • Publication number: 20190393027
    Abstract: Defluorination processes for removing fluorine residuals from a workpiece such as a semiconductor wafer are provided. In one example implementation, a method for processing a workpiece can include supporting a workpiece on a workpiece support. The workpiece can have a photoresist layer. The workpiece can have one or more fluorine residuals on a surface of the workpiece. The method can include performing a defluorination process on the workpiece at least in part using a plasma generated from a first process gas. The first process gas can include a hydrogen gas. Subsequent to performing the defluorination process, the method can include performing a plasma strip process on the workpiece to at least partially remove a photoresist layer from the workpiece.
    Type: Application
    Filed: May 6, 2019
    Publication date: December 26, 2019
    Inventors: Vijay Vaniapura, Andrei Gramada
  • Publication number: 20090206056
    Abstract: A multi-station workpiece processing system provides a targeted equal share of a regulated input process gas flow to each active processing station of a plurality of active processing stations using a single gas flow regulator for each gas and irrespective of the number of inactive processing stations.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 20, 2009
    Inventors: Songlin Xu, Daniel J. Devine, Wen Ma, Ce Qin, Vijay Vaniapura