Patents by Inventor Chander Radhakrishnan

Chander Radhakrishnan 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: 20210265136
    Abstract: An apparatus for providing plasma processing is provided. A plasma processing chamber is provided. A first turbopump with an inlet is in fluid connection with the plasma processing chamber and an exhaust. A gas source provides gas to the plasma processing chamber. At least one gas line is in fluid connection between the gas source and the plasma processing chamber. At least one bleed line is in fluid connection with the at least one gas line. At least one gas line valve is on the at least one gas line located between, where the at least one bleed line is connected to the at least one gas line and the plasma processing chamber. At least one bypass valve is on the at least one bleed line.
    Type: Application
    Filed: June 6, 2019
    Publication date: August 26, 2021
    Inventors: Ming LI, Benson Quyen TONG, Chander RADHAKRISHNAN
  • Patent number: 10147587
    Abstract: A system and method for a waferless cleaning method for a capacitive coupled plasma system. The method includes forming a protective layer on a top surface of an electrostatic chuck, volatilizing etch byproducts deposited on one or more inner surfaces of the plasma process chamber, removing volatilized etch byproducts from the plasma process chamber and removing the protective layer from the top surface of the electrostatic chuck. A capacitive coupled plasma system including a waferless cleaning recipe is also described.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 4, 2018
    Assignee: Lam Research Corporation
    Inventors: Shijian Li, David Carman, Chander Radhakrishnan
  • Publication number: 20180005804
    Abstract: A system and method for a waferless cleaning method for a capacitive coupled plasma system. The method includes forming a protective layer on a top surface of an electrostatic chuck, volatilizing etch byproducts deposited on one or more inner surfaces of the plasma process chamber, removing volatilized etch byproducts from the plasma process chamber and removing the protective layer from the top surface of the electrostatic chuck. A capacitive coupled plasma system including a waferless cleaning recipe is also described.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Inventors: Shijian Li, David Carman, Chander Radhakrishnan
  • Patent number: 9824865
    Abstract: A system and method for a waferless cleaning method for a capacitive coupled plasma system. The method includes forming a protective layer on a top surface of an electrostatic chuck, volatilizing etch byproducts deposited on one or more inner surfaces of the plasma process chamber, removing volatilized etch byproducts from the plasma process chamber and removing the protective layer from the top surface of the electrostatic chuck. A capacitive coupled plasma system including a waferless cleaning recipe is also described.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 21, 2017
    Assignee: Lam Research Corporation
    Inventors: Shijian Li, David Carman, Chander Radhakrishnan
  • Publication number: 20150255259
    Abstract: A system and method for a waferless cleaning method for a capacitive coupled plasma system. The method includes forming a protective layer on a top surface of an electrostatic chuck, volatilizing etch byproducts deposited on one or more inner surfaces of the plasma process chamber, removing volatilized etch byproducts from the plasma process chamber and removing the protective layer from the top surface of the electrostatic chuck. A capacitive coupled plasma system including a waferless cleaning recipe is also described.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 10, 2015
    Applicant: Lam Research Corporation
    Inventors: Shijian Li, David Carman, Chander Radhakrishnan