Patents by Inventor Saravanakumar Natarajan

Saravanakumar Natarajan 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: 20230095095
    Abstract: Exemplary substrate processing systems may include a chamber body defining a transfer region. The systems may include a lid plate seated on the chamber body. The lid plate may define a plurality of apertures. The systems may include a plurality of lid stacks. The systems may include a plurality of substrate supports. The systems may include a plurality of peripheral valves. Each peripheral valve may be disposed in one of the processing regions. Each peripheral valve may include a bottom plate coupled with the chamber body. The peripheral valve may include a bellow. The bellow may be coupled with the bottom plate. The peripheral valve may include a sealing ring having a body defining a central aperture. A bottom surface of the body may be coupled with the bellow. The body may define a recess having a diameter greater than that of a support plate of a substrate support.
    Type: Application
    Filed: September 27, 2021
    Publication date: March 30, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Saravanakumar Natarajan, Ryan Pakulski
  • Patent number: 11217462
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: January 4, 2022
    Assignee: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Publication number: 20200273728
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Application
    Filed: March 30, 2020
    Publication date: August 27, 2020
    Applicant: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Patent number: 10607867
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: March 31, 2020
    Assignee: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Publication number: 20190109025
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Application
    Filed: December 4, 2018
    Publication date: April 11, 2019
    Applicant: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Patent number: 10147620
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: December 4, 2018
    Assignee: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Publication number: 20170229328
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Applicant: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Patent number: 9691645
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: June 27, 2017
    Assignee: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey
  • Publication number: 20170040191
    Abstract: A workpiece holder includes a puck, first and second heating devices in thermal communication with respective inner and outer portions of the puck, and a thermal sink in thermal communication with the puck. The first and second heating devices are independently controllable, and the first and second heating devices are in greater thermal communication with the puck, than thermal communication of the thermal sink with the puck. A method of controlling temperature distribution of a workpiece includes flowing a heat exchange fluid through a thermal sink to establish a reference temperature to a puck, raising temperatures of radially inner and outer portions of the puck to first and second temperatures greater than the reference temperature, by activating respective first and second heating devices disposed in thermal communication with the radially inner and outer portions of the puck, and placing the workpiece on the puck.
    Type: Application
    Filed: August 6, 2015
    Publication date: February 9, 2017
    Applicant: Applied Materials, Inc.
    Inventors: David Benjaminson, Dmitry Lubomirsky, Ananda Seelavanth Math, Saravanakumar Natarajan, Shubham Chourey