Patents by Inventor Dharma Ratnam Srichurnam

Dharma Ratnam Srichurnam 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: 20240047185
    Abstract: Exemplary substrate processing systems may include a lid plate. The systems may include a gas feed line having an RPS outlet and a bypass outlet. The systems may include a remote plasma unit supported atop the lid plate. The remote plasma unit may include an inlet and an outlet. The inlet may be coupled with the RPS outlet. The systems may include a center manifold having an RPS inlet coupled with the outlet and a bypass inlet coupled with the bypass outlet. The center manifold may include a plurality of outlet ports. The systems may include a plurality of side manifolds that are fluidly coupled with the outlet ports. Each of the side manifolds may define a gas lumen. The systems may include a plurality of output manifolds seated on the lid plate. Each output manifold may be fluidly coupled with the gas lumen of one of the side manifolds.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Applicant: Applied Materials, Inc.
    Inventors: Abhijit A. Kangude, Badri N. Ramamurthi, Arun Chakravarthy Chakravarthy, Vinay K. Prabhakar, Dharma Ratnam Srichurnam
  • Publication number: 20230124246
    Abstract: Exemplary substrate processing systems may include a lid plate. The systems may include a gas splitter seated on the lid plate. The gas splitter may include a top surface and side surfaces. The gas splitter may define a first and second gas inlets, with each gas inlet extending through one side surface. The gas splitter may define first and second gas outlets extending through the top surface. The gas splitter may define first and second gas lumens that extend between and fluidly couple each gas inlet with corresponding gas outlets. The gas splitter may define mixing channels that include a mixing outlet extending through a side surface and a mixing inlet extending through the top surface. The systems may include output manifolds seated on the lid plate. The systems may include output weldments that fluidly couple each mixing outlet with a respective one of the output manifolds.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 20, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Arun Chakravarthy Chakravarthy, Vinay K. Prabhakar, Dharma Ratnam Srichurnam, Hossein Rezvantalab
  • Publication number: 20220307129
    Abstract: The present disclosure relates to a cleaning assemblies, components thereof, and methods associated therewith for substrate processing chambers. In one example, a cleaning assembly for a substrate processing chamber includes a distribution ring. The distribution ring comprises a body with an inlet and an outlet. The outlet is fluidly coupled to an internal volume of the substrate processing chamber via a sidewall of the substrate processing chamber. The cleaning assembly includes a cleaning conduit configured to fluidly couple a gas manifold to the distribution ring for diverting a first portion of cleaning fluid from the gas manifold to the distribution ring.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 29, 2022
    Inventors: Yuxing Zhang, Tuan Anh Nguyen, Amit Kumar Bansal, Nitin Pathak, Saket Rathi, Thomas Rubio, Udit S. Kotagi, Badri N. Ramamurthi, Dharma Ratnam Srichurnam
  • Patent number: 10903102
    Abstract: A method of purging a substrate carrier at a load port includes: opening a door of a substrate carrier that is delivered to a load port; spraying the substrate carrier with a gas flow responsive to the opening the door; mapping substrates within the substrate carrier to generate a substrate map; determining a process purge state based on the substrate map; and activating one or more inter-substrate nozzle arrays and one or more curtain nozzle arrays using a predefined spray status configuration for the process purge state.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: January 26, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Subramaniam V. Iyer, Dharma Ratnam Srichurnam, Devendrappa Holeyannavar, Douglas MacLeod, Kenneth Carpenter, Naveen Kumar, Vivek R. Rao, Patrick Pannese
  • Publication number: 20200066560
    Abstract: A method of purging a substrate carrier at a load port includes: opening a door of a substrate carrier that is delivered to a load port; spraying the substrate carrier with a gas flow responsive to the opening the door; mapping substrates within the substrate carrier to generate a substrate map; determining a process purge state based on the substrate map; and activating one or more inter-substrate nozzle arrays and one or more curtain nozzle arrays using a predefined spray status configuration for the process purge state.
    Type: Application
    Filed: October 29, 2019
    Publication date: February 27, 2020
    Inventors: Subramaniam V. Iyer, Dharma Ratnam Srichurnam, Devendrappa Holeyannavar, Douglas MacLeod, Kenneth Carpenter, Naveen Kumar, Vivek R. Rao, Patrick Pannese
  • Patent number: 10510570
    Abstract: Embodiments of the present invention provide systems, apparatus, and methods for purging a substrate carrier. Embodiments include a frame configured to sit proximate to a load port door without interfering with operation of a factory interface or equipment front end module robot; one or more inter-substrate nozzle arrays supported by the frame and configured to spray gas into a substrate carrier; and one or more curtain nozzle arrays supported by the frame and configured to spray gas across an opening of the substrate carrier. Numerous additional aspects are disclosed.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: December 17, 2019
    Assignee: Applied Materials, Inc.
    Inventors: Subramaniam V. Iyer, Dharma Ratnam Srichurnam, Devendrappa Holeyannavar, Douglas MacLeod, Kenneth Carpenter, Naveen Kumar, Vivek R. Rao, Patrick Pannese
  • Publication number: 20160118279
    Abstract: Embodiments of the present invention provide systems, apparatus, and methods for purging a substrate carrier. Embodiments include a frame configured to sit proximate to a load port door without interfering with operation of a factory interface or equipment front end module robot; one or more inter-substrate nozzle arrays supported by the frame and configured to spray gas into a substrate carrier; and one or more curtain nozzle arrays supported by the frame and configured to spray gas across an opening of the substrate carrier. Numerous additional aspects are disclosed.
    Type: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Inventors: Subramaniam V. Iyer, Dharma Ratnam Srichurnam, Devendrappa Holeyannavar, Douglas MacLeod, Kenneth Carpenter, Naveen Kumar, Vivek R. Rao, Patrick Pannese