Patents by Inventor Tejas ULAVI

Tejas ULAVI 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).

  • Patent number: 11950384
    Abstract: Process assemblies and cable management assemblies for managing cables in tight envelopes. A processing assembly includes a top chamber having at least one substrate support, a support shaft, a robot spindle assembly, a stator and a cable management system. The cable management system includes an inner trough assembly and an outer trough assembly configured to move relative to one another, and a plurality of chain links configured to house at least one cable for delivering power to the process assembly.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: April 2, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
  • Patent number: 11923233
    Abstract: Apparatus and methods for providing backside pressure control and edge purge gas to a substrate in a processing chamber. A seal band within a pocket of a substrate support defines an inner pocket region and an outer pocket region. The seal band has a pressure dependent controlled leakage rate so that a backside gas flow to the inner pocket region can diffuse through the seal band to the outer pocket region to create an edge purge while providing backside pressure to the substrate. Processing chambers, methods of processing a substrate and non-transitory computer-readable medium containing instructions to process a substrate are also disclosed.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: March 5, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Joseph AuBuchon, Tejas Ulavi
  • Patent number: 11791190
    Abstract: Substrate supports, substrate support assemblies and methods of using the substrate supports are described. The substrate support has a support surface with at least two electrodes and a plurality of purge channels bounded by a seal band. A power supply connected to the electrodes configured as an electrostatic chuck. A capacitance of the substrate is measured while on the substrate support to determine the chucking state of the substrate.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: October 17, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Tejas Ulavi, Arkaprava Dan, Mike Murtagh, Sanjeev Baluja
  • Patent number: 11769684
    Abstract: Substrate supports comprising a plurality of bonded plates forming a single component support body and methods of forming the substrate supports are described. The single component support body has an outer peripheral edge, a top surface and a bottom surface. A pocket is formed in the top surface and has a bottom surface, a depth and an outer peripheral edge. A purge ring is spaced a distance from the outer peripheral edge and comprises at least one opening in the top surface in fluid communication with a purge gas line within the body thickness.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: September 26, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Tejas Ulavi, Vijay D. Parkhe, Naveen Kumar Nagaraja, Sanjeev Baluja, Surajit Kumar, Dhritiman Subha Kashyap, Ashutosh Agarwal
  • Patent number: 11682576
    Abstract: Substrate supports comprising a top plate positioned on a shaft are described. The top plate including a primary heating element a first depth from the surface of the top plate, a inner zone heating element a second depth from the surface of the top plate and an outer zone heating element a third depth from the surface of the top plate. Substrate support assemblies comprising a plurality of substrate supports and methods of processing a substrate are also disclosed.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: June 20, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
  • Publication number: 20230175131
    Abstract: Process assemblies and cable management assemblies for managing cables in tight envelopes. A processing assembly includes a top chamber having at least one substrate support, a support shaft, a robot spindle assembly, a stator and a a cable management system. The cable management system includes an inner trough assembly and an outer trough assembly configured to move relative to one another, and a plurality of chain links configured to house at least one cable for delivering power to the process assembly.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 8, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
  • Publication number: 20230128297
    Abstract: Implementations disclosed herein generally relate to systems and methods of protecting a substrate support in a process chamber from cleaning fluid during a cleaning process. The method of cleaning the process chamber includes positioning in the process chamber a cover substrate above a substrate support and a process kit that separates a purge volume from a process volume. The method of cleaning includes flowing a purge gas in the purge volume to protect the substrate support and flowing a cleaning fluid to a process volume above the cover substrate, flowing the cleaning fluid in the process volume to an outer flow path, and to an exhaust outlet in the chamber body. The purge volume is maintained at a positive pressure with respect to the process volume to block the cleaning fluid from the purge volume.
    Type: Application
    Filed: December 16, 2022
    Publication date: April 27, 2023
    Inventors: Kalyanjit GHOSH, Shailendra SRIVASTAVA, Tejas ULAVI, Yusheng ZHOU, Amit Kumar BANSAL, Sanjeev BALUJA
  • Publication number: 20230113057
    Abstract: Substrate supports comprising a plurality of bonded plates forming a single component support body and methods of forming the substrate supports are described. The single component support body has an outer peripheral edge, a top surface and a bottom surface. A pocket is formed in the top surface and has a bottom surface, a depth and an outer peripheral edge. A purge ring is spaced a distance from the outer peripheral edge and comprises at least one opening in the top surface in fluid communication with a purge gas line within the body thickness.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 13, 2023
    Applicant: Applied Materials, Inc.
    Inventors: Tejas Ulavi, Vijay D. Parkhe, Naveen Kumar Nagaraja, Sanjeev Baluja, Surajit Kumar, Dhritiman Subha Kashyap, Ashutosh Agarwal
  • Patent number: 11623253
    Abstract: Substrate supports, substrate support assemblies and methods of using an arc generated between a first electrode and a second electrode to clean a support surface. The first electrode comprises a plurality of first branches which are interdigitated with a plurality of branches of the second electrode in a finger-joint like pattern creating a gap between the first electrode and the second electrode.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: April 11, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Tejas Ulavi, Arkaprava Dan, Sanjeev Baluja, Wei V. Tang
  • Patent number: 11602064
    Abstract: Process assemblies and cable management assemblies for managing cables in tight envelopes. A processing assembly includes a top chamber having at least one substrate support, a support shaft, a robot spindle assembly, a stator and a cable management system. The cable management system includes an inner trough assembly and an outer trough assembly configured to move relative to one another, and a plurality of chain links configured to house at least one cable for delivering power to the process assembly.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: March 7, 2023
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
  • Publication number: 20220403520
    Abstract: Embodiments described herein relate to ground path systems providing a shorter and symmetrical path for radio frequency (RF) energy to propagate to a ground to reduce generation of the parasitic plasma. The ground path system bifurcates the processing volume of the chamber to form an inner volume that isolates an outer volume of the processing volume.
    Type: Application
    Filed: August 22, 2022
    Publication date: December 22, 2022
    Inventors: Tuan Anh NGUYEN, Jason M. SCHALLER, Edward P. HAMMOND, IV, David BLAHNIK, Tejas ULAVI, Amit Kumar BANSAL, Sanjeev BALUJA, Jun MA, Juan Carlos ROCHA-ALVAREZ
  • Patent number: 11532462
    Abstract: Implementations disclosed herein generally relate to systems and methods of protecting a substrate support in a process chamber from cleaning fluid during a cleaning process. The method of cleaning the process chamber includes positioning in the process chamber a cover substrate above a substrate support and a process kit that separates a purge volume from a process volume. The method of cleaning includes flowing a purge gas in the purge volume to protect the substrate support and flowing a cleaning fluid to a process volume above the cover substrate, flowing the cleaning fluid in the process volume to an outer flow path, and to an exhaust outlet in the chamber body. The purge volume is maintained at a positive pressure with respect to the process volume to block the cleaning fluid from the purge volume.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 20, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Kalyanjit Ghosh, Shailendra Srivastava, Tejas Ulavi, Yusheng Zhou, Amit Kumar Bansal, Sanjeev Baluja
  • Patent number: 11479855
    Abstract: Apparatus and methods to process one or more wafers are described. A processing chamber comprises a first processing station comprising a first gas injector having a first face, a first emissivity and a first temperature, a second processing station comprising a second gas injector having a second face, a second emissivity and a second temperature, and a substrate support assembly comprising a plurality of substantially coplanar support surfaces, the substrate support assembly configured to move the support surfaces between the first processing station and the second processing station. When a wafer is on the support surfaces, a temperature skew of less than about 0.5° C. is developed upon moving the wafer between the stations in about 0.5 seconds.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: October 25, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Joseph AuBuchon, Sanjeev Baluja, Dhritiman Subha Kashyap, Jared Ahmad Lee, Tejas Ulavi, Michael Rice
  • Publication number: 20220319899
    Abstract: Substrate supports comprising a top plate positioned on a shaft are described. The top plate including a primary heating element a first depth from the surface of the top plate, a inner zone heating element a second depth from the surface of the top plate and an outer zone heating element a third depth from the surface of the top plate. Substrate support assemblies comprising a plurality of substrate supports and methods of processing a substrate are also disclosed.
    Type: Application
    Filed: June 21, 2022
    Publication date: October 6, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
  • Patent number: 11434569
    Abstract: Embodiments described herein relate to ground path systems providing a shorter and symmetrical path for radio frequency (RF) energy to propagate to a ground to reduce generation of the parasitic plasma. The ground path system bifurcates the processing volume of the chamber to form an inner volume that isolates an outer volume of the processing volume.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: September 6, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Tuan Anh Nguyen, Jason M. Schaller, Edward P. Hammond, IV, David Blahnik, Tejas Ulavi, Amit Kumar Bansal, Sanjeev Baluja, Jun Ma, Juan Carlos Rocha
  • Patent number: 11430686
    Abstract: Substrate supports comprising a top plate positioned on a shaft are described. The top plate including a primary heating element a first depth from the surface of the top plate, a inner zone heating element a second depth from the surface of the top plate and an outer zone heating element a third depth from the surface of the top plate. Substrate support assemblies comprising a plurality of substrate supports and methods of processing a substrate are also disclosed.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: August 30, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
  • Publication number: 20220152668
    Abstract: Substrate supports, substrate support assemblies and methods of using an arc generated between a first electrode and a second electrode to clean a support surface. The first electrode comprises a plurality of first branches which are interdigitated with a plurality of branches of the second electrode in a finger-joint like pattern creating a gap between the first electrode and the second electrode.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 19, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Tejas Ulavi, Arkaprava Dan, Sanjeev Baluja, Wei V. Tang
  • Publication number: 20220106683
    Abstract: Apparatus and methods for loading and unloading substrates from a spatial processing chamber are described. A support assembly has a rotatable center base and support arms extending therefrom. A support shaft is at the outer end of the support arms and a substrate support is on the support shaft. Primary lift pins are positioned within openings in the substrate support. Secondary lift pins are positioned within openings in the support arms and are aligned with the primary lift pins. An actuation plate within the processing volume causes, upon movement of the support assembly, the primary lift pins to elevate through contact with the secondary lift pins.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 7, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Sanjeev Baluja, Tejas Ulavi, Eric J. Hoffmann, Ashutosh Agarwal
  • Publication number: 20220071037
    Abstract: Process assemblies and cable management assemblies for managing cables in tight envelopes. A processing assembly includes a top chamber having at least one substrate support, a support shaft, a robot spindle assembly, a stator and a cable management system. The cable management system includes an inner trough assembly and an outer trough assembly configured to move relative to one another, and a plurality of chain links configured to house at least one cable for delivering power to the process assembly.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 3, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
  • Publication number: 20220068674
    Abstract: A heater assembly having a top seal and a second seal configured to account for deviation in processing heights and motor runoff of a heater standoff. The top seal is positioned between a shield plate and a top plate and the bottom seal is positioned between a heater mounting base and the heater standoff.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 3, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Akshay Gunaji, Tejas Ulavi, Sanjeev Baluja