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).
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Publication number: 20250054804Abstract: 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: ApplicationFiled: October 29, 2024Publication date: February 13, 2025Applicant: Applied Materials, Inc.Inventors: Sanjeev Baluja, Tejas Ulavi, Eric J. Hoffmann, Ashutosh Agarwal
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Patent number: 12183618Abstract: 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: GrantFiled: October 1, 2020Date of Patent: December 31, 2024Assignee: Applied Materials, Inc.Inventors: Sanjeev Baluja, Tejas Ulavi, Eric J. Hoffmann, Ashutosh Agarwal
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Patent number: 12087555Abstract: 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: GrantFiled: December 16, 2022Date of Patent: September 10, 2024Assignee: Applied Materials, Inc.Inventors: Kalyanjit Ghosh, Shailendra Srivastava, Tejas Ulavi, Yusheng Zhou, Amit Kumar Bansal, Sanjeev Baluja
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Patent number: 12020957Abstract: 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: GrantFiled: August 31, 2020Date of Patent: June 25, 2024Assignee: Applied Materials, Inc.Inventors: Akshay Gunaji, Tejas Ulavi, Sanjeev Baluja
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Patent number: 12018376Abstract: Process chambers and methods for leveling a motor shaft and substrate support plane are described. The process chamber includes a motor shaft connected to the process chamber with a plurality of motor bolts. A first plurality of sensors is arranged at about the same radial distance from the rotational axis and at different angular positions relative to the rotational axis and a second plurality of sensors are arranged to measure the support plane. An angle-dependent motor leveling profile is determined and shim values for the motor bolts are determined to level the motor shaft. The support plane is measured using the second plurality of sensors to level the support plane perpendicular to the motor shaft.Type: GrantFiled: September 18, 2020Date of Patent: June 25, 2024Assignee: Applied Materials, Inc.Inventors: Ashutosh Agarwal, Tejas Ulavi, Sanjeev Baluja
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Patent number: 11950384Abstract: 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: GrantFiled: January 31, 2023Date of Patent: April 2, 2024Assignee: APPLIED MATERIALS, INC.Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
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Patent number: 11923233Abstract: 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: GrantFiled: June 24, 2020Date of Patent: March 5, 2024Assignee: APPLIED MATERIALS, INC.Inventors: Joseph AuBuchon, Tejas Ulavi
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Patent number: 11791190Abstract: 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: GrantFiled: May 7, 2021Date of Patent: October 17, 2023Assignee: APPLIED MATERIALS, INC.Inventors: Tejas Ulavi, Arkaprava Dan, Mike Murtagh, Sanjeev Baluja
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Patent number: 11769684Abstract: 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: GrantFiled: December 13, 2022Date of Patent: September 26, 2023Assignee: Applied Materials, Inc.Inventors: Tejas Ulavi, Vijay D. Parkhe, Naveen Kumar Nagaraja, Sanjeev Baluja, Surajit Kumar, Dhritiman Subha Kashyap, Ashutosh Agarwal
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Patent number: 11682576Abstract: 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: GrantFiled: June 21, 2022Date of Patent: June 20, 2023Assignee: Applied Materials, Inc.Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
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Publication number: 20230175131Abstract: 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: ApplicationFiled: January 31, 2023Publication date: June 8, 2023Applicant: Applied Materials, Inc.Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
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Publication number: 20230128297Abstract: 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: ApplicationFiled: December 16, 2022Publication date: April 27, 2023Inventors: Kalyanjit GHOSH, Shailendra SRIVASTAVA, Tejas ULAVI, Yusheng ZHOU, Amit Kumar BANSAL, Sanjeev BALUJA
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Publication number: 20230113057Abstract: 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: ApplicationFiled: December 13, 2022Publication date: April 13, 2023Applicant: Applied Materials, Inc.Inventors: Tejas Ulavi, Vijay D. Parkhe, Naveen Kumar Nagaraja, Sanjeev Baluja, Surajit Kumar, Dhritiman Subha Kashyap, Ashutosh Agarwal
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Patent number: 11623253Abstract: 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: GrantFiled: January 24, 2022Date of Patent: April 11, 2023Assignee: APPLIED MATERIALS, INC.Inventors: Tejas Ulavi, Arkaprava Dan, Sanjeev Baluja, Wei V. Tang
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Patent number: 11602064Abstract: 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: GrantFiled: September 1, 2020Date of Patent: March 7, 2023Assignee: APPLIED MATERIALS, INC.Inventors: Akshay Gunaji, Uday Pai, Timothy J. Roggenbuck, Sanjeev Baluja, Kalesh Panchaxari Karadi, Tejas Ulavi
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Publication number: 20220403520Abstract: 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: ApplicationFiled: August 22, 2022Publication date: December 22, 2022Inventors: 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
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Patent number: 11532462Abstract: 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: GrantFiled: April 22, 2020Date of Patent: December 20, 2022Assignee: Applied Materials, Inc.Inventors: Kalyanjit Ghosh, Shailendra Srivastava, Tejas Ulavi, Yusheng Zhou, Amit Kumar Bansal, Sanjeev Baluja
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Patent number: 11479855Abstract: 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: GrantFiled: August 25, 2020Date of Patent: October 25, 2022Assignee: Applied Materials, Inc.Inventors: Joseph AuBuchon, Sanjeev Baluja, Dhritiman Subha Kashyap, Jared Ahmad Lee, Tejas Ulavi, Michael Rice
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Publication number: 20220319899Abstract: 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: ApplicationFiled: June 21, 2022Publication date: October 6, 2022Applicant: Applied Materials, Inc.Inventors: Tejas Ulavi, Sanjeev Baluja, Dhritiman Subha Kashyap
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Patent number: 11434569Abstract: 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: GrantFiled: May 1, 2019Date of Patent: September 6, 2022Assignee: 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