Patents by Inventor Sanjay Bhat

Sanjay Bhat 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: 11940724
    Abstract: Provided herein are apparatus, systems and methods for processing reticle blanks. A reticle processing system includes a support assembly having a plate coupled to a frame, and a carrier base assembly supported on the support assembly. The carrier base assembly comprises a wall extending from a top surface of the carrier base and defining a containment region for a reticle.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: March 26, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Sanjay Bhat, Vibhu Jindal
  • Patent number: 11860528
    Abstract: Substrate processing systems or platforms and methods configured to process substrates including of extreme ultraviolet (EUV) mask blanks are disclosed. Systems or platforms provide a small footprint, high throughput of substrates and minimize defect generation. The substrate processing system platform comprises a single central transfer chamber, a single transfer robot, a substrate flipping fixture, and processing chambers are positioned around the single central transfer chamber.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 2, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Ribhu Gautam, Vibhu Jindal, Sanjay Bhat, Praveen Kumar Choragudi, Vinodh Ramachandran, Arun Rengaraj
  • Patent number: 11789358
    Abstract: Extreme ultraviolet (EUV) mask blanks and methods for their manufacture, and production systems therefor are disclosed. The method for forming an EUV mask blank comprises smoothing out surface defects on a surface of a substrate.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: October 17, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Wen Xiao, Vibhu Jindal, Weimin Li, Sanjay Bhat, Azeddine Zerrade
  • Patent number: 11668003
    Abstract: A deposition system, and a method of operation thereof are disclosed. The deposition system comprises a cathode assembly comprising a rotating magnet assembly including a plurality of outer peripheral magnets surrounding an inner peripheral magnet.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: June 6, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Vibhu Jindal, Sanjay Bhat
  • Patent number: 11669008
    Abstract: Methods for the manufacture of extreme ultraviolet (EUV) mask blanks and production systems therefor are disclosed. A method for forming an EUV mask blank comprises forming a bilayer on a portion of a multi-cathode PVD chamber interior and then forming a multilayer stack of Si/Mo on a substrate in the multi-cathode PVD chamber.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: June 6, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Wen Xiao, Sanjay Bhat, Shiyu Liu, Binni Varghese, Vibhu Jindal, Azeddine Zerrade
  • Patent number: 11639544
    Abstract: A physical vapor deposition (PVD) chamber and a method of operation thereof are disclosed. Chambers and methods are described that provide a chamber comprising an upper shield with two holes that are positioned to permit alternate sputtering from two targets.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: May 2, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Sanjay Bhat, Vibhu Jindal, Wen Xiao
  • Patent number: 11604151
    Abstract: Apparatus and methods for measuring surface topography are described. The analysis apparatus and methods detect light reflected from the reflective backside of a cantilever assembly including a tip, calculate a background level (BGL) value obtained from an optical scan of a reference sample using a power spectral density (PSD) value obtained from a topographical scan of a reference sample to generate a correlational coefficient between the BGL and the PSD values. The correlational coefficient between the BGL and PSD values is used to measure the BGL value of additional EUV mask blanks by a topographical scan of the EUV mask blanks using the same tip mounted to the cantilever.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: March 14, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Weimin Li, Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11599016
    Abstract: A physical vapor deposition (PVD) chamber and a method of operation thereof are disclosed. Chambers and methods are described that provide a chamber comprising an upper shield with two holes that are positioned to permit alternate sputtering from two targets. A process for improving reflectivity from a multilayer stack is also disclosed.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: March 7, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Vibhu Jindal, Wen Xiao, Sanjay Bhat
  • Patent number: 11557473
    Abstract: A physical vapor deposition chamber comprising a tilting substrate support is described. Methods of processing a substrate are also provided comprising tilting at least one of the substrate and the target to improve the uniformity of the layer on the substrate from the center of the substrate to the edge of the substrate. Process controllers are also described which comprise one or more process configurations causing the physical deposition chamber to perform the operations of rotating a substrate support within the physical deposition chamber and tilting the substrate support at a plurality of angles with respect to a horizontal axis.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: January 17, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11556869
    Abstract: This disclosure relates generally to a method and system for dynamically predicting vehicle arrival time using a temporal difference learning technique. Due to varying uncertainties predicting vehicle arrival time and travel time are crucial elements to make the public transport travel more attractive and reliable with increased traffic volumes. The method includes receiving a plurality of inputs in real time and then extracting a plurality of temporal events from a closest candidate trip pattern using a historical database. Further, a trained temporal difference predictor model (TTDPM) is utilized for dynamically predicting the arrival time from the current location of the vehicle to the target destination based on the plurality of nonlinear features. The non-linear features and linear approximator formulation of TTDPM provides fast gradient computation improves training time.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: January 17, 2023
    Assignee: TATA CONSULTANCY SERVICES LIMITED
    Inventors: Avinash Achar, Vignesh Lakshmanan Kangadharan Palani Radja, Sanjay Bhat
  • Patent number: 11542595
    Abstract: A physical vapor deposition (PVD) chamber and a method of operation thereof are disclosed. Chambers and methods are described that provide a chamber comprising an upper shield with two holes that are positioned to permit alternate sputtering from two targets.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: January 3, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11515132
    Abstract: Physical vapor deposition target assemblies and methods of manufacturing such target assemblies are disclosed. An exemplary target assembly comprises a flow pattern including a plurality of arcs and bends fluidly connected to an inlet end and an outlet end.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: November 29, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Sanjay Bhat, Vibhu Jindal, Vishwas Kumar Pandey
  • Patent number: 11480865
    Abstract: Apparatus and methods for improving flatness of extreme ultraviolet (EUV) mask blanks are disclosed. The apparatus and methods may utilize one or more of heating the backside and/or the front side of the EUV mask blank and a cooling system. Interfacial layers of the EUV mask blank are selectively heated, resulting in improved flatness of the EUV mask blanks.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: October 25, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Vibhu Jindal, Sanjay Bhat, Wen Xiao, Vinodh Ramachandran
  • Patent number: 11480866
    Abstract: Apparatus and methods to improve centroid wavelength uniformity of EUV mask blanks are disclosed. The apparatus and methods may utilize one or more of heating the backside and/or the front side of the EUV mask blank. Selected regions and sub regions of the EUV mask blank are selectively heated, resulting in improved centroid wavelength uniformity of EUV mask blanks.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 25, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Herng Yau Yoong, Wen Xiao, Ribhu Gautam, Sanjay Bhat, Vibhu Jindal
  • Publication number: 20220283100
    Abstract: Apparatus and methods for measuring surface topography are described. The analysis apparatus and methods detect light reflected from the reflective backside of a cantilever assembly including a tip, calculate a background level (BGL) value obtained from an optical scan of a reference sample using a power spectral density (PSD) value obtained from a topographical scan of a reference sample to generate a correlational coefficient between the BGL and the PSD values. The correlational coefficient between the BGL and PSD values is used to measure the BGL value of additional EUV mask blanks by a topographical scan of the EUV mask blanks using the same tip mounted to the cantilever.
    Type: Application
    Filed: May 18, 2022
    Publication date: September 8, 2022
    Applicant: Aplied Materials, Inc.
    Inventors: Weimin Li, Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11422096
    Abstract: Apparatus and methods for measuring surface topography are described. The analysis apparatus and methods detect light reflected from the reflective backside of a cantilever assembly including a tip, calculate a background level (BGL) value obtained from an optical scan of a reference sample using a power spectral density (PSD) value obtained from a topographical scan of a reference sample to generate a correlational coefficient between the BGL and the PSD values. The correlational coefficient between the BGL and PSD values is used to measure the BGL value of additional EUV mask blanks by a topographical scan of the EUV mask blanks using the same tip mounted to the cantilever.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: August 23, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Weimin Li, Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11410390
    Abstract: The invention provides an augmented reality device and method for assisting a user in choosing appropriate luminaire fixtures to install within their home. A user may point the camera of a mobile device toward the region or location in a room where a new luminaire is desired, and based upon data generated by an orientation determination means included within the device, an appropriate luminaire or luminaire category is selected automatically for the user from a stored catalogue or database. Once an appropriate luminaire has been chosen, it is inserted within an image captured by the camera to generate an augmented reality image depicting the luminaire fixture in place within the user's room.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 9, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Sanjeev Kumar Puvvada Sathyanarayana, Sanjay Bhat, Pramod Kukhshal
  • Patent number: 11390940
    Abstract: A physical vapor deposition chamber comprising a rotating substrate support having a rotational axis, a first cathode having a radial center positioned off-center from a rotational axis of the substrate support is disclosed. A process controller comprising one or more process configurations selected from one or more of a first configuration to determine a rotation speed (v) for a substrate support to complete a whole number of rotations (n) around the rotational axis of the substrate support in a process window time (t) to form a layer of a first material on a substrate, or a second configuration to rotate the substrate support at the rotation speed (v).
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: July 19, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Wen Xiao, Vibhu Jindal, Sanjay Bhat
  • Patent number: 11387085
    Abstract: A physical vapor deposition (PVD) chamber and a method of operation thereof are disclosed. Chambers and methods are described that provide a chamber comprising one or more of contours that reduce particle defects, temperature control and or measurement and and/or voltage particle traps to reduce processing defects.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: July 12, 2022
    Assignee: Applied Materials Inc.
    Inventors: Sanjay Bhat, Vibhu Jindal, Kamatchigobinath Manoharan
  • Publication number: 20220197128
    Abstract: Substrate processing systems or platforms and methods configured to process substrates including of extreme ultraviolet (EUV) mask blanks are disclosed. Systems or platforms provide a small footprint, high throughput of substrates and minimize defect generation. The substrate processing system platform comprises a single central transfer chamber, a single transfer robot, a substrate flipping fixture, and processing chambers are positioned around the single central transfer chamber.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Applicant: Applied Materials, Inc.
    Inventors: Ribhu Gautam, Vibhu Jindal, Sanjay Bhat, Praveen Kumar Choragudi, Vinodh Ramachandran, Arun Rengaraj