Patents by Inventor Kaushal Gangakhedkar

Kaushal Gangakhedkar 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: 20180211863
    Abstract: Described are apparatus and methods for processing a semiconductor wafer so that the wafer remains in place during processing. The wafer is subjected to a pressure differential between the top surface and bottom surface so that sufficient force prevents the wafer from moving during processing, the pressure differential generated by applying a decreased pressure to the back side of the wafer.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Inventors: Joseph Yudovsky, Kaushal Gangakhedkar
  • Patent number: 9922860
    Abstract: Described are apparatus and methods for processing a semiconductor wafer so that the wafer remains in place during processing. The wafer is subjected to a pressure differential between the top surface and bottom surface so that sufficient force prevents the wafer from moving during processing, the pressure differential generated by applying a decreased pressure to the back side of the wafer.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 20, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Joseph Yudovsky, Kaushal Gangakhedkar
  • Publication number: 20180023191
    Abstract: Pedestal assemblies with a thermal barrier plate, a torque plate and at least one kinematic mount to change a plane formed by the thermal barrier plate are described. Susceptor assemblies and processing chambers incorporating the pedestal assemblies are also described. Methods of leveling a susceptor to form parallel planes between the susceptor surface and a gas distribution assembly surface are also described.
    Type: Application
    Filed: July 24, 2017
    Publication date: January 25, 2018
    Inventor: Kaushal Gangakhedkar
  • Publication number: 20170352575
    Abstract: Susceptor assemblies comprising a susceptor base and a plurality of pie-shaped skins thereon are described. A pie anchor can be positioned in the center of the susceptor base to hold the pie-shaped skins in place during processing.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 7, 2017
    Inventors: Kaushal Gangakhedkar, Kallol Bera, Joseph Yudovsky
  • Publication number: 20170287770
    Abstract: Apparatus and method for processing a plurality of substrates in a batch processing chamber are described. The apparatus comprises a susceptor assembly, a lift assembly and a rotation assembly. The susceptor assembly has a top surface and a bottom surface with a plurality of recesses in the top surface. Each of the recesses has a lift pocket in the recess bottom. The lift assembly including a lift plate having a top surface to contact the substrate. The lift plate is connected to a lift shaft that extends through the susceptor assembly and connects to a lift friction pad. The rotation assembly has a rotation friction pad that contacts the lift friction pad. The rotation friction pad is connected to a rotation shaft and can be vertically aligned with the lift friction pad.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Kaushal Gangakhedkar, Joseph Yudovsky
  • Publication number: 20170148626
    Abstract: Plasma source assemblies comprising a housing with an RF hot electrode and a return electrode are described. The housing includes a gas inlet and a front face defining a flow path. The RF hot electrode includes a first surface oriented substantially parallel to the flow path. The return electrode includes a first surface oriented substantially parallel to the flow path and spaced from the first surface of the RF hot electrode to form a gap. Processing chambers incorporating the plasma source assemblies and methods of using the plasma source assemblies are also described.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 25, 2017
    Inventors: Anantha K. Subramani, Kaushal Gangakhedkar, Abhishek Chowdhury, John C. Forster, Nattaworn Nuntaworanuch, Kallol Bera, Philip A. Kraus, Farzad Houshmand
  • Patent number: 9617640
    Abstract: Described are apparatus and methods for processing a semiconductor wafer in which the gap between the wafer surface and the gas distribution assembly remains uniform and of known thickness. The wafer is positioned within a susceptor assembly and the assembly is lifted toward the gas distribution assembly using actuators. The wafer can be lifted toward the gas distribution assembly by creating a fluid bearing below and/or above the wafer.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: April 11, 2017
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Joseph Yudovsky, Kevin Griffin, Kaushal Gangakhedkar
  • Publication number: 20160027675
    Abstract: Apparatus and methods of measuring and controlling the gap between a susceptor assembly and a gas distribution assembly are described. Apparatus and methods for positional control and temperature control for wafer transfer purposes are also described.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 28, 2016
    Inventors: Abraham RAVID, Kevin GRIFFIN, Joseph YUDOVSKY, Kaushal GANGAKHEDKAR, Dmitry A. DZILNO, Alex MINKOVICH
  • Publication number: 20160020132
    Abstract: Described are apparatus and methods for processing a semiconductor wafer so that the wafer remains in place during processing. The wafer is subjected to a pressure differential between the top surface and bottom surface so that sufficient force prevents the wafer from moving during processing, the pressure differential generated by applying a decreased pressure to the back side of the wafer.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 21, 2016
    Applicant: Applied Materials, Inc.
    Inventors: Joseph Yudovsky, Kaushal Gangakhedkar
  • Publication number: 20150376790
    Abstract: Apparatus and methods for processing a semiconductor wafer so that the wafer remains in place during processing. The wafer is subjected to a pressure differential between the top surface and bottom surface so that sufficient force prevents the wafer from moving during processing.
    Type: Application
    Filed: February 20, 2014
    Publication date: December 31, 2015
    Inventors: Joseph YUDOVSKY, Kevin Griffin, Kaushal GANGAKHEDKAR
  • Publication number: 20150376786
    Abstract: Gas distribution assemblies and susceptor assemblies made up of a plurality of pie-shaped segments which can be individually leveled, moved or changed. Processing chambers comprising the gas distribution assemblies, the susceptor assemblies and sensors with feedback circuits to adjust the gap between the susceptor and gas distribution assembly are also described. Methods of using the gas distribution assemblies, susceptor assemblies and processing chambers are also described.
    Type: Application
    Filed: February 20, 2014
    Publication date: December 31, 2015
    Inventors: Joseph YUDOVSKY, Kaushal GANGAKHEDKAR, Kevin GRIFFIN
  • Publication number: 20150345022
    Abstract: Described are apparatus and methods for processing a semiconductor wafer in which the gap between the wafer surface and the gas distribution assembly remains uniform and of known thickness. The wafer is positioned within a susceptor assembly and the assembly is lifted toward the gas distribution assembly using actuators. The wafer can be lifted toward the gas distribution assembly by creating a fluid bearing below and/or above the wafer.
    Type: Application
    Filed: February 20, 2014
    Publication date: December 3, 2015
    Inventors: Joseph YUDOVSKY, Kevin GRIFFIN, Kaushal GANGAKHEDKAR
  • Publication number: 20150236566
    Abstract: Apparatus and methods for processing a semiconductor wafer including a two-axis lift-rotation motor center pedestal with vacuum capabilities. Wafers are subjected to a pressure differential between the top surface and bottom surface so that sufficient force prevents the wafer from moving during processing, the pressure differential generated by applying a decreased pressure to the back side of the wafer through interface with the motor assembly.
    Type: Application
    Filed: May 7, 2015
    Publication date: August 20, 2015
    Inventors: Joseph Yudovsky, Kaushal Gangakhedkar
  • Patent number: 9103876
    Abstract: A probe system for facilitating the inspection of a device under test. System incorporates a storage rack; a probe bar gantry assembly; a probe assembly configured to electrically mate the device under test; and a robot system for picking the probe assembly from the storage rack and deliver the probe assembly to the probe bar gantry. The robot system is also enabled to pick a probe assembly from the probe bar gantry and deliver the probe assembly to the storage rack. The probe assembly includes a clamping assembly for attaching the probe assembly to the probe bar gantry or the storage rack. The probe assembly may include an array of contact pins configured to mate with conductive pads on the device under test when the probe assembly is installed on the probe bar gantry assembly.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: August 11, 2015
    Assignee: PHOTON DYNAMICS, INC.
    Inventors: Kent Nguyen, Kaushal Gangakhedkar, David Baldwin, Nile Light, Steve Aochi, Yan Wang, Atila Ersahin, Hai Tran, Thomas H. Bailey, Kiran Jitendra, Alan Cable, Dave Smiley, Thomas E. Wishard
  • Publication number: 20120319713
    Abstract: A probe system for facilitating the inspection of a device under test. System incorporates a storage rack; a probe bar gantry assembly; a probe assembly configured to electrically mate the device under test; and a robot system for picking the probe assembly from the storage rack and deliver the probe assembly to the probe bar gantry. The robot system is also enabled to pick a probe assembly from the probe bar gantry and deliver the probe assembly to the storage rack. The probe assembly includes a clamping assembly for attaching the probe assembly to the probe bar gantry or the storage rack. The probe assembly may include an array of contact pins configured to mate with conductive pads on the device under test when the probe assembly is installed on the probe bar gantry assembly.
    Type: Application
    Filed: January 7, 2011
    Publication date: December 20, 2012
    Applicant: PHOTON DYNAMICS, INC.
    Inventors: Kent Nguyen, Kaushal Gangakhedkar, David Baldwin, Nile Light, Steve Aochi, Yan Wang, Atila Ersahin, Hai Tran, Thomas H. Bailey, Kiran Jitendra, Alan Cable, Dave Smiley, Thomas E. Wishard
  • Patent number: 7468611
    Abstract: A system performs continuous full linear scan of a flat media. The system includes, in part, a chuck, and at least first, second and third gantries. The chuck is adapted to support the flat media during the test. The first gantry includes at least one linear array of non-contacting sensors that spans the width of the flat media and is adapted to move across an entire length of the flat media. Each of the second and third gantries includes a probe head that spans the width of the flat media and each is adapted to apply an electrical signal to the flat media. Each probe head is further adapted to move along a direction substantially perpendicular to the surface of the flat media during the times when the first gantry is in motion and while test signals are being continuously applied.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 23, 2008
    Assignee: Photon Dynamics, Inc.
    Inventors: Kent Nguyen, Eric Thompson, Hai Tran, Kaushal Gangakhedkar, Robert Barnett, Daniel Toet, David Baldwin, Steve Aochi, Neil Nguyen
  • Publication number: 20080094081
    Abstract: A system performs continuous full linear scan of a flat media. The system includes, in part, a chuck, and at least first, second and third gantries. The chuck is adapted to support the flat media during the test. The first gantry includes at least one linear array of non-contacting sensors that spans the width of the flat media and is adapted to move across an entire length of the flat media. Each of the second and third gantries includes a probe head that spans the width of the flat media and each is adapted to apply an electrical signal to the flat media. Each probe head is further adapted to move along a direction substantially perpendicular to the surface of the flat media during the times when the first gantry is in motion and while test signals are being continuously applied.
    Type: Application
    Filed: October 19, 2007
    Publication date: April 24, 2008
    Applicant: Photon Dynamics, Inc.
    Inventors: Kent Nguyen, Eric Thompson, Hai Tran, Kaushal Gangakhedkar, Robert Barnett, Daniel Toet, David Baldwin, Steve Aochi, Neil Nguyen