Patents by Inventor Kumar Gopalakrishnan

Kumar Gopalakrishnan 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: 20240387792
    Abstract: Metrology systems and processing methods for continuous lithium ion battery (LIB) anode pre-lithiation and solid metal anode protection are provided. In some embodiments, the metrology system integrates at least one complementary non-contact sensor to measure at least one of surface composition, coating thickness, and nanoscale roughness. The metrology system and processing methods can be used to address anode edge quality. The metrology system and methods can facilitate high quality and high yield closed loop anode pre-lithiation and anode protection layer deposition, alloy-type anode pre-lithiation stage control improves LIB coulombic efficiency, and anode coating with pinhole free and electrochemically active protection layers resist dendrite formation.
    Type: Application
    Filed: July 26, 2024
    Publication date: November 21, 2024
    Inventors: David Masayuki ISHIKAWA, Girish Kumar GOPALAKRISHNAN NAIR, Ezhiylmurugan RANGASAMY, David ALVAREZ, Kent Qiujing ZHAO
  • Publication number: 20240347688
    Abstract: A method and apparatus for fabricating electrodes used in energy storage devices are provided. In some implementations a surface of the electrode is activated for (a) a pre-treatment process to remove loosely held particles from the electrode surface; (b) a pre-treatment process to activate the surface of the electrode material for improved bonding or wetting for subsequently deposited materials; (c) a post-treatment of the pre-lithiation layer to improve subsequent bonding with additionally deposited layer, for example, passivation layers; and/or (d) a post-treatment of the pre-lithiation layer to improve/accelerate absorption of the lithium into the underlying electrode material.
    Type: Application
    Filed: June 24, 2024
    Publication date: October 17, 2024
    Inventors: Subramanya P. HERLE, Girish Kumar GOPALAKRISHNAN NAIR, Daniel STOCK, Sambhu Nath KUNDU, Ezhiylmurugan RANGASAMY
  • Patent number: 12080869
    Abstract: Metrology systems and processing methods for continuous lithium ion battery (LIB) anode pre-lithiation and solid metal anode protection are provided. In some embodiments, the metrology system integrates at least one complementary non-contact sensor to measure at least one of surface composition, coating thickness, and nanoscale roughness. The metrology system and processing methods can be used to address anode edge quality. The metrology system and methods can facilitate high quality and high yield closed loop anode pre-lithiation and anode protection layer deposition, alloy-type anode pre-lithiation stage control improves LIB coulombic efficiency, and anode coating with pinhole free and electrochemically active protection layers resist dendrite formation.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: September 3, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: David Masayuki Ishikawa, Girish Kumar Gopalakrishnan Nair, Ezhiylmurugan Rangasamy, David Alvarez, Kent Qiujing Zhao
  • Patent number: 12021219
    Abstract: A method and apparatus for fabricating electrodes used in energy storage devices are provided. In some implementations a surface of the electrode is activated for (a) a pre-treatment process to remove loosely held particles from the electrode surface; (b) a pre-treatment process to activate the surface of the electrode material for improved bonding or wetting for subsequently deposited materials; (c) a post-treatment of the pre-lithiation layer to improve subsequent bonding with additionally deposited layer, for example, passivation layers; and/or (d) a post-treatment of the pre-lithiation layer to improve/accelerate absorption of the lithium into the underlying electrode material.
    Type: Grant
    Filed: April 7, 2022
    Date of Patent: June 25, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Subramanya P. Herle, Girish Kumar Gopalakrishnan Nair, Daniel Stock, Sambhu Kundu, Ezhiylmurugan Rangasamy
  • Patent number: 11735723
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: August 22, 2023
    Assignee: Applied Materials, Inc.
    Inventors: Girish Kumar Gopalakrishnan Nair, Subramanya P. Herle, Karl J. Armstrong
  • Publication number: 20230113276
    Abstract: Methods and apparatuses for processing lithium batteries with a laser source having a wide process window, high efficiency, and low cost are provided. The laser source is adapted to achieve high average power and a high frequency of picosecond pulses. The laser source can produce a line-shaped beam either in a fixed position or in scanning mode. The system can be operated in a dry room or vacuum environment. The system can include a debris removal mechanism, for example, inert gas flow, to the processing site to remove debris produced during the patterning process.
    Type: Application
    Filed: September 16, 2022
    Publication date: April 13, 2023
    Inventors: Wei-Sheng LEI, Girish Kumar GOPALAKRISHNAN NAIR, Kent Qiujing ZHAO, Daniel STOCK, Tobias STOLLEY, Thomas DEPPISCH, Jean DELMAS, Kenneth S. LEDFORD, Subramanya P. HERLE, Kiran VACHHANI, Mahendran CHIDAMBARAM, Roland TRASSL, Neil MORRISON, Frank SCHNAPPENBERGER, Kevin Laughton CUNNINGHAM, Stefan BANGERT, James CUSHING, Visweswaren SIVARAMAKRISHNAN
  • Publication number: 20230006197
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 5, 2023
    Inventors: Girish Kumar GOPALAKRISHNAN NAIR, Subramanya P. HERLE, Karl J. ARMSTRONG
  • Publication number: 20220328803
    Abstract: A method and apparatus for fabricating electrodes used in energy storage devices are provided. In some implementations a surface of the electrode is activated for (a) a pre-treatment process to remove loosely held particles from the electrode surface; (b) a pre-treatment process to activate the surface of the electrode material for improved bonding or wetting for subsequently deposited materials; (c) a post-treatment of the pre-lithiation layer to improve subsequent bonding with additionally deposited layer, for example, passivation layers; and/or (d) a post-treatment of the pre-lithiation layer to improve/accelerate absorption of the lithium into the underlying electrode material.
    Type: Application
    Filed: April 7, 2022
    Publication date: October 13, 2022
    Inventors: SUBRAMANYA P. HERLE, Girish Kumar Gopalakrishnan Nair, Daniel Stock, Sambhu Kundu, Ezhiylmurugan Rangasamy
  • Patent number: 11462733
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: October 4, 2022
    Assignee: Applied Materials, Inc.
    Inventors: Girish Kumar Gopalakrishnan Nair, Subramanya P. Herle, Karl J. Armstrong
  • Publication number: 20220190306
    Abstract: Metrology systems and processing methods for continuous lithium ion battery (LIB) anode pre-lithiation and solid metal anode protection are provided. In some embodiments, the metrology system integrates at least one complementary non-contact sensor to measure at least one of surface composition, coating thickness, and nanoscale roughness. The metrology system and processing methods can be used to address anode edge quality. The metrology system and methods can facilitate high quality and high yield closed loop anode pre-lithiation and anode protection layer deposition, alloy-type anode pre-lithiation stage control improves LIB coulombic efficiency, and anode coating with pinhole free and electrochemically active protection layers resist dendrite formation.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 16, 2022
    Inventors: David Masayuki ISHIKAWA, Girish Kumar GOPALAKRISHNAN NAIR, Ezhiylmurugan RANGASAMY, David ALVAREZ, Kent Qiujing ZHAO
  • Publication number: 20220158159
    Abstract: Methods, systems, and apparatuses for coating flexible substrates are provided. A coating system includes an unwinding module housing a feed reel capable of providing a continuous sheet of flexible material, a winding module housing a take-up reel capable of storing the continuous sheet of flexible material, and a processing module arranged downstream from the unwinding module. The processing module includes a plurality of sub-chambers arranged in sequence, each configured to perform one or more processing operations to the continuous sheet of flexible material. The processing module includes a coating drum capable of guiding the continuous sheet of flexible material past the plurality of sub-chambers along a travel direction. The sub-chambers are radially disposed about the coating drum and at least one of the sub-chambers includes a deposition module. The deposition module includes a pair of electron beam sources positioned side-by-side along a transverse direction perpendicular to the travel direction.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Inventors: David Masayuki ISHIKAWA, Ezhiylmurugan RANGASAMY, Kiran VACHHANI, Subramanya P. HERLE, Girish Kumar GOPALAKRISHNAN NAIR
  • Publication number: 20220052307
    Abstract: A method and system for fabricating a pre-lithiated electrode structure are provided. The method includes supplying a first continuous web substrate from an unwinder roller to a winder roller. The first continuous web substrate includes a layer of lithium metal. The method further includes supplying a second continuous web substrate comprising a layer of patterned anode material adjacent to the first continuous web substrate. The first continuous web substrate and the second continuous web substrate are wound together on the unwinder roller, wherein a surface of the layer of anode material contacts a surface of the layer of lithium metal. Pressure is applied to the first continuous web substrate and the second continuous web substrate to pre-lithiate the patterned anode material, wherein applying pressure comprises tensioning at least one of the unwinder roller and the winder roller.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 17, 2022
    Inventors: Ezhiylmurugan RANGASAMY, Jean DELMAS, Bernard FREY, Subramanya P. HERLE, Girish Kumar GOPALAKRISHNAN NAIR
  • Publication number: 20210210752
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Application
    Filed: March 8, 2021
    Publication date: July 8, 2021
    Inventors: Girish Kumar GOPALAKRISHNAN NAIR, Subramanya P. HERLE, Karl J. ARMSTRONG
  • Patent number: 10944103
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: March 9, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Girish Kumar Gopalakrishnan Nair, Subramanya P. Herle, Karl Armstrong
  • Publication number: 20190140267
    Abstract: Implementations described herein generally relate to metal electrodes, more specifically lithium-containing anodes, high performance electrochemical devices, such as secondary batteries, including the aforementioned lithium-containing electrodes, and methods for fabricating the same. In one implementation, an anode electrode structure is provided. The anode electrode structure comprises a current collector comprising copper. The anode electrode structure further comprises a lithium metal film formed on the current collector. The anode electrode structure further comprises a solid electrolyte interface (SEI) film stack formed on the lithium metal film. The SEI film stack comprises a chalcogenide film formed on the lithium metal film. In one implementation, the SEI film stack further comprises a lithium oxide film formed on the chalcogenide film. In one implementation, the SEI film stack further comprises a lithium carbonate film formed on the lithium oxide film.
    Type: Application
    Filed: October 2, 2018
    Publication date: May 9, 2019
    Inventors: Girish Kumar GOPALAKRISHNAN NAIR, Subramanya P. HERLE, Karl ARMSTRONG
  • Patent number: 10085912
    Abstract: An adjustable air bladder apparatus is provided. The apparatus includes an outer enclosure, a first interior section within the outer enclosure that contains a plurality of air bladders, a second interior section within the outer enclosure that contains a support layer, and an air pump pneumatically coupled to the plurality of air bladders, where the air pump is configured to selectively supply pressurized air to the air bladders independently through a pneumatic coupling. The pneumatic coupling includes one or more supply valves, outlet valves, and pressure sensors coupled to each air bladder or to one or more groupings of air bladders. A control device is provided for monitoring the pressure within the air bladders and for controlling an amount of air provided to or released from the bladders or groupings of bladders. A method of providing rolling massage with the apparatus is also disclosed.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 2, 2018
    Assignee: L&P Property Management Company
    Inventors: William Robert Rohr, Vinod Kumar Gopalakrishnan
  • Patent number: 9930970
    Abstract: An adjustable bed is provided. The adjustable bed can include an outer support perimeter that provides structural support to various components of the adjustable bed. The outer support perimeter can include a plurality of panels, where two panels can be coupled together by a panel connecting member which can be received inside a void of both panels. The panel connecting member can be secured to the two panels using one or more fasteners in such a manner that the fasteners are not visible on the outside surface of the outer support perimeter. The adjustable bed can include a storage compartment positioned beneath a foot segment of a mattress support member. The storage compartment can be accessed by pivoting the foot segment of the mattress support member up and away from the adjustable bed.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: April 3, 2018
    Assignee: L&P Property Management Company
    Inventors: Vinod Kumar Gopalakrishnan, Jacob J. Neuenswander
  • Patent number: 9918555
    Abstract: An adjustable bed is provided. The adjustable bed can include an outer support perimeter that provides structural support to various components of the adjustable bed. The outer support perimeter can include a plurality of panels, where two panels can be coupled together by a panel connecting member which can be received inside a void of both panels. The panel connecting member can be secured to the two panels using one or more fasteners in such a manner that the fasteners are not visible on the outside surface of the outer support perimeter. The adjustable bed can include a storage compartment positioned beneath a foot segment of a mattress support member. The storage compartment can be accessed by pivoting the foot segment of the mattress support member up and away from the adjustable bed.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 20, 2018
    Assignee: L&P Property Management Company
    Inventors: Vinod Kumar Gopalakrishnan, Jacob J. Neuenswander
  • Patent number: 9639633
    Abstract: A system and method provides information services related to multimodal inputs. Several different types of data used as multimodal inputs are described. Also described are various methods involving the generation of contexts using multimodal inputs, synthesizing context-information service mappings and identifying and providing information services.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: May 2, 2017
    Assignee: Intel Corporation
    Inventor: Kumar Gopalakrishnan
  • Publication number: 20170007033
    Abstract: An adjustable bed is provided. The adjustable bed can include an outer support perimeter that provides structural support to various components of the adjustable bed. The outer support perimeter can include a plurality of panels, where two panels can be coupled together by a panel connecting member which can be received inside a void of both panels. The panel connecting member can be secured to the two panels using one or more fasteners in such a manner that the fasteners are not visible on the outside surface of the outer support perimeter. The adjustable bed can include a storage compartment positioned beneath a foot segment of a mattress support member. The storage compartment can be accessed by pivoting the foot segment of the mattress support member up and away from the adjustable bed.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 12, 2017
    Inventors: VINOD KUMAR GOPALAKRISHNAN, JACOB J. NEUENSWANDER