Patents by Inventor Praveen Joseph

Praveen Joseph 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: 11876136
    Abstract: Embodiments of the invention are directed to a semiconductor device structure that includes a first channel region over a substrate, a second channel region over the first channel region, and a merged source or drain (S/D) region over the substrate and adjacent to the first channel region and the second channel region. The merged S/D region is communicatively coupled to the first channel region and the second channel region. A wrap-around S/D contact is configured such that it is on a top surface, sidewalls, and a bottom surface of the merged S/D region.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: January 16, 2024
    Assignee: International Business Machine Corporation
    Inventors: Yi Song, Praveen Joseph, Andrew Greene, Kangguo Cheng
  • Patent number: 11864069
    Abstract: Techniques are described herein for network sliced based billing. In one example, a control center obtains, from a charging system, a charging data record that includes an indication of a network slice associated with a chargeable telecommunications event. Based on the indication of the network slice, the control center identifies a charging rate for the chargeable telecommunications event and applies the charging rate to the chargeable telecommunications event.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 2, 2024
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Amit Agarwal, Rajpal Bhoria, Praveen Joseph
  • Patent number: 11756961
    Abstract: A method includes forming a first semiconducting channel comprising a plurality of vertical nanowires and a second semiconducting channel comprising a plurality of vertical nanowires. The first semiconducting channel and the second semiconducting channel are formed in a stacked configuration. The plurality of vertical nanowires of the first semiconducting channel are formed in alternating positions relative to the plurality of vertical nanowires of the second semiconducting channel.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 12, 2023
    Assignee: International Business Machines Corporation
    Inventors: Tsung-Sheng Kang, Tao Li, Ardasheir Rahman, Praveen Joseph, Indira Seshadri, Ekmini Anuja De Silva
  • Patent number: 11699592
    Abstract: An initial semiconductor structure includes an underlying substrate, a hard mask stack, an organic planarization layer (OPL), a first complementary material, and a patterned photoresist layer patterned into a plurality of photoresist pillars defining a plurality of photoresist trenches. The first material is partially etched inward of the trenches, to provide trench regions, and the photoresist is removed. The trench regions are filled with a second complementary material, preferentially etchable with respect to the first material. A polymer brush is grafted on the second material but not the first material, to form polymer brush regions with intermediate regions not covered by the brush. The first material is anisotropically etched the at the intermediate regions but not the brush regions. The OPL is etched inward of the intermediate regions, to provide a plurality of OPL pillars defining a plurality of OPL trenches inverted with respect to the photoresist pillars.
    Type: Grant
    Filed: September 6, 2021
    Date of Patent: July 11, 2023
    Assignee: International Business Machines Corporation
    Inventors: Nelson Felix, Ekmini Anuja De Silva, Praveen Joseph, Ashim Dutta
  • Publication number: 20230099965
    Abstract: Airgap isolation for back-end-of-the-line interconnect structures includes a dielectric liner formed above a top surface and opposite sidewalls of each of a plurality of metal lines on a substrate, the dielectric liner disposed above a top surface of the substrate not covered by the plurality of metal lines, portions of the dielectric liner located on the opposite sidewalls of each of the plurality of metal lines are separated by a space. A dielectric cap is disposed above an uppermost surface of portions of the dielectric liner above each of the plurality of metal lines and above the space, the dielectric cap pinches-off the space between portions of the dielectric liner located on the opposite sidewalls of each of the plurality of metal lines for providing airgaps between adjacent metal lines.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 30, 2023
    Inventors: Ashim Dutta, Ekmini Anuja De Silva, Praveen Joseph, Jennifer Church
  • Patent number: 11562908
    Abstract: A novel dielectric cap structure for VTFET device fabrication is provided. In one aspect, a method of forming a VTFET device includes: patterning fins in a substrate using fin hardmasks, including a first fin(s) and a second fin(s); depositing a liner over the fins and the fin hardmasks; selectively forming first hardmask caps on top of the fin hardmasks/liner over the first fin(s); forming first bottom source and drain at a base of the first fin(s) while the fin hardmasks/liner over the first fin(s) are preserved by the first hardmask caps; selectively forming second hardmask caps on top of the fin hardmasks/liner over the second fin(s); and forming second bottom source and drains at a base of the second fin(s) while the fin hardmasks/liner over the second fin(s) are preserved by the second hardmask caps. A device structure is also provided.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 24, 2023
    Assignee: International Business Machines Corporation
    Inventors: Tao Li, Ekmini Anuja De Silva, Tsung-Sheng Kang, Praveen Joseph
  • Patent number: 11496628
    Abstract: In one example, a charging filtering function may obtain a request for one or more rules that control whether or when one or more charging data records associated with a user equipment are to be provided to one or more billing systems. The request includes an identification of the user equipment. Based on the identification of the user equipment, the charging filtering function may identify the one or more rules. The charging filtering function may provide the one or more rules to control whether or when the one or more charging data records associated with the user equipment are to be provided to the one or more billing systems.
    Type: Grant
    Filed: October 2, 2020
    Date of Patent: November 8, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Rajpal Bhoria, Praveen Joseph, Manoj Kumar Kushwaha, Timothy Peter Stammers
  • Patent number: 11398377
    Abstract: A bilayer hardmask is formed on layers, the bilayer hardmask including a first hardmask layer and a second hardmask layer on the first hardmask layer. A first pattern is formed in the second hardmask layer, the first pattern including tapered sidewalls forming a first spacing in the second hardmask layer. A second pattern is formed in the first hardmask layer based on the first pattern, the second pattern comprising vertical sidewalls forming a second spacing in the first hardmask layer, the second spacing being reduced in size from the first spacing.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: July 26, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Praveen Joseph, Gauri Karve, Yann Mignot
  • Publication number: 20220157985
    Abstract: Embodiments of the invention are directed to a semiconductor device structure that includes a first channel region over a substrate, a second channel region over the first channel region, and a merged source or drain (S/D) region over the substrate and adjacent to the first channel region and the second channel region. The merged S/D region is communicatively coupled to the first channel region and the second channel region. A wrap-around S/D contact is configured such that it is on a top surface, sidewalls, and a bottom surface of the merged S/D region.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 19, 2022
    Inventors: Yi Song, Praveen Joseph, Andrew Greene, Kangguo Cheng
  • Publication number: 20220149042
    Abstract: A method includes forming a first semiconducting channel comprising a plurality of vertical nanowires and a second semiconducting channel comprising a plurality of vertical nanowires. The first semiconducting channel and the second semiconducting channel are formed in a stacked configuration. The plurality of vertical nanowires of the first semiconducting channel are formed in alternating positions relative to the plurality of vertical nanowires of the second semiconducting channel.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Inventors: Tsung-Sheng Kang, Tao Li, Ardasheir Rahman, Praveen Joseph, Indira Seshadri, Ekmini Anuja De Silva
  • Publication number: 20220141630
    Abstract: Techniques are described herein for network sliced based billing. In one example, a control center obtains, from a charging system, a charging data record that includes an indication of a network slice associated with a chargeable telecommunications event. Based on the indication of the network slice, the control center identifies a charging rate for the chargeable telecommunications event and applies the charging rate to the chargeable telecommunications event.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 5, 2022
    Inventors: Amit Agarwal, Rajpal Bhoria, Praveen Joseph
  • Patent number: 11302573
    Abstract: A method of forming a semiconductor structure includes forming one or more interconnect lines, the one or more interconnect lines including trenches of a first metal material surrounded by a first interlayer dielectric layer. The method also includes forming pillars of a second metal material different than the first metal material over the one or more interconnect lines utilizing a metal on metal growth process, and forming an etch stop dielectric layer, the pillars of the second metal material shaping the etch stop dielectric layer. The method further includes forming one or more vias to the one or more interconnect lines, the one or more vias being fully aligned to the one or more interconnect lines using the etch stop dielectric layer.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: April 12, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ekmini Anuja De Silva, Ashim Dutta, Praveen Joseph, Nelson Felix
  • Publication number: 20220109759
    Abstract: In one example, a charging filtering function may obtain a request for one or more rules that control whether or when one or more charging data records associated with a user equipment are to be provided to one or more billing systems. The request includes an identification of the user equipment. Based on the identification of the user equipment, the charging filtering function may identify the one or more rules. The charging filtering function may provide the one or more rules to control whether or when the one or more charging data records associated with the user equipment are to be provided to the one or more billing systems.
    Type: Application
    Filed: October 2, 2020
    Publication date: April 7, 2022
    Inventors: Rajpal Bhoria, Praveen Joseph, Manoj Kumar Kushwaha, Timothy Peter Stammers
  • Patent number: 11296226
    Abstract: Embodiments of the invention are directed to a method of forming a semiconductor device. In a non-limiting example, the method includes forming a first channel region over a substrate, forming a second channel region over the first channel region, and forming a merged source or drain (S/D) region over the substrate and adjacent to the first channel region and the second channel region. The merged S/D region is communicatively coupled to the first channel region and the second channel region. A wrap-around S/D contact is formed such that it is on a top surface, sidewalls, and a bottom surface of the merged S/D region.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: April 5, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yi Song, Praveen Joseph, Andrew Greene, Kangguo Cheng
  • Patent number: 11251182
    Abstract: A semiconductor structure includes a first semiconducting channel having a plurality of vertical nanowires and a second semiconducting channel having a plurality of vertical nanowires. The first semiconducting channel and the second semiconducting channel are configured to be in a stacked configuration. The plurality of vertical nanowires of the first semiconducting channel are configured to be in alternating positions relative to the plurality of vertical nanowires of the second semiconducting channel.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 15, 2022
    Assignee: International Business Machines Corporation
    Inventors: Tsung-Sheng Kang, Tao Li, Ardasheir Rahman, Praveen Joseph, Indira Seshadri, Ekmini Anuja De Silva
  • Publication number: 20210398816
    Abstract: An initial semiconductor structure includes an underlying substrate, a hard mask stack, an organic planarization layer (OPL), a first complementary material, and a patterned photoresist layer patterned into a plurality of photoresist pillars defining a plurality of photoresist trenches. The first material is partially etched inward of the trenches, to provide trench regions, and the photoresist is removed. The trench regions are filled with a second complementary material, preferentially etchable with respect to the first material. A polymer brush is grafted on the second material but not the first material, to form polymer brush regions with intermediate regions not covered by the brush. The first material is anisotropically etched the at the intermediate regions but not the brush regions. The OPL is etched inward of the intermediate regions, to provide a plurality of OPL pillars defining a plurality of OPL trenches inverted with respect to the photoresist pillars.
    Type: Application
    Filed: September 6, 2021
    Publication date: December 23, 2021
    Inventors: Nelson Felix, Ekmini Anuja De Silva, Praveen Joseph, Ashim Dutta
  • Publication number: 20210335618
    Abstract: A novel dielectric cap structure for VTFET device fabrication is provided. In one aspect, a method of forming a VTFET device includes: patterning fins in a substrate using fin hardmasks, including a first fin(s) and a second fin(s); depositing a liner over the fins and the fin hardmasks; selectively forming first hardmask caps on top of the fin hardmasks/liner over the first fin(s); forming first bottom source and drain at a base of the first fin(s) while the fin hardmasks/liner over the first fin(s) are preserved by the first hardmask caps; selectively forming second hardmask caps on top of the fin hardmasks/liner over the second fin(s); and forming second bottom source and drains at a base of the second fin(s) while the fin hardmasks/liner over the second fin(s) are preserved by the second hardmask caps. A device structure is also provided.
    Type: Application
    Filed: April 28, 2020
    Publication date: October 28, 2021
    Inventors: Tao Li, Ekmini Anuja De Silva, Tsung-Sheng Kang, Praveen Joseph
  • Patent number: 11133195
    Abstract: An initial semiconductor structure includes an underlying substrate, a hard mask stack, an organic planarization layer (OPL), a first complementary material, and a patterned photoresist layer patterned into a plurality of photoresist pillars defining a plurality of photoresist trenches. The first material is partially etched inward of the trenches, to provide trench regions, and the photoresist is removed. The trench regions are filled with a second complementary material, preferentially etchable with respect to the first material. A polymer brush is grafted on the second material but not the first material, to form polymer brush regions with intermediate regions not covered by the brush. The first material is anisotropically etched the at the intermediate regions but not the brush regions. The OPL is etched inward of the intermediate regions, to provide a plurality of OPL pillars defining a plurality of OPL trenches inverted with respect to the photoresist pillars.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 28, 2021
    Assignee: International Business Machines Corporation
    Inventors: Nelson Felix, Ekmini Anuja De Silva, Praveen Joseph, Ashim Dutta
  • Publication number: 20210296438
    Abstract: Semiconductor devices and methods of forming the same include forming a first dielectric layer around a semiconductor fin, formed from a first dielectric material, to a target height lower than a height of the semiconductor fin. A second dielectric layer is deposited on the first dielectric layer and is formed from a second dielectric material. A third dielectric layer, formed from the first dielectric material, is formed on the second dielectric layer. The second dielectric layer is etched away to expose a gap on the semiconductor fin. A portion of the semiconductor fin that is exposed in the gap is oxidized to form an isolation layer.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Inventors: Praveen Joseph, Tao Li, Indira Seshadri, Ekmini A. De Silva
  • Publication number: 20210296314
    Abstract: A semiconductor structure includes a first semiconducting channel having a plurality of vertical nanowires and a second semiconducting channel having a plurality of vertical nanowires. The first semiconducting channel and the second semiconducting channel are configured to be in a stacked configuration. The plurality of vertical nanowires of the first semiconducting channel are configured to be in alternating positions relative to the plurality of vertical nanowires of the second semiconducting channel.
    Type: Application
    Filed: March 17, 2020
    Publication date: September 23, 2021
    Inventors: Tsung-Sheng Kang, Tao Li, Ardasheir Rahman, Praveen Joseph, Indira Seshadri, Ekmini Anuja De Silva