Patents by Inventor Bhupesh Chandra

Bhupesh Chandra 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: 11917461
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify, while camped on a first cell associated with a first radio access technology (RAT), a power management level for a communication using a second RAT, wherein the power management level indicates an available power for the communication using the second RAT, and wherein the available power is based at least in part on an exposure rate or an absorption rate. The UE may delay a transmission of a measurement report on the first cell based at least in part on the identification of the power management level. Numerous other aspects are provided.
    Type: Grant
    Filed: October 21, 2021
    Date of Patent: February 27, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Arvind Vardarajan Santhanam, Raghu Narayan Challa, Brian Clarke Banister, Troy Curtiss, Bhupesh Manoharlal Umatt, Ramesh Chandra Chirala, Lin Lu
  • Patent number: 11671066
    Abstract: An artificially oriented piezoelectric films for integrated filters and methods of manufacture. The method includes: forming a piezoelectric film with effective crystalline orientations of a polar axis rotated 90 degrees from a natural orientation for planar deposited piezoelectric films; and forming electrodes on a planar surface of the piezoelectric film. The piezoelectric film has an effective crystalline orientation of the polar axis in a horizontal orientation, with respect to the electrodes, and an effective crystalline orientation of the polar axis in a vertical direction adjacent to an underlying substrate.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: June 6, 2023
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Vincent J. McGahay, Bhupesh Chandra
  • Patent number: 10566537
    Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. The nanotube-graphene hybrid film includes a substrate; nanotube film deposited over the substrate to produce a layer of nanotube film; and graphene deposited over the layer of nanotube film to produce a nanotube-graphene hybrid film.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: February 18, 2020
    Assignees: International Business Machines Corporation, Egypt Nanotechnology Center
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Publication number: 20200036363
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to artificially oriented piezoelectric films for integrated filters and methods of manufacture. The structure includes: a piezoelectric film with effective crystalline orientations of the polar axis rotated 90 degrees from a natural orientation for planar deposited films; and a conductor pattern formed on a surface of the piezoelectric film.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Inventors: Vincent J. McGahay, Bhupesh Chandra
  • Patent number: 10483943
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to artificially oriented piezoelectric films for integrated filters and methods of manufacture. The structure includes: a piezoelectric film with effective crystalline orientations of the polar axis rotated 90 degrees from a natural orientation for planar deposited films; and a conductor pattern formed on a surface of the piezoelectric film.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: November 19, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Vincent J. McGahay, Bhupesh Chandra
  • Publication number: 20180375494
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to artificially oriented piezoelectric films for integrated filters and methods of manufacture. The structure includes: a piezoelectric film with effective crystalline orientations of the polar axis rotated 90 degrees from a natural orientation for planar deposited films; and a conductor pattern formed on a surface of the piezoelectric film.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 27, 2018
    Inventors: Vincent J. McGahay, Bhupesh Chandra
  • Publication number: 20180197734
    Abstract: Reducing wormhole formation during n-type transistor fabrication includes providing a starting structure, the starting structure including a semiconductor substrate, a n-type source region and a n-type drain region of a transistor. The method further includes removing a portion of each of the n-type source region and the n-type drain region, the removing creating a source trench and a drain trench, and forming a buffer layer of silicon-based material(s) over the n-type source region and n-type drain region that is sufficiently thick to inhibit interaction between metal contaminants that may be present below surfaces of the n-type source trench and/or the n-type drain trench, and halogens subsequently introduced prior to source and drain formation. A resulting semiconductor structure is also provided.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 12, 2018
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Bhupesh CHANDRA, Annie LEVESQUE, Matthew W. STOKER, Shreesh NARASIMHA, Viorel ONTALUS, Michael STEIGERWALT, Joshua BELL
  • Patent number: 9953873
    Abstract: Chip structures and fabrication methods for forming such chip structures. A first device structure has a structural feature comprised of a first dielectric material and a second device structure has a structural feature comprised of a second dielectric material. A semiconductor layer has a first section adjacent to the structural feature of the first device structure and a second section adjacent to the structural feature of the second device structure. The first section of the semiconductor layer has a popped relationship relative to the structural feature comprised of the first dielectric material. The second section of the semiconductor layer includes a portion that has a pinned relationship relative to a portion of the structural feature comprised of the second dielectric material.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: April 24, 2018
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Bhupesh Chandra, Claude Ortolland, Gregory G. Freeman, Viorel Ontalus, Christopher D. Sheraw, Timothy J. McArdle, Paul Chang
  • Patent number: 9954175
    Abstract: A nanotube-graphene hybrid nano-component and method for forming a cleaned nanotube-graphene hybrid nano-component. The nanotube-graphene hybrid nano-component includes a gate; a gate dielectric formed on the gate; a channel comprising a carbon nanotube-graphene hybrid nano-component formed on the gate dielectric; a source formed over a first region of the carbon nanotube-graphene hybrid nano-component; and a drain formed over a second region of the carbon nanotube-graphene hybrid nano-component to form a field effect transistor.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 24, 2018
    Assignees: International Business Machines Corporation, Egypt Nanotechnology Center
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Patent number: 9887361
    Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. A method includes depositing nanotube film over a metal foil to produce a layer of nanotube film, placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film, and transferring the nanotube-graphene hybrid film over a substrate.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: February 6, 2018
    Assignees: International Business Machines Corporation, Egypt Nanotechnology Center
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Publication number: 20170345719
    Abstract: Chip structures and fabrication methods for forming such chip structures. A first device structure has a structural feature comprised of a first dielectric material and a second device structure has a structural feature comprised of a second dielectric material. A semiconductor layer has a first section adjacent to the structural feature of the first device structure and a second section adjacent to the structural feature of the second device structure. The first section of the semiconductor layer has a popped relationship relative to the structural feature comprised of the first dielectric material. The second section of the semiconductor layer includes a portion that has a pinned relationship relative to a portion of the structural feature comprised of the second dielectric material.
    Type: Application
    Filed: May 24, 2016
    Publication date: November 30, 2017
    Inventors: Bhupesh Chandra, Claude Ortolland, Gregory G. Freeman, Viorel Ontalus, Christopher D. Sheraw, Timothy J. McArdle, Paul Chang
  • Patent number: 9722045
    Abstract: The disclosure relates to semiconductor structures and, more particularly, to one or more devices with an engineered layer for modulating voltage threshold (Vt) and methods of manufacture. The method includes finding correlation of thickness of a buffer layer to out-diffusion of dopant into extension regions during annealing of a doped layer formed on the buffer layer. The method further includes determining a predetermined thickness of the buffer layer to adjust device performance characteristics based on the correlation of thickness of the buffer layer to the out-diffusion. The method further includes forming the buffer layer adjacent to gate structures to the predetermined thickness.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: August 1, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Bhupesh Chandra, Viorel Ontalus, Timothy J. McArdle, Paul Chang, Claude Ortolland, Judson R. Holt
  • Patent number: 9663369
    Abstract: A process comprises combining a Ce (IV) salt dissolved in a solvent comprising water with a carbon material comprising CNT or graphene wherein the Ce (IV) salt is selected from a Ce (IV) ammonium salt of a nitrogen oxide acid, Ce (IV) ammonium salt of a sulfur oxide acid, Ce (IV) salt of a lower alkyl organo sulfur acid, or Ce (IV) salt of a lower alkane organo sulfur acid. In one embodiment the Ce (IV) salt is selected from Ce (IV) ammonium nitrate, Ce (IV) ammonium sulfate, Ce (IV) lower alkyllsulfonate, or Ce (IV) trifluoro lower alkanesulfonate. A product is produced by this process. An article of manufacture comprises this product on a substrate.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 30, 2017
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Bhupesh Chandra, George S. Tulevski
  • Publication number: 20170117387
    Abstract: The disclosure relates to semiconductor structures and, more particularly, to one or more devices with an engineered layer for modulating voltage threshold (Vt) and methods of manufacture. The method includes finding correlation of thickness of a buffer layer to out-diffusion of dopant into extension regions during annealing of a doped layer formed on the buffer layer. The method further includes determining a predetermined thickness of the buffer layer to adjust device performance characteristics based on the correlation of thickness of the buffer layer to the out-diffusion. The method further includes forming the buffer layer adjacent to gate structures to the predetermined thickness.
    Type: Application
    Filed: October 23, 2015
    Publication date: April 27, 2017
    Inventors: Bhupesh Chandra, Viorel Ontalus, Timothy J. McArdle, Paul Chang, Claude Ortolland, Judson R. Holt
  • Patent number: 9324475
    Abstract: Transparent conducting electrodes include a doped single walled carbon nanotube film and methods for forming the doped single walled carbon nanotube (SWCNT) by solution processing. The method generally includes depositing single walled carbon nanotubes dispersed in a solvent and a surfactant onto a substrate to form a single walled carbon nanotube film thereon; removing all of the surfactant from the carbon nanotube film; and exposing the single walled carbon nanotube film to a single electron oxidant in a solution such that one electron is transferred from the single walled carbon nanotubes to each molecule of the single electron oxidant.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: April 26, 2016
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, EGYPT NANOTECHNOLOGY CENTER
    Inventors: Mostafa M. El-Ashry, Ali Afzali-Ardakani, Bhupesh Chandra, George S. Tulevski
  • Patent number: 9287399
    Abstract: A faceted intrinsic buffer semiconductor material is deposited on sidewalls of a source trench and a drain trench by selective epitaxy. A facet adjoins each edge at which an outer sidewall of a gate spacer adjoins a sidewall of the source trench or the drain trench. A doped semiconductor material is subsequently deposited to fill the source trench and the drain trench. The doped semiconductor material can be deposited such that the facets of the intrinsic buffer semiconductor material are extended and inner sidewalls of the deposited doped semiconductor material merges in each of the source trench and the drain trench. The doped semiconductor material can subsequently grow upward. Faceted intrinsic buffer semiconductor material portions allow greater outdiffusion of dopants near faceted corners while suppressing diffusion of dopants in regions of uniform width, thereby suppressing short channel effects.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 15, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bhupesh Chandra, Paul Chang, Gregory G. Freeman, Dechao Guo, Judson R. Holt, Arvind Kumar, Timothy J. McArdle, Shreesh Narasimha, Viorel Ontalus, Sangameshwar Saudari, Christopher D. Sheraw, Matthew W. Stoker
  • Publication number: 20150348667
    Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. The nanotube-graphene hybrid film includes a substrate; nanotube film deposited over the substrate to produce a layer of nanotube film; and graphene deposited over the layer of nanotube film to produce a nanotube-graphene hybrid film.
    Type: Application
    Filed: August 6, 2015
    Publication date: December 3, 2015
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Publication number: 20150349264
    Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. A method includes depositing nanotube film over a metal foil to produce a layer of nanotube film, placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film, and transferring the nanotube-graphene hybrid film over a substrate.
    Type: Application
    Filed: August 6, 2015
    Publication date: December 3, 2015
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Publication number: 20150340617
    Abstract: A nanotube-graphene hybrid nano-component and method for forming a cleaned nanotube-graphene hybrid nano-component. The nanotube-graphene hybrid nano-component includes a gate; a gate dielectric formed on the gate; a channel comprising a carbon nanotube-graphene hybrid nano-component formed on the gate dielectric; a source formed over a first region of the carbon nanotube-graphene hybrid nano-component; and a drain formed over a second region of the carbon nanotube-graphene hybrid nano-component to form a field effect transistor.
    Type: Application
    Filed: August 6, 2015
    Publication date: November 26, 2015
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski
  • Patent number: 9177688
    Abstract: A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. The method includes depositing nanotube film over a substrate to produce a layer of nanotube film, removing impurities from a surface of the layer of nanotube film not contacting the substrate to produce a cleaned layer of nanotube film, depositing a layer of graphene over the cleaned layer of nanotube film to produce a nanotube-graphene hybrid film, and removing impurities from a surface of the nanotube-graphene hybrid film to produce a cleaned nanotube-graphene hybrid film, wherein the hybrid film has improved electrical performance. Another method includes depositing nanotube film over a metal foil to produce a layer of nanotube film, placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film, and transferring the nanotube-graphene hybrid film over a substrate.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: November 3, 2015
    Assignees: International Business Machines Corporation, Egypt Nanotechnology Center
    Inventors: Ageeth A. Bol, Bhupesh Chandra, Amal Kasry, Ahmed Maarouf, Glenn J. Martyna, George S. Tulevski