Patents by Inventor Vijay Ramakrishnan

Vijay Ramakrishnan 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: 20240114800
    Abstract: A piezoelectric device comprises: a substrate (12) and a lead magnesium niobate-lead titanate (PMNPT) piezoelectric film on the substrate (12). The PMNPT film comprises: a thermal oxide layer (20) on the substrate (12); a first electrode above on the thermal oxide layer (20); a seed layer (26) above the first electrode; a lead magnesium niobate-lead titanate (PMNPT) piezoelectric layer (16) on the seed layer (26), and a second electrode on the PMNPT piezoelectric layer (16). The PMNPT film comprises a piezoelectric coefficient (d33) of greater than or equal to 200 pm/V.
    Type: Application
    Filed: January 18, 2021
    Publication date: April 4, 2024
    Applicant: Applied Materials, Inc.
    Inventors: Vijay Bhan Sharma, Yuan Xue, Abhijeet Laxman Sangle, Bharatwaj Ramakrishnan, Yi Yang, Suresh Chand Seth, Ankur Anant Kadam
  • Publication number: 20240098655
    Abstract: Techniques described herein are directed toward smart external interference detection and avoidance. An example method includes determining a first received signal strength indicator (RSSI) value of a received first signal across a radio band, wherein the first RSSI value is based at least in part on a second signal transmitted by an interfering device. The first received RSSI value is compared with a threshold value. A first gain adjustment value is determined for a receiver chain of the first computing device and a second gain adjustment value of a transmitter chain based at least in part on the comparison. A first gain of a first amplifier of the receiver chain is adjusted based at least in part on the first gain adjustment value. A second gain of a second amplifier of the transmitter chain is adjusted based at least in part on the second gain adjustment value.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 21, 2024
    Applicant: Apple Inc.
    Inventors: Sathish Shanbhag Kota, Vijay Kumar Ramamurthi, Vijaykrishnan Ramakrishnan
  • Publication number: 20240060403
    Abstract: An electric submersible pump (ESP), comprising: an intake that suctions fluids into the ESP, wherein the fluids include a mixture of gas, water, and oil; a discharge that discharges the fluids from the ESP; an acoustic intake transducer that determines the speed of sound in the fluids suctioned into the ESP at the intake; and a first acoustic discharge transducer that determines the speed of sound in the fluids discharged from the ESP, wherein the speed of sound of the fluid at both intake and discharge is used to calculate a gas volume fraction difference of the multiphase fluid mixture across the intake and discharge of the pump, and wherein the gas volume fraction difference is used as feedback to control the ESP.
    Type: Application
    Filed: August 16, 2022
    Publication date: February 22, 2024
    Applicant: Aramco Services Company
    Inventors: Robert Adams, Vijay Ramakrishnan, Max Deffenbaugh
  • Publication number: 20240027243
    Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A mixture density of the multiphase fluid is determined at least based on the measured differential pressures. A total flow rate of the multiphase fluid is determined at least based on the measured differential pressures. In some cases, flow rates of each of the phases of the multiphase fluid can be determined at least based on the measured differential pressures.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 25, 2024
    Inventor: Vijay Ramakrishnan
  • Publication number: 20240027242
    Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A total flow rate of the multiphase fluid is determined at least based on the measured differential pressures. In some cases, flow rates of each of the phases of the multiphase fluid can be determined at least based on the measured differential pressures.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 25, 2024
    Inventor: Vijay Ramakrishnan
  • Publication number: 20240027317
    Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A mixture density of the multiphase fluid is determined at least based on the measured differential pressures.
    Type: Application
    Filed: July 19, 2022
    Publication date: January 25, 2024
    Inventor: Vijay Ramakrishnan
  • Patent number: 11815380
    Abstract: Near-Infrared (NIR) filter photometry is used to calculate component concentrations in multiphase flows. The disclosed methodology adapts the Beer-Lambert law for nonhomogeneous immiscible mixtures (such as oil and water) by modeling the fluid layer as a nonhomogeneous distribution of its components and deriving a mathematical relationship between measured absorbances, component path lengths, and non-homogeneity factors. The methodology is integrated into a multi-channel filter photometer to measure phase concentrations in oil-and-gas pipelines. The system is proven more accurate than current state of the art based on data from simulations, multiphase flow laboratories and field trials.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: November 14, 2023
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Vijay Ramakrishnan, John Lievois
  • Publication number: 20230019978
    Abstract: Systems, methods, and computer-readable media for correcting transcriptions created through automatic speech recognition. A transcription of speech created using an automatic speech recognition system can be received. One or more domain-specific contexts associated with the speech can be identified and a text span that includes a mistranscribed entry can be recognized from the speech based on the one or more domain-specific contexts. Additionally, features can be extracted from the mistranscribed entry and the extracted features can be matched against an index of domain-specific entries to identify a correct entry of the mistranscribed entry. Subsequently, the transcription can be corrected by replacing with the mistranscribed entry with the correct entry.
    Type: Application
    Filed: September 22, 2022
    Publication date: January 19, 2023
    Inventors: Karthik Raghunathan, Arushi Raghuvanshi, Vijay Ramakrishnan Thimmaiyah, Lucien Serapio Carroll, Varsha Ravikumar Embar
  • Publication number: 20220412784
    Abstract: Near-Infrared (NIR) filter photometry is used to calculate component concentrations in multiphase flows. The disclosed methodology adapts the Beer-Lambert law for nonhomogeneous immiscible mixtures (such as oil and water) by modeling the fluid layer as a nonhomogeneous distribution of its components and deriving a mathematical relationship between measured absorbances, component path lengths, and non-homogeneity factors. The methodology is integrated into a multi-channel filter photometer to measure phase concentrations in oil-and-gas pipelines. The system is proven more accurate than current state of the art based on data from simulations, multiphase flow laboratories and field trials.
    Type: Application
    Filed: September 2, 2022
    Publication date: December 29, 2022
    Inventors: Vijay Ramakrishnan, John Lievois
  • Patent number: 11482213
    Abstract: Systems, methods, and computer-readable media for correcting transcriptions created through automatic speech recognition. A transcription of speech created using an automatic speech recognition system can be received. One or more domain-specific contexts associated with the speech can be identified and a text span that includes a mistranscribed entry can be recognized from the speech based on the one or more domain-specific contexts. Additionally, features can be extracted from the mistranscribed entry and the extracted features can be matched against an index of domain-specific entries to identify a correct entry of the mistranscribed entry. Subsequently, the transcription can be corrected by replacing with the mistranscribed entry with the correct entry.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: October 25, 2022
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Karthik Raghunathan, Arushi Raghuvanshi, Vijay Ramakrishnan Thimmaiyah, Lucien Serapio Carroll, Varsha Ravikumar Embar
  • Patent number: 11448536
    Abstract: Near-Infrared (NIR) filter photometry is used to calculate component concentrations in multiphase flows. The disclosed methodology adapts the Beer-Lambert law for nonhomogeneous immiscible mixtures (such as oil and water) by modeling the fluid layer as a nonhomogeneous distribution of its components and deriving a mathematical relationship between measured absorbances, component path lengths, and non-homogeneity factors. The methodology is integrated into a multi-channel filter photometer to measure phase concentrations in oil-and-gas pipelines. The system is proven more accurate than current state of the art based on data from simulations, multiphase flow laboratories and field trials.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: September 20, 2022
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Vijay Ramakrishnan, John Lievois
  • Publication number: 20220282441
    Abstract: A transportable, flexible rope net gabion useful for scour protection includes a lifting ring, a plurality of polymer ropes connected to the lifting ring, a polymer net connected to the polymer ropes, and a plurality of stones or boulders. Up to 45% of the volume of the polymer net is packed with the stones or boulders, so that the rope net gabion can be evenly positioned around a structure to be supported. The polymer ropes, the polymer net, or both the polymer ropes and the polymer net are made using virgin high density polyethylene (HDPE).
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Inventors: Sanjay Vasudeo RAUT, Thirumalai Purushottam KULKARNI, Vijay RAMAKRISHNAN, Vayu Garware, Gaurav Pathare
  • Publication number: 20210230825
    Abstract: Disclosed herein is an eco-friendly, flexible rope net gabion (5) for facilitating scour protection. Said flexible rope net gabion is packed to the extent of 45% with rocks or boulders. The packing to the extent of 45% allows the flexible rope net gabion to be evenly position around the structure (100) to provide uniform anchorage.
    Type: Application
    Filed: July 13, 2019
    Publication date: July 29, 2021
    Inventors: Sanjay Vasudeo RAUT, Thirumalai Purushottam KULKARNI, Vijay RAMAKRISHNAN
  • Publication number: 20210225475
    Abstract: The present disclosure provides methods, processes, reagents and kits for novel healthcare delivery, treatment and payment, particularly for achieving better economic outcomes in patients treated with specialty drugs. Methods, processes, and kits provide a number of uses, including, for providing assurance, both efficacy and financial, theragnostic-guidance, for providing therapeutic appropriateness, therapeutic guidance, therapeutic effectiveness, and selection of alternative therapeutic strategies, and providing product differentiation and presumably market enrichment for a specialty drug, for authorizing payment and delivering the drug directly from a pharmaceutical company to a patient or her specialty physician through a novel healthcare delivery platform. Medical records and databases using these strategies are also provided.
    Type: Application
    Filed: March 16, 2021
    Publication date: July 22, 2021
    Inventor: Vijay Ramakrishnan
  • Patent number: 10996224
    Abstract: This document relates to materials and methods in assessing and treating mammals (e.g., humans) with precursor plasma cell (PC) disorders. Materials and methods for determining if a mammal (e.g., a mammal having a precursor plasma cell disorder) has an elevated level of 2-hydroxyglutarate (2-HG) that can be used to identify the precursor plasma cell disorder as likely to progress to a PC cancer (e.g., multiple myeloma) are provided. Materials and methods for treating a mammal having a precursor PC disorder at high risk of progressing to a PC cancer also are provided.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: May 4, 2021
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Wilson I. Gonsalves, Shaji Kumar, K. Sreekumaran Nair, Vijay Ramakrishnan
  • Publication number: 20210116276
    Abstract: Near-Infrared (NIR) filter photometry is used to calculate component concentrations in multiphase flows. The disclosed methodology adapts the Beer-Lambert law for nonhomogeneous immiscible mixtures (such as oil and water) by modeling the fluid layer as a nonhomogeneous distribution of its components and deriving a mathematical relationship between measured absorbances, component path lengths, and non-homogeneity factors. The methodology is integrated into a multi-channel filter photometer to measure phase concentrations in oil-and-gas pipelines. The system is proven more accurate than current state of the art based on data from simulations, multiphase flow laboratories and field trials.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 22, 2021
    Inventors: Vijay Ramakrishnan, John Lievois
  • Publication number: 20200395103
    Abstract: Disclosed herein are methods of performing clinical trials. Also disclosed herein are methods of obtaining payments for a medicament. Also disclosed herein are systems and devices for selecting a medicament for a subject.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 17, 2020
    Inventors: Vijay RAMAKRISHNAN, Edwin P. CHING
  • Publication number: 20200027445
    Abstract: Systems, methods, and computer-readable media for correcting transcriptions created through automatic speech recognition. A transcription of speech created using an automatic speech recognition system can be received. One or more domain-specific contexts associated with the speech can be identified and a text span that includes a mistranscribed entry can be recognized from the speech based on the one or more domain-specific contexts. Additionally, features can be extracted from the mistranscribed entry and the extracted features can be matched against an index of domain-specific entries to identify a correct entry of the mistranscribed entry. Subsequently, the transcription can be corrected by replacing with the mistranscribed entry with the correct entry.
    Type: Application
    Filed: January 29, 2019
    Publication date: January 23, 2020
    Inventors: Karthik Raghunathan, Arushi Raghuvanshi, Vijay Ramakrishnan Thimmaiyah, Lucien Serapio Carroll, Varsha Ravikumar Embar
  • Publication number: 20190378597
    Abstract: The present disclosure provides methods, processes, reagents and kits for novel healthcare delivery, treatment and payment, particularly for achieving better economic outcomes in patients treated with specialty drugs. Methods, processes, and kits provide a number of uses, including, for providing assurance, both efficacy and financial, theragnostic-guidance, for providing therapeutic appropriateness, therapeutic guidance, therapeutic effectiveness, and selection of alternative therapeutic strategies, and providing product differentiation and presumably market enrichment for a specialty drug, for authorizing payment and delivering the drug directly from a pharmaceutical company to a patient or her specialty physician through a novel healthcare delivery platform. Medical records and databases using these strategies are also provided.
    Type: Application
    Filed: November 23, 2016
    Publication date: December 12, 2019
    Inventor: Vijay Ramakrishnan
  • Publication number: 20180275132
    Abstract: This document relates to materials and methods in assessing and treating mammals (e.g., humans) with precursor plasma cell (PC) disorders. Materials and methods for determining if a mammal (e.g., a mammal having a precursor plasma cell disorder) has an elevated level of 2-hydroxyglutarate (2-HG) that can be used to identify the precursor plasma cell disorder as likely to progress to a PC cancer (e.g., multiple myeloma) are provided. Materials and methods for treating a mammal having a precursor PC disorder at high risk of progressing to a PC cancer also are provided.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 27, 2018
    Applicant: Mayo Foundation for Medical Education and Research
    Inventors: Wilson I. Gonsalves, Shaji Kumar, K. Sreekumaran Nair, Vijay Ramakrishnan