Patents Assigned to Indian Institute of Technology Madras
  • Patent number: 11605429
    Abstract: Present disclosure relates to a method and a system for searching through a Ternary Content Addressable Memory (TCAM). The system comprises a Digital Light Processing System (DLP) receiving an input query. The DLP comprises a 2-Dimensional array of digital micro mirrors configured for reflecting light from one or more input sources in the TCAM to a predefined position. The system further comprises a detection screen having a detection area. The detection area is configured for generating an image of a resultant pixel according to the reflection of the light, wherein the resultant pixel corresponds to a search result for an input query.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: March 14, 2023
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Ganesh Chennimalai Sankaran, Krishnamoorthy Sivalingam, Balaji Srinivasan
  • Patent number: 11573151
    Abstract: Embodiments herein provide a system (100) to estimate the amplitude of oscillations in a turbulent flow system (102) that exhibits oscillatory instabilities. The system (100) comprises of a sensor (102A) mounted on the turbulent flow system (102) to detect an oscillatory variable in the system obtaining a signal, a signal conditioner (104) that conditions the signal from the sensor, an amplitude estimator (110) that estimates the amplitude of the limit cycle oscillations, and also predict the proximity of the system to the oscillatory instability, a processor (108) connected to the amplitude estimator (110) to compare the predicted oscillation amplitude with a threshold value. The amplitude is estimated by estimating the spectral measure of the time series signal obtained from the system.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: February 7, 2023
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IITM)
    Inventors: Induja Pavithran, Vishnu Rajasekharan Unni, Alan John Varghese, Praveen Kasthuri, Raman Pillai Indusekharan Nair Sujith
  • Publication number: 20230018319
    Abstract: A staggered magnet array (SMA) based electromagnetic acoustic transducer (EMAT) system and method for controlling the direction of the ultrasonic waves in the electromagnetic acoustic transducer (EMAT) using staggered magnet array (SMA) configurations, is disclosed herein. The EMAT device proposed herein comprises at least one conductive racetrack coil and at least two magnet arrays wherein the magnet array comprises of permanent magnets, where each magnet is oriented according to a specific configuration to produce ultrasonic waves in order to form an ultrasonic beam by shifting the position of the magnet arrays up or down creating a SMA configuration.
    Type: Application
    Filed: November 6, 2020
    Publication date: January 19, 2023
    Applicant: Indian Institute of Technology Madras (IIT Madras)
    Inventors: Krishnan Balasubramanian, Siddharth Shankar
  • Patent number: 11553496
    Abstract: Accordingly embodiments herein achieve signaling method and system (2000) for provisioning signalling in an Integrated Access Backhaul (IAB) network (1000). The method includes providing a set of modifications in uplink and downlink signaling for an IAB node (100). The modifications either help to reduce the control channel payload or enable more flexible signaling of resources, improve efficient control channel scheduling and also avoid conflicts that might arise due to discrepancies between semi static and dynamic resource allocation.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: January 10, 2023
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY, INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Pardhasarathy Jyothi, Deepak Padmanabhan Maya, Chandrasekaran Mohandoss, Thirunageswaram Ramachandran Ramya, Klutto Milleth Jeniston Deviraj, Bhaskar Ramamurthi
  • Patent number: 11536520
    Abstract: The present invention relates to a method of enhancing heat transfer of metallic surfaces by (1) fabricating hierarchical micro-nanostructured surfaces using etching processes, and (2) fabricating hydrophobic and hydrophilic regions, using a printing or a coating technique, followed by etching. The said method enhances the density of condensation sites over a metallic surface and additionally facilitates the departure of condensed droplets from the surface. Such a surface also enhances the sensible heat transfer characteristics, and improves the coefficient of performance (COP) of refrigeration systems for applications like atmospheric water generators, dehumidifiers, air conditioners, etc.
    Type: Grant
    Filed: February 2, 2019
    Date of Patent: December 27, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Pradeep Thalappil, Ankit Nagar, Ramesh Kumar, Srikrishnarka Pillalamarri
  • Patent number: 11523429
    Abstract: Embodiments herein provide a method and system for managing Grant-free data transmission in a radio communication network. The proposed method includes composing, by a Base Station (BS), a Select Signal (SS) for a transceiver device, where the SS is configured to control a grant-free data transmission from the transceiver device. Further, the proposed method includes transmitting, by the BS, the SS to the transceiver device. Further, the proposed method includes receiving, by a transceiver device, the SS from the BS. Further, the proposed method includes decoding, by the transceiver device, the SS and furthermore, the proposed method includes controlling, by the transceiver device, a data transmission by one of activating the grant-free data transmission from the transceiver device in response to successful decoding of the SS, and deactivating the grant-free data transmission from the transceiver device in response to unsuccessful decoding of the SS.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: December 6, 2022
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY CEWIT, INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Nithin Srinivasan, Dhivagar Baskaran, Chandrasekaran Mohandoss, Sunil Kaimalettu, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Publication number: 20220354366
    Abstract: The present invention relates to a method for estimating lung morphometry based on aerosol deposition characteristics using an imaging means such as a gamma camera to scan the lungs. An adaptive image threshold technique is used to determine the ratio of deposition in central to peripheral region of the lung (C/P ratio). The morphometric parameters such as length and diameter of distal lung airways (P8 and P9 respectively) and mean alveolar diameter (dalv) are determined from aerosol retention data and clearance data.
    Type: Application
    Filed: October 13, 2020
    Publication date: November 10, 2022
    Applicants: Indian Institute of Technology Madras, Sri Venkateswara Institute of Medical Sciences (SVIMS)
    Inventors: Mahesh V Panchagnula, Karthiga Devi S G, Mohan Alladi
  • Publication number: 20220355298
    Abstract: A microfluidic analyser and a method of using the same is disclosed. The microfluidic analyser comprising a droplet generator, an analyte flow channel in fluid communication with said droplet generator at a first end, wherein said flow channel is configured to allow the droplets to flow in from the first end and exit from a second opposing end, said flow channel receiving at least one illumination channel positioned at a predetermined location between the first and the second end to excite contents of the droplets and said flow channel further comprising a plurality of receiving channels set at predetermined angles to an axis of the flow channel to interrogate at least one optical signal from the illuminated droplet traversing the flow channel and wherein said receiving channels terminate in a signal detector at the distal end away from the flow channel.
    Type: Application
    Filed: July 3, 2020
    Publication date: November 10, 2022
    Applicants: CENTRE FOR CELLULAR AND MOLECULAR PLATFORMS, INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Taslimarif SAIYED, Preksha GUPTA, Anil PRABHAKAR, Ambili MOHAN
  • Patent number: 11471854
    Abstract: The process of reacting nanoscale ce-MoS2 nanosheets anchored on oxide support with lead in solution at room temperature whereby the reaction is rapid and spontaneous resulting in the formation of PbMoO4-xSx in the process of scavenging Pb2+ and Pb4+ present in the solution.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 18, 2022
    Assignee: Indian Institute of Technology Madras (IIT Madras)
    Inventors: Thalappil Pradeep, Biswajit Mondal, Ananthu Mahendranath, Anirban Som, Sandeep Bose, Tripti Ahuja, Avula Anil Kumar, Jyotirmoy Ghosh
  • Patent number: 11460638
    Abstract: A fused fibre coupler comprising: a single mode fibre, SMF, and an orbital angular momentum fibre, OAMF, the fibres having a coupling portion in which the fibres are longitudinally aligned side by side and fused at least over a coupling length in which the SMF and OAMF are tapered such that the diameter of the SMF and the diameter of the OAMF give the fibres matching effective refractive indices for a single mode of the SMF and an orbital angular momentum, OAM, mode of the OAMF for a coupled wavelength of light.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: October 4, 2022
    Assignees: UNIVERSITY OF SOUTHAMPTON, INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Shankar Pidishety, Balaji Srinivasan, Gilberto Brambilla
  • Patent number: 11454394
    Abstract: A system for early detection of onset of oscillatory instabilities in practical devices is described. The system consists of a measuring device (102), an instability detection unit (104) and a control unit (106). The measuring device (102) is configured to generate signals corresponding to the dynamics happening inside the practical device. The instability detection unit (104) along with an amplitude estimation unit (130) is configured to diagnose the stability of the practical device from the signals that are generated by the measuring device (102). Further, the control unit (106) is configured to control various operating parameters in the practical device based on the information obtained from the instability detection unit (104).
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: September 27, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Induja Pavithran, Vishnu Rajasekharan Unni, Raman Pillai Indusekharan Nair Sujith
  • Patent number: 11448073
    Abstract: Accordingly, embodiments herein disclose a system (500) for controlling admission volume of an inlet gas for fixed RPM operation of in an apparatus. The system (500) has a boiler (502) for generating a steam at a higher pressure for heating application in a process. A pressure reducing valve (PRV) (504) controls a boiler pressure to process pressure. Inlet ports and exhaust ports are configured by intersection of opening on a rotor housing (614) and opening on a rotating valve. Inlet ports are configured so that a port opening duration can be controlled to admit required volume of a steam corresponding to a mass flow requirement of the process. A port capable of changing the area and timing of opening in such a way that the duration and starting of exhaust can be controlled.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: September 20, 2022
    Assignee: Indian Institute of Technology, Madras (IIT Madras)
    Inventors: Vipin Venugopal, Satyanarayanan Seshadri
  • Patent number: 11411665
    Abstract: The method includes configuring a first CLI-RS configuration at a first UE (200a). Further, the method includes configuring a second CLI-RS configuration at a second UE (200b). Further, the method includes generating a CLI-RS sequence using a common CLI-RS reference point known to the first UE (200a) and the second UE (200b). Further, the method includes filling the CLI-RS sequence in the first set of CLI-RS resources indicated in the first CLI-RS configuration. Further, the method includes transmitting the CLI-RS sequence filled in the first set of CLI-RS resources indicated in the first CLI-RS configuration to the second UE (200b). Further, the method includes receiving the CLI-RS sequence transmitted by the first UE (200a). Further, the method includes processing the received CLI-RS sequence based on the second CLI-RS configuration.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: August 9, 2022
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY, INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Abhijeet Abhimanyu Masal, Priyanka Dey, Sunil Kaimalettu, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Publication number: 20220227671
    Abstract: An improved method for preparing porous mullite ceramic from Pickering emulsions stabilised by hetero-aggregate of oppositely charged fumed oxide particles. The method uses oppositely charged fumed oxide nano-particles (silica and alumina) to stabilize oil-in-water Pickering emulsions wherein the stabilized Pickering emulsions can be used as a template for preparing porous mullite material. An optimised Pickering emulsion template that is stabilised with fumed oxide nano-particles (silica and alumina) is used to produce a green body that is transformed into solid porous material with a controlled porosity and pore size by sintering.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 21, 2022
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Nithin M, Manas MUKHERJEE, Basavaraj M GURAPPA
  • Patent number: 11378488
    Abstract: A system and method for optimizing passive control strategies of oscillatory instabilities in turbulent systems using finite-time Lyapunov exponents are disclosed. The method includes receiving data from one or more measuring devices connected to the turbulent flow system incorporating a control strategy in the flow field. One or more flow characteristics are determined from the data obtained from the measuring devices. The method involves computing critical dynamics from backward time finite-time Lyapunov exponent (FTLE) field based on the one or more flow characteristics. Next, one or more regions of critical dynamics associated with impending oscillatory instabilities in the turbulent flow system are identified. The identified region of critical dynamics is disrupted the control the onset of oscillatory instabilities in the turbulent flow system.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 5, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT Madras)
    Inventors: Premchand Chandramouly Premakumari, Vineeth Nair, Sujith Raman Pillai Indusekharan Nair, Nitin Babu George, Manikandan Raghunathan, Vishnu Rajasekharan Unni
  • Patent number: 11374705
    Abstract: Embodiments herein provides a method and apparatus for data communication in an OFDM system. The method comprising receiving by a second OFDM apparatus a plurality of parameters, a signal comprising data and at least one of a Reference Signal (RS) and a message from a first OFDM apparatus. The plurality of parameters comprises at least one of a numerology of the first apparatus, a numerology of the second apparatus, a ratio of numerology of the first apparatus to the second apparatus and a measurement window. The method includes filtering a desired band comprising the at least one of the RS and the message from the received signal, removing a cyclic prefix from the filtered signal, and decoding at least one of the RS and the message from the signal with adjusting a circular shift in the set of symbols based on the plurality of parameters.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: June 28, 2022
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY, INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Abhijeet Abhimanyu Masal, Priyanka Dey, Sunil Kaimalettu, Dhivagar Baskaran, Paka Venkata Sriharsha, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Patent number: 11368350
    Abstract: Accordingly, embodiments herein disclose a method for signal synchronization in orthogonal frequency-division multiplexing (OFDM) based Narrow Band-Internet of Thing (NB-IoT) system. The method includes generating a New Radio-Narrowband Primary Synchronization Signal (NR-NPSS). Further, the method includes mapping each Zadoff-chu sequence of 14 Zadoff-chu sequences of the NR-NPSS to resource elements of each OFDM symbol of 14 OFDM symbols in an NR-NPSS subframe.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: June 21, 2022
    Assignees: CENTRE OF EXCELLENCE IN WIRELESS TECHNOLOGY, INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IITMADRAS)
    Inventors: Budama Sree Charan Teja Reddy, Sunil Kaimalettu, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Patent number: 11351508
    Abstract: The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS2 NSs at the liquid-air interface resulting in Ag2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H2O2, under visible light, which causes efficient disinfection of water. The holey MoS2 NSs shows 105 times higher efficiency in disinfection compared to normal MoS2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 7, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS)
    Inventors: Pradeep Thalappil, Depanjan Sarkar, Anirban Som, Biswajit Mondal, Swathy Jakka Ravindran
  • Patent number: 11349548
    Abstract: Accordingly, the embodiment provides a method for detecting a beam failure event by a Base Station (BS) (100) in a wireless network (1000). The method includes transmitting at least one of a resource scheduling configuration and a reference signal configuration to at least one first User Equipment (UE) (300a) in the wireless network (1000). Further, the method includes determining whether at least one response is received from the first UE (300a). Further, the method includes detecting a beam failure event associated with at least one beam from the plurality of beams of the first UE (300a) in response to determining that the at least one response is not received from the first UE (300a).
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: May 31, 2022
    Assignees: Center of Excellence in Wireless Technology, Indian Institute of Technology Madras
    Inventors: Chandrasekaran Mohandoss, Thirunageswaram Ramachandran Ramya, Jeniston Deviraj Klutto Milleth, Bhaskar Ramamurthi
  • Publication number: 20220162932
    Abstract: A fracking device (100) for generating shock waves in a well bore (102) comprises a fracking gun (110). The fracking gun (110) includes a cartridge (200) having a hollow cavity and a cylinder (202) disposed inside the hollow cavity of the cartridge (200). The cylinder (202) has a first chamber (210) and a second chamber (212). The first chamber (210) includes a plurality of explosive charges (206) positioned on an inner surface of the cylinder (202), wherein each of the explosive charges (206) contains an explosive mixture comprising hydrogen and stoichiometric oxygen in a predetermined ratio. The second chamber (212) contains a combustion-neutral gas. The first chamber (210) is separated from the second chamber (212) by a diaphragm (214).
    Type: Application
    Filed: January 17, 2020
    Publication date: May 26, 2022
    Applicant: Indian Institute of Technology, Madras
    Inventor: Rajesh Ravi Nair