Patents by Inventor Vivek Singhal

Vivek Singhal 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: 11947887
    Abstract: A system includes a memory that stores instructions and receives a circuit netlist, and includes a processing unit that accesses the memory and executes the instructions. The instructions include an EDA application that includes a test-point flop allocation module that is configured to evaluate the circuit netlist to determine compatibility of the test-point nodes in the circuit netlist. The test-point flop allocation module can further allocate each of the test-point flops to a test-point sharing group comprising a plurality of compatible test-point nodes. The EDA application also includes a circuit layout module configured to generate a circuit layout associated with the circuit design, the circuit layout comprising the functional logic and scan-chains comprising the test-point flops allocated to the test-point sharing groups in response to the circuit netlist. The circuit layout is employable to fabricate an integrated circuit (IC) chip.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: April 2, 2024
    Assignee: Cadence Design Systems, Inc.
    Inventors: Krishna Chakravadhanula, Brian Foutz, Prateek Kumar Rai, Sarthak Singhal, Christos Papameletis, Vivek Chickermane
  • Publication number: 20230382738
    Abstract: The embodiments herein provide a facile four-step process for the preparation of binder-free graphene felts that are free standing and mechanically robust. The step of deagglomeration of graphene material leads to a uniform size distribution which when combined/integrated with an appropriate moulding technique allows an easy fine tuning of various attributes of graphene felts including electrical conductivity, porosity, surface area, surface morphology and surface functionalization depending on the desired application. Since graphene felts obtained from this process do not incorporate any binder, to achieve better electrical conductivity, electrochemical activity and catalytic and sensing properties compared to conventional graphene felts while not compromising with their mechanical properties.
    Type: Application
    Filed: August 10, 2023
    Publication date: November 30, 2023
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, KUNAL PAUL, ARVIND BHARDWAJ, SYED SHAJAR ALI IMAM, HEMANT CHARAYA
  • Publication number: 20230361298
    Abstract: The various embodiments of the present invention provide a method of fabricating carbon felt based electrodes without any binder additive. A coating of conductive polymer adhesives is applied on the current collector. The carbon felts are placed on either side of the current collector to get an assembly. The assembly comprising current collector and carbon felt is placed between the plates of hot press with predetermined conditions for curing the adhesive applied on the surface of current collector and to obtain sandwich structure of electrode. The sandwich structure of electrode is subjected under a roller and pressed depending on required thickness and porosity of the electrodes. The electrodes are cut into desired shape using electrode cutting die in tailoring process. The prepared carbon felt based electrode illustrates high flexibility and mechanical robustness when compared to carbon felt electrodes that are binder based and brittle in nature.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 9, 2023
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, KUNAL PAUL, ARVIND BHARDWAJ, SYED SHAJAR ALI MAM, HEMANT CHARAYA
  • Publication number: 20230335834
    Abstract: The embodiments of the present invention provide a system for optimizing a performance of metal-air fuel cells. The system includes the metal-air fuel cells comprising a plurality of stacks of metal-air fuel cell units. The plurality of stacks of metal-air fuel cell units are designed to be connected in at least one of a series configuration and a parallel configuration. Each metal-air fuel cell unit comprises at least one metal anode sheet placed between at least two cathodes sheets. One or more cathode electrodes (111) are held together with one of an epoxy and a silicone based elastomer adhesive. The at least one metal anode sheet and the at least two cathode sheets are included in a shell apparatus.
    Type: Application
    Filed: September 4, 2021
    Publication date: October 19, 2023
    Inventors: AKSHAY VIVEK SINGHAL, PRITHVI KADADARAVALLI BASAVARAJU, ANKUSH RAINA, HEMANT CHARAYA
  • Patent number: 11760637
    Abstract: The embodiments herein provide a facile four-step process for the preparation of binder-free graphene felts that are free standing and mechanically robust. The step of deagglomeration of graphene material leads to a uniform size distribution which when combined/integrated with an appropriate moulding technique allows an easy fine tuning of various attributes of graphene felts including electrical conductivity, porosity, surface area, surface morphology and surface functionalization depending on the desired application. Since graphene felts obtained from this process do not incorporate any binder, to achieve better electrical conductivity, electrochemical activity and catalytic and sensing properties compared to conventional graphene felts while not compromising with their mechanical properties.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: September 19, 2023
    Assignee: LOG 9 MATERIALS SCIENTIFIC PRIVATE LIMITED
    Inventors: Akshay Vivek Singhal, Anshul Kumar Sharma, Kunal Paul, Arvind Bhardwaj, Syed Shajar Ali Imam, Hemant Charaya
  • Publication number: 20230212015
    Abstract: The embodiments herein provide a system and a method for the synthesis of Graphene Quantum Dots (GQDs) for use in applications like nano-electronics, photonics, bio-imaging, energy storage, quantum computing, etc. Cu substrate is placed inside the CVD tube, and the CVD Chamber is sealed. The process parameters for CVD process are set up. Precursor gases injected inside the tube are dissociated to form carbon dimers and trimmers. Upon cooling semi-crystalline carbon film deposits inside the CVD tube. Oxidizing gas mixture is injected to convert amorphous C in semi-crystalline carbon film to CO2/CO. Graphene Quantum Dots (GQDs) so formed are carried with the gas flow and deposited at the cooler end of tube. The scrapper assembly is inserted in the CVD Tube and the reagent is sprayed inside the tube to disperse these GQDs in the reagent. This dispersion is pumped out of the CVD Chamber.
    Type: Application
    Filed: December 23, 2022
    Publication date: July 6, 2023
    Inventors: Akshay Vivek SINGHAL, Anshul Kumar SHARMA
  • Patent number: 11629984
    Abstract: An x-ray mass flow rate sensor uses a low density polymer pipe, an x-ray source, and an x-ray detector. The polymer pipe has a low density (less than 2.8 SG) and a high pressure rating (greater than 5 ksi). By using a low density polymer pipe, the sensor is able to use an x-ray source that does not require a linear accelerator and is less than or equal to 450 kV. The x-ray source and the x-ray detector are mounted on opposite sides of the polymer pipe to form a detection area that passes through the polymer pipe. A real-time calibration of the sensor is performed by detecting gray level values in a calibration region of the detection area for two reference materials placed in the detection area. The sensor may additionally include a mechanical flow rate sensor with a plurality of pistons with springs of varying spring constants.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: April 18, 2023
    Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Vivek Singhal, Eric Van Oort, Pradeepkumar Ashok
  • Patent number: 11560314
    Abstract: The embodiments herein provide a system and a method for the synthesis of Graphene Quantum Dots (GQDs) for use in applications like nano-electronics, photonics, bio-imaging, energy storage, quantum computing, etc. Cu substrate is placed inside the CVD tube, and the CVD Chamber is sealed. The process parameters for CVD process are set up. Precursor gases injected inside the tube are dissociate to form carbon dimers and trimmers. Upon cooling semi-cyrstalline carbon film deposits inside the CVD tube. Oxidizing gas mixture is injected to convert amorphous C in semi-cyrstalline carbon film to CO2/CO. Graphene Quantum Dots (GQDs) so formed are carried with the gas flow and deposited at the cooler end of tube. The scrapper assembly is inserted in the CVD Tube and the reagent is sprayed inside the tube to disperse these GQDs in the reagent. This dispersion is pumped out of the CVD Chamber.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 24, 2023
    Assignee: LOG 9 MATERIALS SCIENTIFIC PRIVATE LIMITED
    Inventors: Akshay Vivek Singhal, Anshul Kumar Sharma
  • Publication number: 20220190408
    Abstract: The embodiments herein disclose a power backup system comprising a graphene-based metal-air battery (GMAB), and at least one auxiliary power source as a secondary and additional back-up. The GMAB comprises an electrolyte reservoir for storing electrolyte; a pump for pumping the electrolyte to a plurality of cells; a filter, coupled to the pump, for entrapping aluminum oxide particles generated by electrolyte flow through the cells, to free the electrolyte from any metal oxide particle impurities; at least one rotameter coupled to the pump; at least one settling tank to remove metal oxide particles from the electrolyte; at least one buffer tank to replenish the electrolyte to a desired composition; and a mechanical refuelling unit for mechanical retraction of consumed aluminum and insertion of a plurality of fresh aluminum cassettes into the cells simultaneously.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 16, 2022
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, ANKUSH RAINA, HEMANT CHARAYA, ANUJ JAIN
  • Publication number: 20220153139
    Abstract: A system for extending a range of an electric vehicle includes a graphene-based metal-air battery system (GMABS), an electrolyte management system (EMS), a flow management system (FMS), one or more auxiliary power sources, and a real-time monitoring and feedback system (RMS). The GMABS includes multiple cells electrically connected to each other and filled with an electrolyte for initiating a reaction to generate power. The EMS regulates a temperature of the electrolyte flowing through the cells. The FMS regulates a circulation of the electrolyte in the GMABS. At least one auxiliary power source is connected to the GMABS to receive and deliver the power to components of the electric vehicle. The RMS continuously computes and monitors a state of charge of each auxiliary power source in real time to facilitate a continuous power delivery to the electric vehicle, thereby extending the range of the electric vehicle.
    Type: Application
    Filed: December 16, 2019
    Publication date: May 19, 2022
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, ANUJ JAIN, ANKUSH RAINA, HEMANT CHARAYA
  • Publication number: 20220073354
    Abstract: The embodiments herein provide a facile four-step process for the preparation of binder-free graphene felts that are free standing and mechanically robust. The step of deagglomeration of graphene material leads to a uniform size distribution which when combined/integrated with an appropriate moulding technique allows an easy fine tuning of various attributes of graphene felts including electrical conductivity, porosity, surface area, surface morphology and surface functionalization depending on the desired application. Since graphene felts obtained from this process do not incorporate any binder, to achieve better electrical conductivity, electrochemical activity and catalytic and sensing properties compared to conventional graphene felts while not compromising with their mechanical properties.
    Type: Application
    Filed: November 15, 2019
    Publication date: March 10, 2022
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, KUNAL PAUL, ARVIND BHARDWAJ, SYED SHAJAR ALI IMAN, HEMANT CHARAYA
  • Publication number: 20210362124
    Abstract: The embodiments herein provide a filter for cigarette comprising graphene nano-composite based material enclosed in a casing. The filter is reusable and is plugged to any cigarette, or tobacco smoking products. The filter is a stand-alone product or manufactured integrally with each individual cigarette. The filter provides a safe smoking option to tobacco smokers without changing their smoking habits by reducing the tar content and other toxic chemicals in the inhaled smoke. The graphene based nanocomposite filter adsorbs the toxic agents from the smoke of cigarette, beedi, hookah. The filter is fabricated by treating ceramic particles and coating them with carbon particles. The carbon particles are carbonized. The ceramic particles coated with carbon are segregated based on shape and size and treated chemically to convert carbon into graphene under inert conditions. The graphene coated particles are chemically functionalized for improved filtration.
    Type: Application
    Filed: July 1, 2021
    Publication date: November 25, 2021
    Inventor: AKSHAY VIVEK SINGHAL
  • Patent number: 11083216
    Abstract: The embodiments herein provide a filter for cigarette comprising graphene nano-composite based material enclosed in a casing. The filter is reusable and is plugged to any cigarette, or tobacco smoking products. The filter is a stand-alone product or manufactured integrally with each individual cigarette. The filter provides a safe smoking option to tobacco smokers without changing their smoking habits by reducing the tar content and other toxic chemicals in the inhaled smoke. The graphene based nanocomposite filter adsorbs the toxic agents from the smoke (of cigarette, beedi, hookah etc). The filter is fabricated by treating ceramic particles and coating them with carbon particles. The carbon particles are carbonized. The ceramic particles coated with carbon are segregated based on shape and size and treated chemically to convert carbon into graphene under inert conditions. The graphene coated particles are chemically functionalized for improved filtration.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: August 10, 2021
    Assignee: LOG 9 MATERIALS SCIENTIFIC PRIVATE LIMITED
    Inventors: Akshay Vivek Singhal, Purnendu
  • Publication number: 20210228763
    Abstract: The embodiments herein provide a system and a method for synthesizing graphene-supported photocatalytic nanomaterials for air purification. The method includes synthesizing a ceramic substrate from a ceramic material in particulate form; depositing carbon material on the synthesized ceramic substrate; depositing one photocatalytic nanomaterial on the carbonaceous material coated ceramic substrate; transforming the phase of the ceramic substrate coated with carbonaceous photocatalytic nanomaterial in inert atmospheric condition from one phase to another phase; and activating the transformed ceramic substrate coated with carbonaceous photocatalytic nanomaterial, when exposed to photo energy source.
    Type: Application
    Filed: July 9, 2019
    Publication date: July 29, 2021
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, KUNAL PAUL, SYED SHAJAR ALI IMAM
  • Publication number: 20210230001
    Abstract: The embodiments herein provide method and system for synthesizing graphene and a plurality of derivatives through a mechanical shearing process. The method comprises synthesizing a ceramic substrate from a ceramic material in particulate form; depositing carbon material on the synthesized ceramic substrate to synthesize graphene ceramic substrate coated with carbonaceous material; dissolving/dispersing the graphene ceramic substrate coated with carbonaceous material in one solvent and perform mechanical shearing to obtain a dispersion solution of graphene and its derivatives. This graphene dispersions is further subjected to ultrasonication to obtain graphene nano-platelets. The embodiments also provide mechanical exfoliation method for the bulk synthesis of doped and functionalized graphene nano-platelets. The doped graphene ceramic composite are subjected to exfoliation with or without simultaneous ultra-sonication for obtaining doped graphene sheet.
    Type: Application
    Filed: July 9, 2019
    Publication date: July 29, 2021
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA, AYUSHI KAUSHIK
  • Publication number: 20210033442
    Abstract: An x-ray mass flow rate sensor uses a low density polymer pipe, an x-ray source, and an x-ray detector. The polymer pipe has a low density (less than 2.8 SG) and a high pressure rating (greater than 5 ksi). By using a low density polymer pipe, the sensor is able to use an x-ray source that does not require a linear accelerator and is less than or equal to 450 kV. The x-ray source and the x-ray detector are mounted on opposite sides of the polymer pipe to form a detection area that passes through the polymer pipe. A real-time calibration of the sensor is performed by detecting gray level values in a calibration region of the detection area for two reference materials placed in the detection area. The sensor may additionally include a mechanical flow rate sensor with a plurality of pistons with springs of varying spring constants.
    Type: Application
    Filed: April 5, 2019
    Publication date: February 4, 2021
    Inventors: Vivek SINGHAL, Eric VAN OORT, Pradeepkumar ASHOK
  • Publication number: 20200339425
    Abstract: The embodiments herein provide a system and a method for the synthesis of Graphene Quantum Dots (GQDs) for use in applications like nano-electronics, photonics, bio-imaging, energy storage, quantum computing, etc. Cu substrate is placed inside the CVD tube, and the CVD Chamber is sealed. The process parameters for CVD process are set up. Precursor gases injected inside the tube are dissociate to form carbon dimers and trimmers. Upon cooling semi-cyrstalline carbon film deposits inside the CVD tube. Oxidizing gas mixture is injected to convert amorphous C in semi-cyrstalline carbon film to CO2/CO. Graphene Quantum Dots (GQDs) so formed are carried with the gas flow and deposited at the cooler end of tube. The scrapper assembly is inserted in the CVD Tube and the reagent is sprayed inside the tube to disperse these GQDs in the reagent. This dispersion is pumped out of the CVD Chamber.
    Type: Application
    Filed: December 27, 2018
    Publication date: October 29, 2020
    Inventors: AKSHAY VIVEK SINGHAL, ANSHUL KUMAR SHARMA
  • Publication number: 20190161412
    Abstract: The embodiments herein provide a filter for cigarette comprising graphene nano-composite based material enclosed in a casing. The filter is reusable and is plugged to any cigarette, or tobacco smoking products. The filter is a stand-alone product or manufactured integrally with each individual cigarette. The filter provides a safe smoking option to tobacco smokers without changing their smoking habits by reducing the tar content and other toxic chemicals in the inhaled smoke. The graphene based nanocomposite filter adsorbs the toxic agents from the smoke (of cigarette, beedi, hookah etc). The filter is fabricated by treating ceramic particles and coating them with carbon particles. The carbon particles are carbonized. The ceramic particles coated with carbon are segregated based on shape and size and treated chemically to convert carbon into graphene under inert conditions. The graphene coated particles are chemically functionalized for improved filtration.
    Type: Application
    Filed: April 27, 2017
    Publication date: May 30, 2019
    Inventors: AKSHAY VIVEK SINGHAL, PURNENDU
  • Patent number: 9970987
    Abstract: An embodiment provides a circuit for testing an integrated circuit. The circuit includes an input converter that receives N scan inputs and generates M pseudo scan inputs, where M and N are integers. A scan compression architecture is coupled to the input converter and generates P pseudo scan outputs in response to the M pseudo scan inputs. An output converter is coupled to the scan compression architecture and generates Q scan outputs in response to the P pseudo scan outputs, wherein P and Q are integers. The input converter receives the N scan inputs at a first frequency and generates the M pseudo scan inputs at a second frequency and the output converter receives the P pseudo scan outputs at the second frequency and generates the Q scan outputs at the first frequency.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 15, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sreenath Narayanan Potty, Rajesh Mittal, Mudasir Shafat Kawoosa, Vivek Singhal
  • Patent number: 9705481
    Abstract: An integrated circuit device having a p-well plane, a plurality of substantially parallel n-well rows, and a logic cell. The p-well plane is comprised of p-type semiconductor material. Each n-well row comprises an n-type layer disposed on the surface of the p-well plane. The plurality of n-well rows includes a first n-well row and a second n-well row. The logic cell is arranged on the p-well plane and the footprint of the logic cell encompasses both the first and second n-well rows.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: July 11, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sudesh Chandra Srivastava, Vivek Singhal