Patents by Inventor Vivek R.

Vivek R. 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: 12292384
    Abstract: This disclosure describes various system and methods for monitoring photons emitted by a heat source of an additive manufacturing device. Sensor data recorded while monitoring the photons can be used to predict metallurgical, mechanical and geometrical properties of a part produced during an additive manufacturing operation. In some embodiments, a test pattern can be used to calibrate an additive manufacturing device.
    Type: Grant
    Filed: May 10, 2024
    Date of Patent: May 6, 2025
    Assignee: Divergent Technologies, Inc.
    Inventors: Vivek R. Dave, Mark J. Cola, R. Bruce Madigan, Alberto Castro, Glenn Wikle, Lars Jacquemetton, Peter Campbell
  • Publication number: 20250041976
    Abstract: This disclosure describes an additive manufacturing method that includes monitoring a temperature of a portion of a build plane during an additive manufacturing operation using a temperature sensor as a heat source passes through the portion of the build plane; detecting a peak temperature associated with one or more passes of the heat source through the portion of the build plane; determining a threshold temperature by reducing the peak temperature by a predetermined amount; identifying a time interval during which the monitored temperature exceeds the threshold temperature; identifying, using the time interval, a change in manufacturing conditions likely to result in a manufacturing defect; and changing a process parameter of the heat source in response to the change in manufacturing conditions.
    Type: Application
    Filed: October 29, 2024
    Publication date: February 6, 2025
    Applicant: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Lars Jacquemetton, Vivek R. Dave, Mark J. Cola, Glenn Wikle, R. Bruce Madigan
  • Patent number: 12172371
    Abstract: This invention teaches a quality assurance system for additive manufacturing. This invention teaches a multi-sensor, real-time quality system including sensors, affiliated hardware, and data processing algorithms that are Lagrangian-Eulerian with respect to the reference frames of its associated input measurements. The quality system for Additive Manufacturing is capable of measuring true in-process state variables associated with an additive manufacturing process, i.e., those in-process variables that define a feasible process space within which the process is deemed nominal. The in-process state variables can also be correlated to the part structure or microstructure and can then be useful in identifying particular locations within the part likely to include defects.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: December 24, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, R. Bruce Madigan, Mark J. Cola, Martin S. Piltch
  • Patent number: 12151316
    Abstract: This disclosure describes an additive manufacturing method that includes monitoring a temperature of a portion of a build plane during an additive manufacturing operation using a temperature sensor as a heat source passes through the portion of the build plane; detecting a peak temperature associated with one or more passes of the heat source through the portion of the build plane; determining a threshold temperature by reducing the peak temperature by a predetermined amount; identifying a time interval during which the monitored temperature exceeds the threshold temperature; identifying, using the time interval, a change in manufacturing conditions likely to result in a manufacturing defect; and changing a process parameter of the heat source in response to the change in manufacturing conditions.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: November 26, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Lars Jacquemetton, Vivek R. Dave, Mark J. Cola, Glenn Wikle, R. Bruce Madigan
  • Publication number: 20240367269
    Abstract: The disclosed embodiments relate to the monitoring and control of additive manufacturing. In particular, a method is shown for removing errors inherent in thermal measurement equipment so that the presence of errors in a product build operation can be identified and acted upon with greater precision. Instead of monitoring a grid of discrete locations on the build plane with a temperature sensor, the intensity, duration and in some cases position of each scan is recorded in order to characterize one or more build operations.
    Type: Application
    Filed: July 18, 2024
    Publication date: November 7, 2024
    Applicant: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, Mark J. Cola
  • Publication number: 20240326158
    Abstract: This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.
    Type: Application
    Filed: March 11, 2024
    Publication date: October 3, 2024
    Applicant: DIVERGENT TECHNOLOGIES, INC.
    Inventors: R. Bruce Madigan, Lars Jacquemetton, Glenn Wikle, Mark J. Cola, Vivek R. Dave, Darren Beckett, Alberto M. Castro
  • Publication number: 20240326326
    Abstract: This invention teaches a multi-sensor quality inference system for additive manufacturing. This invention still further teaches a quality system that is capable of discerning and addressing three quality issues: i) process anomalies, or extreme unpredictable events uncorrelated to process inputs; ii) process variations, or difference between desired process parameters and actual operating conditions; and iii) material structure and properties, or the quality of the resultant material created by the Additive Manufacturing process. This invention further teaches experimental observations of the Additive Manufacturing process made only in a Lagrangian frame of reference. This invention even further teaches the use of the gathered sensor data to evaluate and control additive manufacturing operations in real time.
    Type: Application
    Filed: February 13, 2024
    Publication date: October 3, 2024
    Applicant: Divergent Technologies, Inc.
    Inventors: Vivek R. Dave, David D. Clark, Matias Roybal, Mark J. Cola, Martin S. Piltch, R. Bruce Madigan, Alberto Castro
  • Publication number: 20240302286
    Abstract: This disclosure describes various system and methods for monitoring photons emitted by a heat source of an additive manufacturing device. Sensor data recorded while monitoring the photons can be used to predict metallurgical, mechanical and geometrical properties of a part produced during an additive manufacturing operation. In some embodiments, a test pattern can be used to calibrate an additive manufacturing device.
    Type: Application
    Filed: May 10, 2024
    Publication date: September 12, 2024
    Applicant: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, Mark J. Cola, R. Bruce Madigan, Alberto Castro, Glenn Wikle, Lars Jacquemetton, Peter Campbell
  • Patent number: 12085591
    Abstract: A multi-sensor, real-time, in-process current and voltage estimation system is disclosed including sensors, affiliated hardware, and data processing algorithms that allow accurate estimation of currents and voltages from magnetic and electric field measurements, respectively. Aspects of the system may be embodied in a detector that is readily attachable to conductors of an energized system for contactless current and/or voltage sensing of the conductors without requiring the conductors to be disconnected from the energized system.
    Type: Grant
    Filed: January 4, 2023
    Date of Patent: September 10, 2024
    Assignees: HARTING Electric Stiftung & Co. KG, The Massachusetts Institute of Technology
    Inventors: Vivek R. Dave, Felix Loske, Enger Knop, Lutz Tröger, Alan E. Casallas, Jeffrey H. Lang
  • Patent number: 12053841
    Abstract: The disclosed embodiments relate to the monitoring and control of additive manufacturing. In particular, a method is shown for removing errors inherent in thermal measurement equipment so that the presence of errors in a product build operation can be identified and acted upon with greater precision. Instead of monitoring a grid of discrete locations on the build plane with a temperature sensor, the intensity, duration and in some cases position of each scan is recorded in order to characterize one or more build operations.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: August 6, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, Mark J. Cola
  • Publication number: 20240207971
    Abstract: This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.
    Type: Application
    Filed: March 11, 2024
    Publication date: June 27, 2024
    Applicant: DIVERGENT TECHNOLOGIES, INC.
    Inventors: R. Bruce Madigan, Lars Jacquemetton, Glenn Wikle, Mark J. Cola, Vivek R. Dave, Darren Beckett, Alberto M. Castro
  • Patent number: 12019026
    Abstract: This disclosure describes various system and methods for monitoring photons emitted by a heat source of an additive manufacturing device. Sensor data recorded while monitoring the photons can be used to predict metallurgical, mechanical and geometrical properties of a part produced during an additive manufacturing operation. In some embodiments, a test pattern can be used to calibrate an additive manufacturing device.
    Type: Grant
    Filed: April 19, 2023
    Date of Patent: June 25, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, Mark J. Cola, R. Bruce Madigan, Alberto Castro, Glenn Wikle, Lars Jacquemetton, Peter Campbell
  • Patent number: 11938560
    Abstract: This disclosure describes various methods and apparatus for characterizing an additive manufacturing process. A method for characterizing the additive manufacturing process can include generating scans of an energy source across a build plane; measuring an amount of energy radiated from the build plane during each of the scans using an optical sensor; determining an area of the build plane traversed during the scans; determining a thermal energy density for the area of the build plane traversed by the scans based upon the amount of energy radiated and the area of the build plane traversed by the scans; mapping the thermal energy density to one or more location of the build plane; determining that the thermal energy density is characterized by a density outside a range of density values; and thereafter, adjusting subsequent scans of the energy source across or proximate the one or more locations of the build plane.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: March 26, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: R. Bruce Madigan, Lars Jacquemetton, Glenn Wikle, Mark J. Cola, Vivek R. Dave, Darren Beckett, Alberto M. Castro
  • Publication number: 20240092016
    Abstract: This invention teaches a quality assurance system for additive manufacturing. This invention teaches a multi-sensor, real-time quality system including sensors, affiliated hardware, and data processing algorithms that are Lagrangian-Eulerian with respect to the reference frames of its associated input measurements. The quality system for Additive Manufacturing is capable of measuring true in-process state variables associated with an additive manufacturing process, i.e., those in-process variables that define a feasible process space within which the process is deemed nominal. The in-process state variables can also be correlated to the part structure or microstructure and can then be useful in identifying particular locations within the part likely to include defects.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 21, 2024
    Applicant: Sigma Additive Solutions, Inc.
    Inventors: Vivek R. Dave, R. Bruce Madigan, MArk J. Cola, Martin S. Piltch
  • Patent number: 11931956
    Abstract: This invention teaches a multi-sensor quality inference system for additive manufacturing. This invention still further teaches a quality system that is capable of discerning and addressing three quality issues: i) process anomalies, or extreme unpredictable events uncorrelated to process inputs; ii) process variations, or difference between desired process parameters and actual operating conditions; and iii) material structure and properties, or the quality of the resultant material created by the Additive Manufacturing process. This invention further teaches experimental observations of the Additive Manufacturing process made only in a Lagrangian frame of reference. This invention even further teaches the use of the gathered sensor data to evaluate and control additive manufacturing operations in real time.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: March 19, 2024
    Assignee: DIVERGENT TECHNOLOGIES, INC.
    Inventors: Vivek R. Dave, David D. Clark, Matias Roybal, Mark J. Cola, Martin S. Piltch, R. Bruce Madigan, Alberto Castro
  • Publication number: 20240085336
    Abstract: This disclosure describes various system and methods for monitoring photons emitted by a heat source of an additive manufacturing device. Sensor data recorded while monitoring the photons can be used to predict metallurgical, mechanical and geometrical properties of a part produced during an additive manufacturing operation. In some embodiments, a test pattern can be used to calibrate an additive manufacturing device.
    Type: Application
    Filed: April 19, 2023
    Publication date: March 14, 2024
    Applicant: Sigma Additive Solutions, Inc.
    Inventors: Vivek R. Dave, Mark J. Cola, R. Bruce Madigan, Alberto Castro, Glenn Wikle, Lars Jacquemetton, Peter Campbell
  • Patent number: 11902096
    Abstract: A network device may detect an error associated with a packet based on error information being generated from processing the packet at a layer of a network stack. The network device may determine, based on detecting the error, metadata associated with the packet. The network device may generate telemetry data to include the metadata. The network device may provide the telemetry data to a network analyzer for policy enforcement.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: February 13, 2024
    Assignee: Juniper Networks, Inc.
    Inventors: Vivek R., Reji Thomas, Jimmy Jose
  • Patent number: 11864089
    Abstract: Implementations disclosed describe systems and methods that include establishing, by a wireless device, a communication link with a wireless access point (AP) device over an operating channel, the wireless AP device providing a single-band access within a first frequency band; time-multiplexing, by the wireless device, transmitting beacons or probes within a second frequency band with communicating with the wireless AP device over the operating channel within the first frequency band; and configuring the beacons or probes to advertise, to other wireless devices in the second frequency band, availability of connection to the wireless AP device over the operating channel within the first frequency band.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: January 2, 2024
    Assignee: Cypress Semiconductor Corporation
    Inventors: Vivek R. Vellore, Prashant Kota
  • Patent number: 11858207
    Abstract: This invention teaches a quality assurance system for additive manufacturing. This invention teaches a multi-sensor, real-time quality system including sensors, affiliated hardware, and data processing algorithms that are Lagrangian-Eulerian with respect to the reference frames of its associated input measurements. The quality system for Additive Manufacturing is capable of measuring true in-process state variables associated with an additive manufacturing process, i.e., those in-process variables that define a feasible process space within which the process is deemed nominal. The in-process state variables can also be correlated to the part structure or microstructure and can then be useful in identifying particular locations within the part likely to include defects.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: January 2, 2024
    Assignee: Sigma Additive Solutions, Inc.
    Inventors: Vivek R. Dave, R. Bruce Madigan, Mark J. Cola, Martin S. Piltch
  • Publication number: 20230316564
    Abstract: The present disclosure provides for devices, systems and methods for precise human head positioning in space. The present disclosure provides for control of precise human head positioning in space with use of drawing lines generated via a facial recognition computer software and positioning of sensors with permanent identification markings onto the human head according to those markings.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Inventors: Albert Y. Davydov, Vivek R. Kumar, Shivang Rakesh Trivedi