Patents by Inventor Varun Subramaniam Kumar

Varun Subramaniam Kumar 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: 20230365397
    Abstract: A MEMS sensor includes at least one anchor that extends into a MEMS layer and a proof mass suspended from the at least one anchor. Each anchor is coupled to the proof mass via two compliant springs that are oriented perpendicular to each other and attached to a respective anchor. The compliant springs absorb non-measured external forces such as shear forces that are applied to the sensor packaging, preventing these forces from modifying the relative location and operation of the proof mass.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 16, 2023
    Inventors: Mrigank Sharma, Varun Subramaniam Kumar, Luca Coronato, Giacomo Laghi, Matthew Julian Thompson
  • Patent number: 11761977
    Abstract: A MEMS sensor includes a central anchoring region that maintains the relative position of an attached proof mass relative to sense electrodes in the presence of undesired forces and stresses. The central anchoring region includes one or more first anchors that rigidly couple to a cover substrate and a base substrate. One or more second anchors are rigidly coupled to only the cover substrate and are connected to the one or more first anchors within the MEMS layer via an isolation spring. The proof mass in turn is connected to the one or more second anchors via one or more compliant springs.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: September 19, 2023
    Assignee: InvenSense, Inc.
    Inventors: Varun Subramaniam Kumar, Mrigank Sharma, Giacomo Laghi, Luca Coronato, Matthew Julian Thompson
  • Patent number: 11738994
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: August 29, 2023
    Assignee: InvenSense, Inc.
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Publication number: 20230107211
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 6, 2023
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Patent number: 11548780
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: January 10, 2023
    Assignee: InvenSense, Inc.
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Publication number: 20220048760
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Application
    Filed: November 1, 2021
    Publication date: February 17, 2022
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Patent number: 11186479
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: November 30, 2021
    Assignee: INVENSENSE, INC.
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Patent number: 11073531
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass and a fixed electrode. The fixed electrode is located relative to the proof mass such that a capacitance formed by the fixed electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The MEMS accelerometer is exposed to heat sources that produce a z-axis thermal gradient in MEMS accelerometer and an in-plane thermal gradient in the X-Y plane of the MEMS accelerometer. The z-axis thermal gradient is sensed with a plurality of thermistors located relative to anchoring regions of a CMOS layer of the MEMS accelerometer. The configuration of the thermistors within the CMOS layer measures the z-axis thermal gradient while rejecting other lateral thermal gradients. Compensation is performed at the accelerometer based on the z-axis thermal gradient.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: July 27, 2021
    Assignee: INVENSENSE, INC.
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Publication number: 20210053819
    Abstract: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 25, 2021
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin
  • Publication number: 20210055321
    Abstract: A microelectromechanical (MEMS) accelerometer has a proof mass and a fixed electrode. The fixed electrode is located relative to the proof mass such that a capacitance formed by the fixed electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The MEMS accelerometer is exposed to heat sources that produce a z-axis thermal gradient in MEMS accelerometer and an in-plane thermal gradient in the X-Y plane of the MEMS accelerometer. The z-axis thermal gradient is sensed with a plurality of thermistors located relative to anchoring regions of a CMOS layer of the MEMS accelerometer. The configuration of the thermistors within the CMOS layer measures the z-axis thermal gradient while rejecting other lateral thermal gradients. Compensation is performed at the accelerometer based on the z-axis thermal gradient.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 25, 2021
    Inventors: David deKoninck, Varun Subramaniam Kumar, Matthew Julian Thompson, Vadim Tsinker, Logeeswaran Veerayah Jayaraman, Sarah Nitzan, Houri Johari-Galle, Jongwoo Shin, Le Jin