Patents by Inventor Rajlakshmi PURKAYASTHA

Rajlakshmi PURKAYASTHA 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).

  • Battery
    Patent number: 11450904
    Abstract: The present disclosure relates to a battery comprising a housing defining an electrochemical zone, at least one electrode that comprises a conductive substrate, wherein the substrate comprises a first region in the electrochemical zone and a second region that protrudes from the electrochemical zone, and a contact tab that is coupled to the second region, wherein the ratio of the width of the second region to the width of the contact tab is greater than 1.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 20, 2022
    Assignee: Johnson Matthey PLC
    Inventor: Rajlakshmi Purkayastha
  • Battery management system and method
    Patent number: 11394219
    Abstract: A battery management system for determining a time series of normalised voltage of at least one battery cell corresponding to a time period during which a first current flows through the at least one battery cell.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: July 19, 2022
    Assignee: OXIS ENERGY LIMITED
    Inventors: Rajlakshmi Purkayastha, Christopher Hale
  • BATTERY MANAGEMENT SYSTEM AND METHOD
    Publication number: 20210234386
    Abstract: A battery management system for determining a time series of normalised voltage of at least one battery cell corresponding to a time period during which a first current flows through the at least one battery cell.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 29, 2021
    Inventors: Rajlakshmi PURKAYASTHA, Christopher HALE
  • BATTERY
    Publication number: 20190288352
    Abstract: The present disclosure relates to a battery comprising a housing defining an electrochemical zone, at least one electrode that comprises a conductive substrate, wherein the substrate comprises a first region in the electrochemical zone and a second region that protrudes from the electrochemical zone, and a contact tab that is coupled to the second region, wherein the ratio of the width of the second region to the width of the contact tab is greater than 1.
    Type: Application
    Filed: November 11, 2017
    Publication date: September 19, 2019
    Inventor: Rajlakshmi PURKAYASTHA