Patents by Inventor Karthikeyan Kumaresan

Karthikeyan Kumaresan 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: 20240106011
    Abstract: Described are pre-lithiated anode active materials, lithium-ion electrochemical cells comprising pre-lithiated anode active materials, methods for preparing pre-lithiated anode active materials, and lithium-ion electrochemical cells comprising pre-lithiated anode active materials. The disclosed processes are useful for adapting various methods for manufacturing for lithium-ion electrochemical cells with modifications to achieve pre-lithiation. The pre-lithiation process used by some embodiments described herein include treating an incomplete lithium-ion cell structure with a lithiation redox agent prior to injecting electrolyte into the cell, using techniques similar to the electrolyte injection process.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 28, 2024
    Applicant: Apple Inc.
    Inventors: Jian Hong, Shabab Amiruddin, Karthikeyan Kumaresan
  • Patent number: 9559348
    Abstract: Electrochemical cells having desirable electronic and ionic conductivities, and associated systems and methods, are generally described.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: January 31, 2017
    Assignee: Sion Power Corporation
    Inventors: Karthikeyan Kumaresan, Yuriy V. Mikhaylik
  • Patent number: 9531009
    Abstract: Electrochemical cells having desirable electronic and ionic conductivities, and associated systems and methods, are generally described.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: December 27, 2016
    Assignee: Sion Power Corporation
    Inventors: Karthikeyan Kumaresan, Christopher T. S. Campbell, Bala Sankaran
  • Publication number: 20140193713
    Abstract: Electrochemical cells having desirable electronic and ionic conductivities, and associated systems and methods, are generally described.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 10, 2014
    Applicant: Sion Power Corporation
    Inventors: Karthikeyan Kumaresan, Christopher T.S. Campbell, Bala Sankaran
  • Publication number: 20140193723
    Abstract: Electrochemical cells having desirable electronic and ionic conductivities, and associated systems and methods, are generally described.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 10, 2014
    Applicant: Sion Power Corporation
    Inventors: Karthikeyan Kumaresan, Yuriy V. Mikhaylik
  • Publication number: 20120070746
    Abstract: Electrochemical cells including components and configurations for electrochemical cells, such as rechargeable lithium batteries, are provided. The electrochemical cells described herein may include a combination of components arranged in certain configurations that work together to increase performance of the electrochemical cell. In some embodiments, such combinations of components and configurations described herein may minimize defects, inefficiencies, or other drawbacks that might otherwise exist inherently in prior electrochemical cells, or that might exist inherently in prior electrochemical cells using the same or similar materials as those described herein, but arranged differently.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 22, 2012
    Applicant: Sion Power Corporation
    Inventors: Yuriy V. Mikhaylik, Karthikeyan Kumaresan, John D. Affinito
  • Publication number: 20100239914
    Abstract: The present invention relates to cathodes used in electrochemical cells. A force, or forces, applied to portions of an electrochemical cell as described in this application can reduce irregularity or roughening of an electrode surface of the cell, improving performance. The cathodes described herein may possess enhanced properties that render them particularly suitable for use in electrochemical cells designed to be charged and/or discharged while a force is applied. In some embodiments, the cathode retains sufficient porosity to charge and discharge effectively when a force is applied to the cell. Cathodes described herein may also comprise relatively high electrolyte-accessible conductive material (e.g., carbon) areas. The cathode may comprise a relatively low ratio of the amount of binder and/or mass of electrolyte to cathode active material (e.g., sulfur) ratio in some instances.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 23, 2010
    Applicant: Sion Power Corporation
    Inventors: Yuriy V. Mikhaylik, Karthikeyan Kumaresan