Patents by Inventor Srinath Chakravarthy

Srinath Chakravarthy 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: 20230361338
    Abstract: An electrochemical cell and a method of manufacturing the electrochemical cell are provided. The method includes: spraying a precursor solution on an anode, the precursor solution including a metal salt dissolved in a solvent and the anode being at a temperature of 250° C. or greater; reacting the metal salt on the anode to form a buffer layer; and attaching a solid-state electrolyte to the buffer layer.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 9, 2023
    Inventors: Andrea Maurano, Jesse John Hinricher, So Yeon Kim, Jennifer Lilia Marguerite Rupp, Ju Li, Yuntong Zhu, Hyunwon Chu, Zachary David Hood, Won Seok Chang, Kai Pei, Yimeng Huang, Srinath Chakravarthy, Ziqiang Wang
  • Publication number: 20230253616
    Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10-2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10-6 times an ionic conductivity of the solid-state electrolyte.
    Type: Application
    Filed: April 21, 2023
    Publication date: August 10, 2023
    Inventors: Andrea Maurano, Srinath Chakravarthy, Ju Li, Ziqiang Wang, Yuming Chen, Kai Pei, Jennifer Lilia Marguerite Rupp
  • Patent number: 11664529
    Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10?2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10?6 times an ionic conductivity of the solid-state electrolyte.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: May 30, 2023
    Assignees: SAMSUNG ELECTRONICS CO., LTD., MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Andrea Maurano, Srinath Chakravarthy, Ju Li, Ziqiang Wang, Yuming Chen, Kai Pei, Jennifer Lilia Marguerite Rupp
  • Publication number: 20220052374
    Abstract: A buffered negative electrode-electrolyte assembly includes: a porous negative electrode comprising a metal, a transition metal nitride, or a combination thereof; a solid-state electrolyte; and a buffer layer between the porous negative electrode and the solid-state electrolyte. The buffer layer comprising a buffer composition according to Formula (1) MmNnZzHhXx. The buffer composition has an electronic conductivity that is less than or equal to 1×10?2 times an electronic conductivity of the solid-state electrolyte, and the buffer composition has an ionic conductivity less than or equal to 1×10?6 times an ionic conductivity of the solid-state electrolyte.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 17, 2022
    Inventors: Andrea Maurano, Srinath Chakravarthy, Ju Li, Ziqiang Wang, Yuming Chen, Kai Pei, Jennifer Lilia Marguerite Rupp
  • Publication number: 20220037649
    Abstract: A positive active material layer includes a positive active material comprising a plurality of particles having multi-modal particle size distribution, wherein the multi-modal particle size distribution comprises a first particle size distribution having a first mean particle diameter (D1) and a second particle size distribution having a second mean particle diameter (D2); a conductive agent; and a solid electrolyte comprising particles having a mean particle diameter (DSE) of 0.1 micrometers to 12 micrometers, wherein each of the first mean particle diameter and the second mean particle diameter are independently 1 micrometer to 50 micrometers.
    Type: Application
    Filed: December 9, 2020
    Publication date: February 3, 2022
    Inventors: Srinath Chakravarthy, Jeong-Ju Cho, Qingsong Tu, Tan Shi, Gerbrand Ceder
  • Patent number: 6845183
    Abstract: A co-planar waveguide interferometric electro-optic modulator is disclosed. A Z-cut lithium niobate electro-optic substrate includes a first and second waveguide that are formed in the lithium niobate electro-optic substrate. An elongate RF electrode at least partially covers one of the waveguides. A slotted electrode is disclosed formed by two elongate substantially-parallel electrodes one of which is at least partially covers the other of the waveguides. At least one electrode is substantially greater, preferably at least twice the width of the elongate RF electrode.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: January 18, 2005
    Assignee: JDS Uniphase Corporation
    Inventors: Siu Kwan Cheung, Srinath Chakravarthy, Karl Kissa
  • Publication number: 20040151414
    Abstract: A co-planar waveguide interferometric electro-optic modulator is disclosed. A Z-cut lithium niobate electro-optic substrate includes a first and second waveguide that are formed in the lithium niobate electro-optic substrate. An elongate RF electrode at least partially covers one of the waveguides. A slotted electrode is disclosed formed by two elongate substantially-parallel electrodes one of which is at least partially covers the other of the waveguides. At least one electrode is substantially greater, preferably at least twice the width of the elongate RF electrode.
    Type: Application
    Filed: November 24, 2003
    Publication date: August 5, 2004
    Applicant: JDS Uniphase Corporation
    Inventors: Siu Kwan Cheung, Srinath Chakravarthy, Karl Kissa