Patents by Inventor Ruchirkumar Shah

Ruchirkumar Shah 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: 11790999
    Abstract: A method for erasing a memory cell includes applying a first erase to memory cells to erase the memory cells, wherein first memory cells are in a weakly erased state in response to the first erase, and wherein second memory cells are in a normally erased state in response to the first erase, thereafter applying a first weak program to the memory cells, wherein the second memory cells enter a programmed state and the third memory cells remain in the erased state in response to the first weak program, and thereafter applying a read to the memory cells to identify the second memory cells, and applying a second erase to the second memory cells to thereby erase the second memory cells.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: October 17, 2023
    Assignee: CROSSBAR, INC.
    Inventors: Jeremy Guy, Sung Hyun Jo, Hagop Nazarian, Ruchirkumar Shah, Liang Zhao
  • Publication number: 20230305699
    Abstract: One potential result of differing characteristics for certain two-terminal memory (TTM) is that memory management techniques, such as logical-to-physical (L2P), can differ as well. Previous memory management techniques do not adequately leverage the advantages associated with TTM. For example, by identifying and leveraging certain advantageous characteristics of TTM, L2P tables can be designed to be smaller and more efficient. Moreover, other memory management operations such as wear-leveling, recovery from power loss, and so forth, can be more efficient.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 28, 2023
    Inventors: Ruchirkumar Shah, Mehdi Asnaashari
  • Publication number: 20210312995
    Abstract: A method for erasing a memory cell includes applying a first erase to memory cells to erase the memory cells, wherein first memory cells are in a weakly erased state in response to the first erase, and wherein second memory cells are in a normally erased state in response to the first erase, thereafter applying a first weak program to the memory cells, wherein the second memory cells enter a programmed state and the third memory cells remain in the erased state in response to the first weak program, and thereafter applying a read to the memory cells to identify the second memory cells, and applying a second erase to the second memory cells to thereby erase the second memory cells.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 7, 2021
    Inventors: Jeremy Guy, Sung Hyun Jo, Hagop Nazarian, Ruchirkumar Shah, Liang Zhao
  • Patent number: 10998064
    Abstract: A method for erasing a memory cell includes applying a first erase to memory cells to erase the memory cells, wherein first memory cells are in a weakly erased state in response to the first erase, and wherein second memory cells are in a normally erased state in response to the first erase, thereafter applying a first weak program to the memory cells, wherein the second memory cells enter a programmed state and the third memory cells remain in the erased state in response to the first weak program, and thereafter applying a read to the memory cells to identify the second memory cells, and applying a second erase to the second memory cells to thereby erase the second memory cells.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 4, 2021
    Assignee: Crossbar, Inc.
    Inventors: Jeremy Guy, Sung Hyun Jo, Hagop Nazarian, Ruchirkumar Shah, Liang Zhao
  • Patent number: 10409714
    Abstract: One potential result of differing characteristics for certain two-terminal memory (TTM) is that memory management techniques, such as logical-to-physical (L2P), can differ as well. Previous memory management techniques do not adequately leverage the advantages associated with TTM. For example, by identifying and leveraging certain advantageous characteristics of TTM, L2P tables can be designed to be smaller and more efficient, which can allow the L2P table to be stored in memory that is faster and/or closer (or integrated into) an associated controller. Moreover, other memory management operations such as wear-leveling, recovery from power loss, and so forth, can be more efficient.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: September 10, 2019
    Assignee: Crossbar, Inc.
    Inventors: Ruchirkumar Shah, Mehdi Asnaashari
  • Publication number: 20190272882
    Abstract: A method for erasing a memory cell includes applying a first erase to memory cells to erase the memory cells, wherein first memory cells are in a weakly erased state in response to the first erase, and wherein second memory cells are in a normally erased state in response to the first erase, thereafter applying a first weak program to the memory cells, wherein the second memory cells enter a programmed state and the third memory cells remain in the erased state in response to the first weak program, and thereafter applying a read to the memory cells to identify the second memory cells, and applying a second erase to the second memory cells to thereby erase the second memory cells.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 5, 2019
    Inventors: Jeremy Guy, Sung Hyun Jo, Hagop Nazarian, Ruchirkumar Shah, Liang Xiao
  • Patent number: 10248333
    Abstract: One potential result of differing characteristics for certain two-terminal memory (TTM) is that memory management techniques, such as logical-to-physical (L2P), can differ as well. Previous memory management techniques do not adequately leverage the advantages associated with TTM. For example, by identifying and leveraging certain advantageous characteristics of TTM, L2P tables can be designed to be smaller and more efficient. Moreover, other memory management operations such as wear-leveling, recovery from power loss, and so forth, can be more efficient.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 2, 2019
    Assignee: CROSSBAR, INC.
    Inventors: Ruchirkumar Shah, Mehdi Asnaashari