Patents by Inventor Krishnakumar Mani

Krishnakumar Mani 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: 20220318474
    Abstract: Provided herein is a cell of a magnetic random access memory (MRAM) circuit. The cell includes a horizontal outer perimeter and an access transistor including a first terminal, a second terminal, and a gate terminal. The cell includes a magnetic tunnel junction (MTJ) structure located in the horizontal outer perimeter and above the bottom electrode. The MTJ structure being centered within the horizontal outer perimeter. The cell includes a bottom electrode located entirely within the horizontal outer perimeter. The bottom electrode comprising a shape enabling the MTJ structure to be centered within the horizontal outer perimeter.
    Type: Application
    Filed: June 17, 2022
    Publication date: October 6, 2022
    Applicant: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 11366949
    Abstract: Embodiments of the present invention disclose an MRAM cell layout for 32 nm, 45 nm, and 65 nm CMOS process technology.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: June 21, 2022
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Publication number: 20220104316
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whole field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator.
    Type: Application
    Filed: October 1, 2021
    Publication date: March 31, 2022
    Applicant: III Holdings 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 11166348
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whole field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: November 2, 2021
    Assignee: III Holdings 1, LLC
    Inventor: Krishnakumar Mani
  • Publication number: 20210014940
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whole field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator.
    Type: Application
    Filed: August 10, 2020
    Publication date: January 14, 2021
    Inventor: Krishnakumar Mani
  • Patent number: 10779363
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whole field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: September 15, 2020
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Publication number: 20200243760
    Abstract: Embodiments of the invention disclose magnetic memory cell configurations in which a magnetic storage structure is coupled to an upper metal layer with minimal overlay margin. This greatly reduces a size of the memory cell.
    Type: Application
    Filed: March 23, 2020
    Publication date: July 30, 2020
    Inventor: Krishnakumar Mani
  • Publication number: 20200226315
    Abstract: Embodiments of the present invention disclose an MRAM cell layout for 32 nm, 45 nm, and 65 nm CMOS process technology.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventor: Krishnakumar Mani
  • Patent number: 10608171
    Abstract: Embodiments of the invention disclose magnetic memory cell configurations in which a magnetic storage structure is coupled to an upper metal layer with minimal overlay margin. This greatly reduces a size of the memory cell.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: March 31, 2020
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 10606973
    Abstract: Embodiments of the present invention disclose an MRAM cell layout for 32 nm, 45 nm, and 65 nm CMOS process technology.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: March 31, 2020
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 10043969
    Abstract: Disclosed is a memory circuit and method of forming the same. The memory circuit comprises a lower metallization layer defining first conducting lines. A continuous magnetic storage element stack is atop the lower metallization layer wherein a bottom electrode of the stack is in direct contact with the first conducting lines. An upper metallization layer is atop the continuous magnetic storage element stack, the upper metallization layer defining second conducting lines, which are in direct contact with said continuous magnetic storage element stack. Localized areas of the continuous magnetic storage element stack define discrete magnetic bits, each energizable through a selected pair of the first and second conducting lines. In a second aspect and a third aspect, the continuous magnetic storage element stack is respectively partially and fully etched through a single mask, to define the discrete magnetic bits.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: August 7, 2018
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 9997697
    Abstract: In one embodiment, there is provided a non-volatile magnetic memory cell. The non-volatile magnetic memory cell comprises a switchable magnetic element; and a word line and a bit line to energize the switchable magnetic element; wherein at least one of the word line and the bit line comprises a magnetic sidewall that is discontinuous.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: June 12, 2018
    Assignee: III Holdings 1, LLC
    Inventor: Krishnakumar Mani
  • Publication number: 20170290103
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whole field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 5, 2017
    Inventor: Krishnakumar Mani
  • Patent number: 9761633
    Abstract: A method for fabricating a magnetic film structure is provided. The method comprises forming a magnetic structure on a bottom electrode layer, the magnetic structure comprising at least one pinned bottom magnetic film layer having a fixed magnetic orientation; at least one top magnetic film layer whose magnetic orientation can be manipulated by a current; and a tunneling layer between the bottom magnetic film layer and the top magnetic film layer; forming a metallic hard mask atop the magnetic structure; patterning and etching the metallic hard mask to define exposed areas of the magnetic structure; selectively etching the exposed areas of the magnetic structure by a chemical etch process based on a CO etch chemistry to form discrete magnetic bits.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: September 12, 2017
    Assignee: III HOLDINGS 1, LLC
    Inventors: Krishnakumar Mani, Benjamin Chen
  • Publication number: 20170222129
    Abstract: In one embodiment, there is provided a non-volatile magnetic memory cell. The non-volatile magnetic memory cell comprises a switchable magnetic element; and a word line and a bit line to energize the switchable magnetic element; wherein at least one of the word line and the bit line comprises a magnetic sidewall that is discontinuous.
    Type: Application
    Filed: March 21, 2017
    Publication date: August 3, 2017
    Inventor: Krishnakumar Mani
  • Patent number: 9713203
    Abstract: In one embodiment of the invention, there is provided a tool for annealing a magnetic stack. The tool includes a housing defining a heating chamber; a holding mechanism to hold at least one wafer in a single line within the heating chamber, a heating mechanism to heat the at least one wafer; and a magnetic field generator to generate a magnetic field whose field lines pass through the single line of wafers during a magnetic annealing process; wherein the holding mechanism comprises a wafer support of holding the single line of wafers between the heating mechanism and the magnetic field generator. The tool may be a rapid thermal processor retrofitted with the magnetic field generator.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 18, 2017
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 9680087
    Abstract: In one embodiment of the invention, there is provided a method for manufacturing a magnetic memory device, comprising: depositing a carbon layer comprising amorphous carbon on a substrate; annealing the carbon layer to activate dopants contained therein; and selectively etching portions of the carbon layer to forms lines of spaced apart carbon conductors.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: June 13, 2017
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Patent number: 9620411
    Abstract: In one embodiment, there is provided a non-volatile magnetic memory cell. The non-volatile magnetic memory cell comprises a switchable magnetic element; and a word line and a bit line to energize the switchable magnetic element; wherein at least one of the word line and the bit line comprises a magnetic sidewall that is discontinuous.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 11, 2017
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani
  • Publication number: 20160351796
    Abstract: In one embodiment of the invention, there is provided a method for manufacturing a magnetic memory device, comprising: depositing a carbon layer comprising amorphous carbon on a substrate; annealing the carbon layer to activate dopants contained therein; and selectively etching portions of the carbon layer to forms lines of spaced apart carbon conductors.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventor: Krishnakumar Mani
  • Patent number: 9496017
    Abstract: Memory cell comprising two conductors, with a serially connected magnetic storage element and a Schottky diode between the two conductors. The Schottky diode provides a unidirectional conductive path between the two conductors and through the element. The Schottky diode is formed between a metal layer in one of the two conductors and a processed junction layer. Methods for process and for operation of the memory cell are also disclosed. The memory cell using the Schottky diode can be designed for high speed operation and with high density of integration. Advantageously, the junction layer can also be used as a hard mask for defining the individual magnetic storage element in the memory cell. The memory cell is particularly useful for magnetic random access memory (MRAM) circuits.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: November 15, 2016
    Assignee: III HOLDINGS 1, LLC
    Inventor: Krishnakumar Mani