Patents Assigned to MagSil Corporation
  • Patent number: 7894252
    Abstract: A magnetic memory cell in which a sensor is magnetically coupled to a magnetic media wherein the separation of the magnetic media from the sensor permits each to be magnetically optimized separate from the other, thus improving defect tolerance and minimizing the magnetic influence of neighboring cells in an array on one another. In an embodiment, the read circuitry is positioned so that no read current passes through the media during a read operation. In an alternative embodiment, processing is simplified but the read current is allowed to pass through the media.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: February 22, 2011
    Assignee: MagSil Corporation
    Inventor: Krishnakumar Mani
  • Publication number: 20110032755
    Abstract: Disclosed is a current driving mechanism for a magnetic memory device, comprising: a) a current driver circuit; and b) a current decoding block coupled to the current driver circuit, wherein the current decoding block comprises a transistor M18 to control driver currents from the current driver circuit, and wherein the transistor M18 has a smaller form factor then otherwise possible by virtue of maintaining a gate thereof at a negative voltage.
    Type: Application
    Filed: August 6, 2010
    Publication date: February 10, 2011
    Applicant: MAGSIL CORPORATION
    Inventors: Krishnakumar Mani, Anil Gupta
  • Patent number: 7830704
    Abstract: Embodiments of the invention provide compact magnetic random access memory cell, comprising a word line; a bit line comprising a slot formed therein; a magnetic storage element disposed between the word line and the bit line; an access transistor located below the bit line and aligned with the slot therein; and a conductor passing through the slot in the bit line electrically connect the magnetic storage element to the access transistor.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: November 9, 2010
    Assignee: Magsil Corporation
    Inventor: Krishnakumar Mani
  • Patent number: 7796421
    Abstract: In one embodiment, there is provided a method for programming a memory device having magnetoresistive memory elements as storage elements. The method is performed during fabrication of the memory device and may be used to realize a Magnetic Read Only Memory (MROM) device. In accordance with the method, during fabrication of a memory device comprising a plurality of magnetoresistive memory elements (MRME) e.g. a MTJs, the memory device is programmed by selectively controlling the presence or absence of the magnetoresistive element at each intersection of a word line (WL) and a bit line (BL) in the device.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: September 14, 2010
    Assignee: MagSil Corporation
    Inventor: Krishnakumar Mani
  • Patent number: 7787289
    Abstract: Embodiments of the present invention disclose an MRAM device having a plurality of magnetic memory cells grouped into words, and write conductors for carrying write currents to write to the memory cells, wherein at least some of the write conductors have a reduced cross-sectional area in the vicinity of a group of memory cells.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: August 31, 2010
    Assignee: Magsil Corporation
    Inventors: Krishnakumar Mani, Jannier Maximo Roiz Wilson, Anil Gupta, Kimihiro Satoh
  • Publication number: 20100208514
    Abstract: A magnetic memory cell in which a sensor is magnetically coupled to a magnetic media wherein the separation of the magnetic media from the sensor permits each to be magnetically optimized separate from the other, thus improving defect tolerance and minimizing the magnetic influence of neighboring cells in an array on one another. In an embodiment, the read circuitry is positioned so that no read current passes through the media during a read operation. In an alternative embodiment, processing is simplified but the read current is allowed to pass through the media.
    Type: Application
    Filed: January 19, 2010
    Publication date: August 19, 2010
    Applicant: MAGSIL CORPORATION
    Inventor: Krishnakumar Mani
  • Patent number: 7649765
    Abstract: A magnetic memory cell in which a sensor is magnetically coupled to a magnetic media wherein the separation of the magnetic media from the sensor permits each to be magnetically optimized separate from the other, thus improving defect tolerance and minimizing the magnetic influence of neighboring cells in an array on one another. In an embodiment, the read circuitry is positioned so that no read current passes through the media during a read operation. In an alternative embodiment, processing is simplified but the read current is allowed to pass through the media.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: January 19, 2010
    Assignee: Magsil Corporation
    Inventor: Krishnakumar Mani
  • Publication number: 20080212364
    Abstract: A magnetic memory cell in which a sensor is magnetically coupled to a magnetic media wherein the separation of the magnetic media from the sensor permits each to be magnetically optimized separate from the other, thus improving defect tolerance and minimizing the magnetic influence of neighboring cells in an array on one another. In an embodiment, the read circuitry is positioned so that no read current passes through the media during a read operation. In an alternative embodiment, processing is simplified but the read current is allowed to pass through the media.
    Type: Application
    Filed: December 26, 2007
    Publication date: September 4, 2008
    Applicant: MagSil Corporation
    Inventor: Krishnakumar Mani
  • Patent number: 7394683
    Abstract: A solid state magnetic memory system and method disposes an array of magnetic media cells in an array on a substrate. In an exemplary embodiment, drive electronics are fabricated into the substrate through conventional CMOS processing in alignment with associated cells of the array. The magnetic media cells each include a magnetic media bit and a magnetoresistive or GMR stack for reading the state of the media bit. Addressing lines are juxtaposed with the media bits to permit programming and erasing of selected ones of the bits. In at least some embodiments, sector erase may be performed.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: July 1, 2008
    Assignee: MagSil Corporation, Inc.
    Inventors: Santosh Kumar, Subodh Kumar, Divyanshu Verma, Krishnakumar Mani
  • Patent number: 7239570
    Abstract: Disclosed herein are a magnetic memory device and method for storing and retrieving data. The magnetic memory device includes a read disk and a storage disk. The read disk comprises of an array of read heads wherein the individual read head corresponds to a storage element on the storage disk.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: July 3, 2007
    Assignee: MagSil Corporation
    Inventors: Santosh Kumar, Subodh Kumar, Divyanshu Verma
  • Publication number: 20070140000
    Abstract: Disclosed herein are different embodiments of a magnetic memory cell. This magnetic memory cell includes at least two conductive lines to carry current and a magnetic element disposed between the conductive lines. The current through the conductive lines induces a magnetic field. The design is such that the magnetic element is directly accessible.
    Type: Application
    Filed: January 31, 2007
    Publication date: June 21, 2007
    Applicant: MagSil Corporation
    Inventor: Krish Mani
  • Patent number: 7173847
    Abstract: A horizontally disposed elliptical or rectangular magnetic memory cell includes at least two conductive lines to carry current and a magnetic element disposed between the conductive lines. The current through the conductive lines induces a magnetic field, such that the magntic element is directly accessible. The magnetic memory cell can be sensed with a GMR head.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: February 6, 2007
    Assignee: MagSil Corporation
    Inventor: Krish Mani