Patents by Inventor Brad J. Howard

Brad J. Howard 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: 7507672
    Abstract: A system and a process for plasma etching a semiconductor device. The technique comprises periodically applying a heightened voltage bias during the plasma etching process so as to reduce accumulated charge on the surface of the semiconductor device during plasma etching of the device. In one embodiment, a heightened positive voltage and heightened negative voltage is applied to the semiconductor device while plasma etching is occurring to thereby induce charge to be removed from the semiconductor device.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: March 24, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Mirzafer K. Abatchev, Brad J. Howard, Kevin G. Donohoe
  • Patent number: 7211849
    Abstract: A method of forming a magnetic random access memory (MRAM) using a sacrificial cap layer on top of the memory cells and the structure resulting therefrom are described. A plurality of individual magnetic memory devices with cap layers are fabricated on a substrate. A continuous first insulator layer is deposited over the substrate and the magnetic memory devices. Portions of the first insulator layer are removed at least over the magnetic memory devices and then the cap layers are selectively removed from the magnetic memory devices, thus exposing active top surfaces of the magnetic memory devices. The top surfaces of the magnetic memory devices are recessed below the top surface of the first insulator layer. Top conductors are formed in contact with the active top surfaces of the magnetic memory devices. In an illustrated embodiment, spacers are also formed along the sides of the magnetic memory devices before the first insulator layer is deposited.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: May 1, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Max Hineman, Karen Signorini, Brad J. Howard
  • Patent number: 7112533
    Abstract: A system and a process for plasma etching a semiconductor device. The technique comprises periodically applying a heightened voltage bias during the plasma etching process so as to reduce accumulated charge on the surface of the semiconductor device during plasma etching of the device. In one embodiment, a heightened positive voltage and heightened negative voltage is applied to the semiconductor device while plasma etching is occurring to thereby induce charge to be removed from the semiconductor device.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: September 26, 2006
    Assignee: Micron Technology, Inc.
    Inventors: Mirzafer K. Abatchev, Brad J. Howard, Kevin G. Donohoe
  • Publication number: 20040264240
    Abstract: A method of forming a magnetic random access memory (MRAM) using a sacrificial cap layer on top of the memory cells and the structure resulting therefrom are described. A plurality of individual magnetic memory devices with cap layers are fabricated on a substrate. A continuous first insulator layer is deposited over the substrate and the magnetic memory devices. Portions of the first insulator layer are removed at least over the magnetic memory devices and then the cap layers are selectively removed from the magnetic memory devices, thus exposing active top surfaces of the magnetic memory devices. The top surfaces of the magnetic memory devices are recessed below the top surface of the first insulator layer. Top conductors are formed in contact with the active top surfaces of the magnetic memory devices. In an illustrated embodiment, spacers are also formed along the sides of the magnetic memory devices before the first insulator layer is deposited.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 30, 2004
    Inventors: Max Hineman, Karen Signorini, Brad J. Howard
  • Patent number: 6783995
    Abstract: A method of forming a magnetic random access memory (MRAM) using a sacrificial cap layer on top of the memory cells and the structure resulting therefrom are described. A plurality of individual magnetic memory devices with cap layers are fabricated on a substrate. A continuous first insulator layer is deposited over the substrate and the magnetic memory devices. Portions of the first insulator layer are removed at least over the magnetic memory devices and then the cap layers are selectively removed from the magnetic memory devices, thus exposing active top surfaces of the magnetic memory devices. The top surfaces of the magnetic memory devices are recessed below the top surface of the first insulator layer. Top conductors are formed in contact with the active top surfaces of the magnetic memory devices. In an illustrated embodiment, spacers are also formed along the sides of the magnetic memory devices before the first insulator layer is deposited.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: August 31, 2004
    Assignee: Micron Technology, Inc.
    Inventors: Max Hineman, Karen Signorini, Brad J. Howard
  • Publication number: 20030203510
    Abstract: A method of forming a magnetic random access memory (MRAM) using a sacrificial cap layer on top of the memory cells and the structure resulting therefrom are described. A plurality of individual magnetic memory devices with cap layers are fabricated on a substrate. A continuous first insulator layer is deposited over the substrate and the magnetic memory devices. Portions of the first insulator layer are removed at least over the magnetic memory devices and then the cap layers are selectively removed from the magnetic memory devices, thus exposing active top surfaces of the magnetic memory devices. The top surfaces of the magnetic memory devices are recessed below the top surface of the first insulator layer. Top conductors are formed in contact with the active top surfaces of the magnetic memory devices. In an illustrated embodiment, spacers are also formed along the sides of the magnetic memory devices before the first insulator layer is deposited.
    Type: Application
    Filed: April 30, 2002
    Publication date: October 30, 2003
    Inventors: Max Hineman, Karen Signorini, Brad J. Howard
  • Publication number: 20030024643
    Abstract: A system and a process for plasma etching a semiconductor device. The technique comprises periodically applying a heightened voltage bias during the plasma etching process so as to reduce accumulated charge on the surface of the semiconductor device during plasma etching of the device. In one embodiment, a heightened positive voltage and heightened negative voltage is applied to the semiconductor device while plasma etching is occurring to thereby induce charge to be removed from the semiconductor device.
    Type: Application
    Filed: October 1, 2002
    Publication date: February 6, 2003
    Inventors: Mirzafer K. Abatchev, Brad J. Howard, Kevin G. Donohoe