Patents by Inventor Jim Watterston

Jim Watterston 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).

  • Method of fabricating thin film write heads with a shortened yoke and improved dimension control
    Patent number: 7386933
    Abstract: A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between coil elements and adjacent trench walls and covemg the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: June 17, 2008
    Assignee: Western Digital (Fremont), LLC
    Inventors: Mohamad T. Krounbi, Ming Zhao, Yining Hu, Jim Watterston
  • Thin film recording head with a buried coil providing a shortened yoke and improved dimension control
    Patent number: 7006327
    Abstract: A writer for magnetic recording heads. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover the sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between the coil elements and adjacent the trench walls and covering the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: February 28, 2006
    Assignee: Western Digital (Fremont), Inc.
    Inventors: Mohamad T. Krounbi, Ming Zhao, Yining Hu, Jim Watterston
  • Thin film recording head with a buried coil providing a shortened yoke and improved dimension control
    Publication number: 20040169958
    Abstract: A writer for magnetic recording heads. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer including front and back tips with spaced apart walls positioned adjacent the trench bottom defining trench sides. A pole cover layer is included that is made up of a thin layer of insulating material deposited to cover the sides and bottom of the coil trench. A bottom coil is formed on the pole cover layer in the bottom of the coil trench and coil insulation is provided between the coil elements and adjacent the trench walls and coverng the coil. A top coil with insulation is formed over the planarized bottom coil insulation and the top pole second layer is formed over the top coil.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 2, 2004
    Inventors: Mohamad T. Krounbi, Ming Zhao, Yining Hu, Jim Watterston