Patents by Inventor Arthur J. Freeman

Arthur J. Freeman 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).

  • Magnetic recording head with high saturation magnetization write pole having alternating interface-defining Fe/Co layers
    Patent number: 6795273
    Abstract: A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: September 21, 2004
    Assignee: Quantum Materials Design, Inc.
    Inventors: Michael K. Minor, Timothy J. Klemmer, Michael A. Seigler, Arthur J. Freeman
  • Magnetic recording head with multilayer, high moment structure
    Publication number: 20030133224
    Abstract: A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 17, 2003
    Inventors: Michael K. Minor, Timothy J. Klemmer, Michael A. Seigler, Arthur J. Freeman