Patents by Inventor William W. French

William W. French 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).

  • Multitrack magnetic head employing double helix structure
    Patent number: 4316227
    Abstract: A multitrack magnetic head is made from an electrically conductive first helix formed on an iron wire that is, in turn, wound to form a second helix. By cutting or lapping a longitudinal flat along one side of the second helix, the first helix is severed into respective discrete coil-wound gapped cores.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: February 16, 1982
    Assignee: Eastman Technology, Inc.
    Inventors: James U. Lemke, William W. French
  • Multitrack magnetic head employing double helix structure
    Patent number: 4314298
    Abstract: A multitrack magnetic head is made from an electrically conductive first helix formed on an iron wire that is, in turn, wound to form a second helix. By longitudinally cutting along one side of the second helix, the first helix is severed into respective coils on discrete gapped cores.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: February 2, 1982
    Assignee: Eastman Technology, Inc.
    Inventors: William W. French, James U. Lemke, Richard J. McClure