Patents by Inventor Mari Kondoh

Mari Kondoh 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 head containing a barrier layer
    Patent number: 5038242
    Abstract: A Metal-In-Gap head is disclosed. A barrier layer of iron-silicon alloy is formed on a surface of a gap side of a core, and a sendust layer is formed on the surface of the barrier layer. A gap layer of nonmagnetic material is disposed between the surface of the sendust layer and a surface of another core.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: August 6, 1991
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Nobuto Fukushima, Eigo Hashimoto, Junji Satoh, Mari Kondoh