Patents by Inventor Hitoshi Hatake

Hitoshi Hatake 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: 7057260
    Abstract: In the method of making a thin-film magnetic head in accordance with the present invention, an alignment mark is electrically connected to a multilayer film which will later become a TMR film. Therefore, when the alignment mark is irradiated with a position correcting electron beam in order to correct a drawing position in the subsequent step of electron beam lithography, electric charges of the electron beam flow into the multilayer film without staying in the alignment mark. As a consequence, the position correcting electron beam does not lose its straightforwardness, whereby the drawing position in electron beam lithography can be corrected accurately.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: June 6, 2006
    Assignee: TDK Corporation
    Inventors: Teruyo Kagotani, legal representative, Noriaki Kasahara, Hitoshi Hatake, Tsuneo Kagotani, deceased