Patents by Inventor Negar Karimi

Negar Karimi 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 for fabricating a pole tip in a magnetic transducer using feed-forward and feedback
    Patent number: 7254884
    Abstract: Methods for fabricating pole piece tips for a magnetic transducer are disclosed. The ion-milling operations for trimming P2 and notching P1 are controlled using feed-forward and feedback. The preferred method of the invention includes steps for setting four time values used in different phases of the ion-milling process based on feed-forward and feedback of measured values including the P2 width measured in the mask, multiple P2B measurements and measurement of the notch depth.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: August 14, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Negar Karimi, John I. Kim, Andrew Crehan Walker, Yeak-Chong Wong
  • Method for fabricating a pole tip in a magnetic transducer using feed-forward and feedback
    Publication number: 20060059680
    Abstract: Methods for fabricating pole piece tips for a magnetic transducer are disclosed. The ion-milling operations for trimming P2 and notching P1 are controlled using feed-forward and feedback. The preferred method of the invention includes steps for setting four time values used in different phases of the ion-milling process based on feed-forward and feedback of measured values including the P2 width measured in the mask, multiple P2B measurements and measurement of the notch depth.
    Type: Application
    Filed: September 20, 2004
    Publication date: March 23, 2006
    Inventors: Negar Karimi, John Kim, Andrew Walker, Yeak-Chong Wong