Patents by Inventor Marcos Moises Lederman

Marcos Moises Lederman 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).

  • Write head for improved manufacturability larger write field and reduced adjacent track erasure
    Patent number: 7349179
    Abstract: A magnetic write head provides a significant write field and minimal adjacent track erasure, and lends itself to improved manufacturability. The write head includes a pedestal throat height that defines a bottom pole, P1, and that is substantially recessed from the air bearing surface. The write head further includes a top pole, P2, that defines a nose that is closer to the air bearing surface than the pedestal zero throat. This design achieves a relatively high ratio of the off-track to on-track field. As an example, a 1:4 ratio could be achieved to significantly mitigate the erasure problem of the adjacent tracks resulting from magnetic flux saturation.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: March 25, 2008
    Assignee: Western Digital (Fremont), LLC
    Inventors: Qing He, David John Seagle, Loi Dac Pham, Marcos Moises Lederman